Quiz Questions

ITI Quiz - 18-Mar-2026 01:10 PM (ITISKILL6684RZ)

Q-Paper A-Paper
Question 1 1 Marks
Which space is used to design circuit in schematic editor of the Tina software?
A
Circuit work space
B
File operation space
C
Components type space
D
Components groups space
Question 2 1 Marks
Which unit is used to measure capacitance value?
A
Mho
B
Ohm
C
Farad
D
Henry
Question 3 1 Marks
Which gauge number of rosin-cored solder is suitable for soldering medium sized joints?
A
16 gauge rosin cored
B
18 gauge rosin cored
C
22 gauge rosin cored
D
24 gauge rosin cored
Question 4 1 Marks
Find the total resistance value of 10 ohms and 20 ohms connected in parallel.
A
6.666 Ohms
B
66.66 Ohms
C
666.6 Ohms
D
6666 Ohms
Question 5 1 Marks
Which energy is converted into electrical energy in hydropower stations?
A
Heat energy
B
Light energy
C
Chemical energy
D
Mechanical energy
Question 6 1 Marks
What is the important feature of instrumentation amplifier?
A
Increase the output voltage
B
Low gain accuracy
C
Low gain accuracy
D
Reduce the output off set voltage
Question 7 1 Marks
Which is the major factor determines the quality performance of A/D converter?
A
Depends on data latch
B
Measuring parameter
C
Measuring parameter
D
Conversion cycle
Question 8 1 Marks
What type of packaging is generally used to transistors utilized for low power amplification?
A
Metal packaging
B
Plastic packaging
C
Ceramic packaging
D
Plastic packaging with metal heatsinks
Question 9 1 Marks
What is the percentage of sulphuric acid in electrolyte used for lead-acid batteries?
A
12%
B
25%
C
27%
D
40%
Question 10 1 Marks
Which option opens a list of programs, currently installed in the computer?
A
Help menu
B
Start menu
C
All program
D
Recent documents
Question 11 1 Marks
Which is the package type for the JFET BFW10?
A
TO-62
B
TO-72
C
TO-82
D
TO-92
Question 12 1 Marks
Which bonding material is used for soldering a joint?
A
Oil
B
Flux
C
Acid
D
Grease
Question 13 1 Marks
How the active and passive components are added in the circuit using simulation software?
A
Clicking on the component group
B
Clicking on the list of components
C
Clicking from the similar circuit
D
Copy and paste from similar circuit
Question 14 1 Marks
Which is the output pin number IC 555 timer?
A
Pin number 6
B
Pin number 5
C
Pin number 5
D
Pin number 3
Question 15 1 Marks
How the movement of electrons through a conductor in a particular direction is called?
A
Resistance
B
Inductance
C
Conductance
D
Electric current
Question 16 1 Marks
What is the effect of electric shock at very low voltage levels (Less than 40v)?
A
Fibrillation
B
Muscles contact
C
Burning of the skin
D
Unpleasant tingling sensation
Question 17 1 Marks
What is the range of temperature used in soldering station?
A
150 Degree Centigrade to 450 Degree Centigrade
B
450 Degree Centigrade to 600 Degree Centigrade
C
600 Degree Centigrade to 800 Degree Centigrade
D
800 Degree Centigrade to 1000 Degree Centigrade
Question 18 1 Marks
Which material is used for negative terminal of alkaline manganese dioxide batteries?
A
Zinc
B
Lithium
C
Cadmium
D
Nickel hydroxide
Question 19 1 Marks
How much is the maximum load current of the negative voltage regulator IC 7912?
A
1.0 A
B
1.5 A
C
2.0 A
D
0.55 A
Question 20 1 Marks
Which semiconductor devices are composed inside the solid state relays?
A
Diodes and transistors
B
Thyristor and transistors
C
MOSFETs and IGBTs
D
UJYs and FETs
Question 21 1 Marks
What is the decimal conversion number for the octal number (2374)8?
A
(1266)10
B
(1276)10
C
(1286)10
D
(1296)10
Question 22 1 Marks
What is the additional advantage of rosin flux used for soldering electronic components?
A
It is non-conductive
B
It is good conductor
C
It is a chemical paste
D
Inorganic acid in nature
Question 23 1 Marks
Which electrode controls brightness of the image on the screen of oscilloscope?
A
Anode
B
Cathode
C
Control grid
D
Focussing electrode
Question 24 1 Marks
What type of arrangement is required to sustain the oscillations of the oscillator circuit?
A
Provide negative feedback
B
Provide regenerative feedback
C
Increase the bias voltage
D
Increase the value of inductor
Question 25 1 Marks
What is the percentage of charge accumulated by the capacitor at the end of 2 time constant limit?
A
0.4
B
0.5
C
0.632
D
0.864
Question 26 1 Marks
Which parameter is used in the working of moving coil meter?
A
Spring control
B
Stray magnetic fields
C
Eddy current damping
D
Permanent magnetic fields
Question 27 1 Marks
What is the effect of over heating on soldering a joint?
A
Cold joint
B
Poor wetting
C
Dull grainy surface
D
Flux trapped against lead
Question 28 1 Marks
Which control is used in repulsion type moving iron instrument to keep the pointer at zero position?
A
Spring control
B
Air damping control
C
Magnetic repulsion control
D
Magnetic attraction control
Question 29 1 Marks
What is the maximum power dissipation for a 555 IC?
A
Below 500 mW
B
Exactly 300 Mw
C
Exactly 300 Mw
D
Above 800 mW
Question 30 1 Marks
Which measuring instrument is used to make quick test on a TRIAC?
A
Ammeter
B
Ohmmeter
C
Voltmeter
D
Oscilloscope
Question 31 1 Marks
Which method is adopted to charge a car battery with voltage rating of 2.3 V per cell?
A
Float charging method
B
Trickle charging method
C
Constant current charging method
D
Constant voltage charging method
Question 32 1 Marks
What type of feed back is used by the Wein-bridge oscillator to oscillate the signal?
A
No feedback
B
Positive feedback
C
Negative feedback
D
Both positive and negative feedback
Question 33 1 Marks
Which electrolyte is used in maintenance free lead acid batteries?
A
Gelled electrolyte
B
Sodium electrolyte
C
Ceramic electrolyte
D
Potassium electrolyte
Question 34 1 Marks
Which type of amplifier is used to operate the loud speaker?
A
IF Amplifier
B
RF Amplifier
C
Power Amplifier
D
Voltage Amplifier
Question 35 1 Marks
Which circuits commonly use parallel-fed Hartley oscillators?
A
Stereo amplifiers
B
Radio receivers
C
Television receivers
D
Automatic voltage stabilizers
Question 36 1 Marks
How the sensitivity of voltmeter is determined?
A
FSD current
B
Meter coil resistance
C
Ohms per volt rating
D
Maximum voltage measurement
Question 37 1 Marks
Which component, which reads the command from memory and executes?
A
Processor
B
Graphics card
C
Read Only Memory
D
Random Access Memory
Question 38 1 Marks
What is the term stands for TRIAC?
A
Triode Alternate control
B
Triode DC semiconductor
C
Triode AC semiconductor
D
Triode Access console
Question 39 1 Marks
How is the soldering method used for joining large metal called?
A
Welding
B
Brazing
C
Hot soldering
D
Soft soldering
Question 40 1 Marks
What is the name of the ratio of ON-time pulse to the OFF-time pulse of multivibrator?
A
Control voltage
B
Pulse repetition
C
Pulse repetition
D
Threshold comparator
Question 41 1 Marks
What is the percentage of conductivity of electric current in copper?
A
0.56
B
0.67
C
0.94
D
1
Question 42 1 Marks
Which torque is used in PMMC meter movement?
A
Low torque
B
High torque
C
Moderate torque
D
Insufficient torque
Question 43 1 Marks
What is successive approximation (SAR)?
A
Method of IC fabrication
B
Method of D/A conversion
C
Method of D/A conversion
D
Method of SMT
Question 44 1 Marks
Which is the drain current (Id) in JFET?
A
Electron from drain to gate
B
Electron from source to drain
C
Electron from drain to source
D
Electron from gate to source
Question 45 1 Marks
What is the maximum reverse voltage that can be applied across the general purpose LED?
A
8 V
B
12 V
C
15 V
D
32 V
Question 46 1 Marks
What is the cause of injuring at the time of lifting a load?
A
Heavy load
B
Falling object
C
Object striting the load
D
Wrong lifting technique
Question 47 1 Marks
Why the solvent Iso Propyl Alcohol (IPA) is used on the solder joint?
A
To help the corrosive action
B
Cleaning before soldering the joint
C
To break down the acid within the joint
D
Remove residual flux and prevent corrosion
Question 48 1 Marks
Find the value of shunt resistance required for 1 mA meter to extend the range and measure 10 mA (RM = 27 Ohm) ?
A
1 Ohm
B
2 Ohms
C
3 Ohms
D
4 Ohms
Question 49 1 Marks
Which material is used to make photo resistors (LDR)?
A
Silicon
B
Germanium
C
Aluminium
D
Cadmium sulfide
Question 50 1 Marks
Which current flows in TRIAC between MT1 and MT2?
A
Conventional current
B
Principal current
C
Reverse current
D
Leakage current
Question 51 1 Marks
What is the effect on the transformer operated below the rated voltage?
A
Burn out windings
B
Leads to interwinding leakage
C
Transformer heated up excessively
D
Delivers reduced secondary voltage
Question 52 1 Marks
Why the transformer core is made as thin laminations?
A
To minimize eddy current losses
B
To increase the hysteresis losses
C
To maximize eddy current losses
D
To increase core saturation losses
Question 53 1 Marks
What is the load current handled by the solid state relay that must be mounted to some heatsink to protect the device?
A
Greater than 4 Amp
B
3 Amp
C
2 Amp
D
1 Amp
Question 54 1 Marks
Which condition the mechanical zero error occur in panel meters?
A
At normal condition
B
At load connected condition
C
At load connected condition
D
At voltage connected condition
Question 55 1 Marks
What is the full form of the abbreviation ISA?
A
Industry System Architecture
B
Industry Software Architecture
C
Industry Standard Architecture
D
Institution Standard Architecture
Question 56 1 Marks
Which characteristics exhibits the current conduction increases while the voltage across the devices decreases in a DIAC?
A
Linearity characteristics
B
Negative resistance characteristics
C
Positive resistance characteristics
D
Nonlinearity characteristics
Question 57 1 Marks
Which shortcut key function is used to close the working window on the computer?
A
Ctrl + S
B
Ctrl + P
C
Alt + F4
D
Shift + F3
Question 58 1 Marks
What is the name of defect if the flux is unable to remove the tarnish from the soldered joint?
A
Cold joint
B
Poor wetting
C
Pits and voids
D
Dull gravity surface
Question 59 1 Marks
Which parameter is maintained constant in zener diode?
A
Power
B
Current
C
Voltage
D
Resistance
Question 60 1 Marks
What is the switching speed of solid state relays?
A
1 to 25 nano seconds
B
10 to 60 nano seconds
C
1 to 100 nano seconds
D
1 to 100 milli seconds
Question 61 1 Marks
Which type of voltage regulator is IC 723?
A
Multipin variable voltage regulator
B
Three pin positive voltage regulator
C
Three pin negative voltage regulator
D
Three pin adjustable voltage regulator
Question 62 1 Marks
In which arrangement the high value of resistor is connected to extend the range of voltmeter?
A
Star
B
Delta
C
Series
D
Parallel
Question 63 1 Marks
What is the current rating of voltage regulator IC LM338K?
A
2A
B
3A
C
4A
D
5A
Question 64 1 Marks
What is the digital signal value for the analog signal value 6V?
A
100
B
101
C
110
D
111
Question 65 1 Marks
What are the basic components required for a clipping circuit?
A
Diode and resistor
B
Transistor and diode
C
Diode and capacitor
D
Capacitor and resistor
Question 66 1 Marks
Which IC package consist of 100 to 1000 transistors?
A
Large scale integration (LSI)
B
Small scale integration (SSI)
C
Medium scale integration (MSI)
D
Very large scale integration (VLSI)
Question 67 1 Marks
When does the rosin flux melts in a soldering process?
A
After the solder melts
B
When the solder is melting
C
During the solder is melting
D
When the solder is heated
Question 68 1 Marks
Where does the depletion region exists in a bipolar transistor?
A
Between emitter - base electrodes
B
Between collector - base electrodes
C
Between collector and emitter electrodes
D
Between E-B and B-C electrodes
Question 69 1 Marks
What is the maximum blocking voltage of very high current handling IGBT modules?
A
440 V
B
1000 V
C
5000 V
D
6000 V
Question 70 1 Marks
How many ohms is equal to one Mega ohm?
A
10 kW
B
100 kW
C
1000 kW
D
2000 kW
Question 71 1 Marks
Which metal has very good conductivity of electric current?
A
Gold
B
Silver
C
Copper
D
Aluminium
Question 72 1 Marks
What is the advantage of IGBT?
A
It has low input impedance
B
Low efficiency and slow switching
C
High efficiency and fast switching
D
IGBT is a gate current driven device
Question 73 1 Marks
What is the function of pin number 2 of IC 555 timer circuit?
A
"+VCC"
B
Trigger
C
Trigger
D
Reset
Question 74 1 Marks
What is the maximum possible number of flip-flops in a decade counter?
A
1<sup>n</sup>
B
2<sup>n</sup>
C
2<sup>n+1</sup>
D
3<sup>n</sup>
Question 75 1 Marks
What is the maximum drain- source voltage, VDS for the JFET BF 245B?
A
10 V
B
20 V
C
30 V
D
40 V
Question 76 1 Marks
When does the complementary metal oxide type MOSFET configuration consumes power?
A
While it holds its state
B
Always consumes power
C
Never consumes power
D
During switching
Question 77 1 Marks
Which device generates high frequency radio frequency indeferences by the extremely rapid turn-ON time?
A
UJT
B
TRIAC
C
Op-Amp
D
Transistor
Question 78 1 Marks
How gate is biased in JFET?
A
AC supply function
B
Forward biased
C
Reverse biased
D
Dual supply function
Question 79 1 Marks
Which energy is converted by the battery to produce electricity?
A
Electrical energy into light energy
B
Chemical energy into electrical energy
C
Mechanical energy into electrical energy
D
Electrical energy into mechanical energy
Question 80 1 Marks
Which material is used to make LDR for higher end requirements?
A
Cadmium sulfide
B
Lead selenide
C
Zinc sulfide
D
Copper sulfide
Question 81 1 Marks
Which type of wave is generated in Schmitt trigger circuit?
A
Sine wave
B
Square wave
C
Saw tooth wave
D
Triangular wave
Question 82 1 Marks
How many alternating layers are there in IGBT?
A
2 layers
B
3 layers
C
4 layers
D
Single layer
Question 83 1 Marks
Which method is used for blanketing with foam to extinguish the fire?
A
Cooling
B
Starving
C
Smothering
D
Heating
Question 84 1 Marks
What is the purpose of flux in soldering electronic circuit components?
A
Form the oxide layer
B
Reduce the solder cooling time
C
Increase the melting temperature of solder
D
Dissolve the oxide layer on the metal surface
Question 85 1 Marks
What is the gate current (Ig) of the JFET, when reverse biased?
A
Practically very low
B
Practically zero
C
Practically unity
D
Practically infinity
Question 86 1 Marks
How the thick layers of oxide is removed before doing the soldering activity?
A
Apply flux
B
Clean normally
C
Use abrasive method
D
Use Isopropyl Alcohol
Question 87 1 Marks
How many types of soldering is used for joining metal surfaces?
A
Two
B
Five
C
Four
D
Three
Question 88 1 Marks
What will happen in SCR with forward biased condition and gate current is applied?
A
Reverse current conduction commences
B
Forward current conduction stops
C
Reverse current turned off
D
Forward current conduction commences
Question 89 1 Marks
Which component is used to remove the heat generated inside the SMPS?
A
Heat sink
B
Cooler fan
C
Silicon grease
D
Mica film spacer
Question 90 1 Marks
Which rechargeable cell is designed with conductive polymer?
A
Plastic cell
B
Lead acid cell
C
Nickel metal hydride cell
D
Gelled electrolyte lead acid cell
Question 91 1 Marks
The speed of spindle motor rotates inside the hard disk
A
4000 to 800 r.p.m
B
2500 to 5000 r.p.m
C
3500 to 6000 r.p.m
D
3600 to 7200 r.p.m
Question 92 1 Marks
What is the maximum current ratings of solid state relays available in high power packages?
A
1 Amp
B
10 Amp
C
40 Amp
D
100 Amp
Question 93 1 Marks
What is the drawbacks of LDR?
A
More sensitive
B
Available different sizes and specifications
C
Cannot be used to determine precise light levels
D
Made of low resistance material with few holes
Question 94 1 Marks
What is the maximum power dissipation Pmax for BF 245B?
A
100 mw
B
200 mw
C
300 mw
D
400 mw
Question 95 1 Marks
Which circuit uses the F to V converter section?
A
Schmitt trigger circuit
B
Digital frequency meter circuit
C
Digital frequency meter circuit
D
Up/down counter circuit
Question 96 1 Marks
How the pass band gain of the circuit is expressed?
A
In volts
B
In hertz
C
In hertz
D
In ampere
Question 97 1 Marks
What is the forward voltage drop of single colour Red LED?
A
1.8 V
B
2 V
C
2.1 V
D
2.2 V
Question 98 1 Marks
Which terminal of the meter is connected for measuring electrical quantity?
A
Input terminal
B
Output terminal
C
Output terminal
D
Pointer mechanism
Question 99 1 Marks
Which electronic device inversely changes its resistance with the amount of light falling on it?
A
Photo diodes
B
Photo resistors
C
Photo transistors
D
Photo voltaic cells
Question 100 1 Marks
What is the function of astable multivibrator in timer IC 555?
A
Acting as transducers
B
Serving as an oscillator
C
Serving as an oscillator
D
Serving as comparator
Question 101 1 Marks
How to improve the frequency stability in oscillator circuits?
A
Increase the supply voltage
B
By using quartz crystal
C
Using L and C
D
Improve the property of circuits
Question 102 1 Marks
Which measuring instrument is used to check the working condition of a photo resistor (LDR)?
A
Oscilloscope
B
Voltmeter
C
Ohmmeter
D
Ammeter
Question 103 1 Marks
Which electrolyte is used in lead-acid battery?
A
Zinc chloride
B
Sulphuric acid
C
Alkaline solution
D
Potassium hydroxide solution
Question 104 1 Marks
What is the range of photo current for photo transistor BPX 38?
A
0.1MA to 1.2MA
B
0.2MA to 1.6MA
C
0.3MA to 2.7MA
D
0.4MA to 3.8MA
Question 105 1 Marks
What is the input impedance of IGBT?
A
Low input impedance
B
High input impedance
C
Medium input impedance
D
Infinity input impedence
Question 106 1 Marks
Which electrical property opposes the flow of electrons?
A
Power
B
Voltage
C
Current
D
Resistance
Question 107 1 Marks
What is the maximum forward gate current (Ig) for BFW10 JFET?
A
5 mA
B
8 mA
C
10 mA
D
20 mA
Question 108 1 Marks
What is the purpose of using IC74LS190?
A
Attemnator
B
Comparator
C
Up/down counter
D
Modulator
Question 109 1 Marks
Which insulation layer is used in MOSFET?
A
Silicon-di-oxide
B
Arsenic material
C
Antimony material
D
Germanium material
Question 110 1 Marks
What is the name of the circuit that shifts the original signal in a vertical downward direction?
A
Peak clipper circuit
B
Negative clamping circuit
C
Positive clamping circuit
D
Combination clipper circuit
Question 111 1 Marks
What is the function of clipper circuit?
A
Regulation
B
Rectification
C
Amplification
D
Wave shaping
Question 112 1 Marks
How the solid state relays are working for increased lifetime?
A
Bulky profile
B
Slower in operations
C
Spark generated during switching
D
No moving parts to wear and tear
Question 113 1 Marks
What is the full form of the abbreviation SPDT used in switches?
A
Single Phase Dual Throw
B
Single Pole Single Throw
C
Single Pole Double Throw
D
Shared Pole Double Throw
Question 114 1 Marks
Which fire extinguisher is used to put off class A type of fire?
A
Foam type
B
Jet of water
C
Dry powdered
D
Carbon-di-oxide
Question 115 1 Marks
Which circuit uses photo-darlington devices?
A
DC circuits
B
Counter circuits
C
Amplifier circuits
D
AC powered circuits
Question 116 1 Marks
What is the process of adding impurities to a pure semi conductor material?
A
Doping
B
Etching
C
Forming
D
Diffusion
Question 117 1 Marks
What type of control is used for FET?
A
Resistance controlled device
B
Voltage controlled device
C
Current controlled device
D
Frequency controlled device
Question 118 1 Marks
Why the plunger desoldering tool needs periodical cleaning?
A
To melt the solder quickly
B
To help the joint to be soldered
C
To prevent clogging of the nozzle
D
To remove the flux collected in chamber
Question 119 1 Marks
Why NPN type of transistors are preferred over the PNP type transistors?
A
NPN has lower switching speed
B
NPN has good bias stability
C
NPN has higher switching speed
D
Low operating voltage
Question 120 1 Marks
Which metal has very good conductivity to the electric current?
A
Gold
B
Copper
C
Silver
D
Aluminium
Question 121 1 Marks
What is the name of flux used for soldering electronic components?
A
Resin
B
Rosin
C
Mild acid
D
Organic acid
Question 122 1 Marks
Which material contains eight electrons in valency layer?
A
Insulators
B
Conductors
C
Semiconductors
D
Intrinsic semiconductors
Question 123 1 Marks
Which material conducts electricity?
A
Mica
B
Paper
C
Glass
D
Copper
Question 124 1 Marks
Which fire extinguisher is used to put off class C type of fire?
A
Foam type
B
Jet of water
C
Dry powdered
D
Carbon-di-oxide
Question 125 1 Marks
How the stationary electric charges are called?
A
Static charges
B
Kinetic charges
C
Chemical charges
D
Electrical charges
Question 126 1 Marks
What is the function of opto-coupler in the switching operation of digital input signal?
A
Amplifier the signal
B
Converts voltage into current
C
Produces electrical noise signal
D
Defects the operation of switching signal
Question 127 1 Marks
What is the power supply required to operate the most standard TTL ICs properly?
A
+ 1.5v to +2.5V
B
- 1.5v to - 2.5V
C
+ 4.75v to + 5.25V
D
+ 7.5v to + 12V
Question 128 1 Marks
What is the name of Multi-turn potentiometers?
A
Multi turn dual pots
B
Multi turn trim pots
C
Single turn trim pots
D
Single turn dual pots
Question 129 1 Marks
Which characteristics enable the deflection of pointer in the attraction type moving iron meter?
A
Weight of the soft iron pieces
B
Deflection is inversely proportional to current
C
Deflection is independent of current direction
D
Deflecting and controlling torques are
Question 130 1 Marks
Which formula is used to find the conductance?
A
Q / V
B
I x R
C
V / I
D
I / V
Question 131 1 Marks
How the lamp failures caused by the high inrush currents in lamp dimmer circuits using TRIAC is eliminated?
A
By the fuse
B
Using MCB
C
Using Safety resistor
D
By soft start circuit
Question 132 1 Marks
Which electrical parameter opposes the flow of electrons?
A
Power
B
Voltage
C
Current
D
Resistance
Question 133 1 Marks
What is the drawback of IGBT compared to the power MOSFET?
A
Poor switching speed
B
Poor current conduction capability
C
Higher driving power requirement
D
Not suitable for power applications
Question 134 1 Marks
Which material is used to make LDR for lower end requirements?
A
Aluminium sulfide
B
Cadmium sulfide
C
Zinc sulfide
D
Copper sulfide
Question 135 1 Marks
What is the use of schmitt trigger circuit?
A
Voltage regulator
B
AC to DC converter
C
AC to DC converter
D
Electronic thermostant
Question 136 1 Marks
How the light sensitive photo transistor enclosed inside a tight package is activated?
A
By the bias voltage to the photo transistor
B
By the external signal to the transistor
C
By IR light produced inside the package
D
By the light sensitive receiver inside
Question 137 1 Marks
Which component filter the ripples in the rectifier circuit?
A
DIAC
B
Diode
C
TRIAC
D
Capacitor
Question 138 1 Marks
What is the gate current (Ig) of the JFET, when reverse biased?
A
Practically very low
B
Practically zero
C
Practically unity
D
Practically infinity
Question 139 1 Marks
What is the purpose of covering provided over the electrical conductor?
A
Increase current flow
B
Reduce current flow
C
Decrease voltage rating
D
Protection against weather
Question 140 1 Marks
Which device is a unipolar transistor?
A
UJT
B
FET
C
BJT
D
IGBT
Question 141 1 Marks
Which tool is used to measure the size of wire?
A
Try square
B
Steel rule
C
Feeler gauge
D
Standard wire gauge
Question 142 1 Marks
Why the soft iron pieces in the moving iron meter is tongue shaped?
A
To generate heat
B
To damp the oscillations
C
To achieve uniformity of scale
D
To produce magnetic attraction
Question 143 1 Marks
What in the current gain of a common ? base amplifier?
A
Unity
B
Infinity
C
Greater than 1
D
Less than 1
Question 144 1 Marks
What is the minimum current ratings of solid state relays available in low power packages?
A
Few micro Amperes
B
10 milli Ampere
C
50 milli Ampere
D
100 milli Ampere
Question 145 1 Marks
What is produced by the power supply connected soldering iron?
A
Fire
B
Heat
C
Cool air
D
Water vapour
Question 146 1 Marks
What is the relation of wire diameter with current carrying capacity of conductor?
A
Wire gets less heat
B
Directly proportional
C
Inversely proportional
D
Drops more voltage across it
Question 147 1 Marks
Which battery is made from non-toxic materials?
A
Lithium ion (Li-Ion)
B
Lithium polymer (Li-Poly)
C
Nickel cadmium (Nicad)
D
Nickel metal hydride (NiMH)
Question 148 1 Marks
Which signal is sent by the SMPS to computer mother board?
A
Device signal
B
Peripheral signal
C
Processor signal
D
Power good signal
Question 149 1 Marks
6 What is the input impedance of IGBT?
A
Low
B
High
C
Unity
D
Infinity
Question 150 1 Marks
What is the output produced in the ADC circuit?
A
Analog output
B
Triangular wave output
C
Triangular wave output
D
Sinewave output
Question 151 1 Marks
What is the name of the process of converting AC into DC voltage?
A
Inverting
B
Rectifying
C
Amplifying
D
Demodulating
Question 152 1 Marks
How does the values of bias resistors selected for collector current in class -B amplifiers?
A
Q point set slightly below cut-off
B
Quiescent current at mid point
C
Quiescent current beyond the cut-off point
D
Quiescent current over the cut-off value
Question 153 1 Marks
How the maximum permissible voltage that can be applied across the collector ? Emitter junction of a transistor is indicated?
A
VCE (max) in volts
B
VBE (max) in volts
C
VCB (max) in volts
D
VCC in volts
Question 154 1 Marks
Which circuits requires the flip - flops for their operation?
A
Amplifier circuits
B
Oscillator circuits
C
Modulator circuits
D
Memory circuits
Question 155 1 Marks
What is the code number of TRIAC?
A
2N2646
B
BFW10
C
BT136
D
2N1597
Question 156 1 Marks
What is the advantage of PIN photo diodes?
A
Low sensitivity in the infrared range
B
High sensitivity in the infrared range
C
Medium sensitivity in the infrared range
D
Low sensitivity in the Ultraviolet range
Question 157 1 Marks
How the single strand wire is called?
A
Hook - up wire
B
Twisted wire
C
Flexible wire
D
Multistrand wire
Question 158 1 Marks
Which tool works on the principle of air suction?
A
Soldering iron
B
Soldering wick
C
Desoldering braid
D
Desoldering pump
Question 159 1 Marks
Which class of amplifier uses fixed bias because of its imperent advantage of transistor will never go to saturation?
A
Class - A
B
Class - B
C
Class - AB
D
Class - C
Question 160 1 Marks
In which analog meter the battery is provided?
A
Ammeter
B
Voltmeter
C
Ohm meter
D
Watt meter
Question 161 1 Marks
How can you confirm a transistor as defective?
A
By circuit testing
B
By ohm meter testing
C
By physical testing
D
By voltage measurements
Question 162 1 Marks
What is the difference of Colpitts oscillator compare to Hartley oscillator?
A
Uses split inductor
B
Uses split capacitor
C
Uses crystal oscillator
D
Uses SCR combination
Question 163 1 Marks
What is characteristics of instrumentation amplifier?
A
Low input impedance
B
High input impedance
C
High input impedance
D
Infinity output impedance
Question 164 1 Marks
Which component opposes any change in current?
A
Diode
B
Resistor
C
Inductor
D
Capacitor
Question 165 1 Marks
What is the rated output voltage of a silver oxide cell?
A
1.0 VDC
B
1.5 VDC
C
2.5 VDC
D
4.0 VDC
Question 166 1 Marks
Which is the device made and interconnected by two transistors?
A
UJT
B
SCR
C
FET
D
LED
Question 167 1 Marks
Which codes are stored in computer ROM BIOS chip?
A
Change codes
B
Temporary codes
C
Permanent codes
D
Partial change codes
Question 168 1 Marks
What is the shape of mandatory signs?
A
Square
B
Circular
C
Triangular
D
Rectangular
Question 169 1 Marks
Which function control in CRO, adjust the trace sharper?
A
Focus
B
Intensity
C
Time/Div trigger
D
Amplitude (V/Div)
Question 170 1 Marks
What is the percentage of conductivity of electric current in silver?
A
0.56
B
0.67
C
0.94
D
1
Question 171 1 Marks
What is the reason for the use of contactors in control circuits?
A
Supply power to loads
B
To increase load current
C
To decrease load current
D
To protect the load from arcing
Question 172 1 Marks
Which impurity is added to pure semiconductor to form N-type material?
A
Boron
B
Indium
C
Arsenic
D
Gallium
Question 173 1 Marks
What is the resonant frequency range of a crystal?
A
Between 0.1 and 1MHZ
B
Between 0.1 and 10 MHZ
C
Between 0.5 and 25 MHZ
D
Between 0.5 and 30 MhZ
Question 174 1 Marks
Find the total inductance value of two inductors 10H and 15H of connected in series.
A
05 H
B
10 H
C
15 H
D
25 H
Question 175 1 Marks
Which type of packaging is used to transistors utilized for medium power amplification?
A
Plastic packaging with metal heatsinks
B
Ceramic packaging
C
Plastic packaging
D
Metal packaging
Question 176 1 Marks
When does the zener diode begins to conduct in the reverse biased condition?
A
When bias voltage reached 0.7V
B
After the barrier voltage cancelled
C
Voltage across zener reached 0.3V
D
Voltage across it reached the zener voltage
Question 177 1 Marks
Which IC is used for (DEMUX) function in data transmission?
A
IC 7483
B
IC 7486
C
74 LS 138
D
74 LS 151
Question 178 1 Marks
Which is the major factor determines the quality performance of A/D converter?
A
Conversion cycle
B
Measuring parameter
C
Measuring parameter
D
Depends on data latch
Question 179 1 Marks
What is the name of instrument used to measure electrical quantities?
A
Meter
B
Tester
C
Tester
D
Vernier caliper
Question 180 1 Marks
What is the range of current rating of lead acid batteries used in automobiles?
A
5 to 10 Amp
B
10 to 25 Amp
C
2.5 to 4.5 Amp
D
100 to 400 Amp
Question 181 1 Marks
How the flux residue is removed after soldering a joint?
A
Water
B
Petrol
C
Organic flux
D
Isopropyl alcohol
Question 182 1 Marks
What is the name of the circuit that shifts the waveform upward or downward without disturbing its shape?
A
Clipper circuit
B
Clamper circuit
C
Biased clipper circuit
D
Combination clipper circuit
Question 183 1 Marks
How the insulation coating stays without damage, even on bending the wire?
A
Due to wire resistance
B
Due to high current flow
C
Due to elastic property of insulation
D
Due to the strength of the wire material
Question 184 1 Marks
What is the purpose of wood rasp file?
A
90 Degree corners
B
Cutting metals
C
Finishing flat edges
D
Preliminary rough work
Question 185 1 Marks
What is the purpose of standard wire gauge (SWG)?
A
Measure current
B
Measure voltage
C
Measure diameter of wire
D
Measure insulation of wire
Question 186 1 Marks
What is the maximum drain current ID for BFW10?
A
5 mA
B
10 mA
C
20 mA
D
30 mA
Question 187 1 Marks
Which impurity is added to form P - type semiconductor material?
A
Arsenic
B
Gallium
C
Antimony
D
Phosphorus
Question 188 1 Marks
Which battery is used for cellular phones?
A
Nickel ion
B
Lithium ion
C
Zinc chloride
D
Sodium sulphur
Question 189 1 Marks
Which purpose the cadmium sulfide cells (CDS cells) are used?
A
Primary cells
B
Rechargeable cells
C
Light dependent resistor
D
Voltage dependent resistor
Question 190 1 Marks
How many Op-Amps are fabricated inside the LM 324 IC pack?
A
Two Op-Amps
B
Three Op-Amps
C
Three Op-Amps
D
Five Op-Amps
Question 191 1 Marks
Which type of toe caps are used to avoid crushing of feet at the time of shifting equipments?
A
Steel toe caps
B
Plastic toe caps
C
Rubber toe caps
D
Leather toe caps
Question 192 1 Marks
Which is the N - channel FET?
A
AC supply connected to drain termin
B
Main current flows through N-doped material
C
Main current flows through P-doped material
D
S-terminal connected to positive
Question 193 1 Marks
How many electrons are contained in coulomb of electric charge?
A
6.25 x 108 electrons
B
6.25 x 1012 electrons
C
6.25 x 1016 electrons
D
6.25 x 1018 electrons
Question 194 1 Marks
Which type of soldering is used for electronic circuit?
A
Brazing
B
Soft soldering
C
Hot soldering
D
Hard soldering
Question 195 1 Marks
What will happen if the photo resistor (LDR) is exposed to low level light condition?
A
Resistance will decrease to 10 Ohm
B
Resistance will decrease to 100 Ohm
C
Resistance will increase to 1 Kilo Ohm
D
Resistance will increase to around 1 Mega Ohm
Question 196 1 Marks
Which part of the relay causes most trouble?
A
Hinges
B
Relay coil
C
Relay contacts
D
Frame and core
Question 197 1 Marks
Which application the clamper circuit is used in electronics?
A
Radars
B
Radio receivers
C
Storage counters
D
Power supplies
Question 198 1 Marks
How the performance of the amplifier designed using the simulation software is tested?
A
Using multimeter
B
Using measuring equipments
C
Using test and measuring equipments
D
Using virtual instrumentation testing
Question 199 1 Marks
How many gauge numbers in SWG, changed to double the cross section area of the conductor?
A
Two gauge sizes decreased
B
Four gauge sizes increased
C
Five gauge sizes increased
D
Three gauge sizes decreased
Question 200 1 Marks
How many time constants required to change a capacitor to 63.2% of its full charge voltage?
A
Four time constant
B
Three time constant
C
Two time constant
D
One time constant
Question 201 1 Marks
What is the result of forced air is blown to cool the joint while soldering?
A
Solder setting very slowly
B
Results in dry brittle joint
C
Disturbs the chemical bonding
D
Joint becomes mechanically stronger
Question 202 1 Marks
What is the phase relationship between the applied voltage and current in the primary of a transformer with open secondary winding?
A
Voltage lags current by 45 Degree
B
Current lags voltage by 90 Degree
C
Voltage leads current by 45 Degree
D
Current leads voltage by 90 Degree
Question 203 1 Marks
What is the overall base emitter voltage required to turn the darlington pair?
A
0.2 V
B
0.3 V
C
0.7 V
D
1.4 V
Question 204 1 Marks
Which meter is used to find the exact resistance value of resistors?
A
Ammeter
B
Volt meter
C
Ohm meter
D
Watt meter
Question 205 1 Marks
What is the use of screw driver?
A
Hold the screws
B
Tighten or loosen screws
C
Tighten or loosen bolts
D
Tighten or loosen rivets
Question 206 1 Marks
What is the cause of burnt relay contacts?
A
Low contact current
B
Excessive contact current
C
Chatter during a slow release
D
Excessive number of operations
Question 207 1 Marks
Which soldering instrument has hot air blowing facility?
A
Soldering iron
B
Soldering station
C
Wave soldering machine
D
Temperature controlled soldering iron
Question 208 1 Marks
What is the result of hysteresis loss in magnetic material?
A
Back emf increases
B
Eddy current decreases
C
Magnetic flux increases
D
Energy loss takes place
Question 209 1 Marks
What is the full form of the abbreviation LBA in computer system?
A
Low block accessing
B
Large block accessing
C
Large boot addressing
D
Logical block accessing
Question 210 1 Marks
Which is the additional percentage of power delivered by the lithium Ion compared to NiMH battery?
A
0.15
B
25%
C
40%
D
60%
Question 211 1 Marks
What is the shape of warning sign board?
A
Square shape
B
Circular shape
C
Triangular shape
D
Hexagonal shape
Question 212 1 Marks
How the accuracy of amplitude and frequency measured by CRO is checked?
A
By sine wave signal
B
By function generator
C
By complex wave form
D
By built-in calibration signal
Question 213 1 Marks
What is the rated voltage of a single cell in lead acid battery?
A
1.5 V
B
2.0 V
C
2.2 V
D
12 V
Question 214 1 Marks
Which instrument used to measure resistance, capacitance and inductance?
A
LCR bridge
B
Wein bridge
C
Kelvin bridge
D
Wheatstone bridge
Question 215 1 Marks
What is the shape of standard wire gauge?
A
Square metal disk
B
Circular metal disk
C
Cylindrical glass disk
D
Rectangular plastic disk
Question 216 1 Marks
What is the use of flip - flop?
A
It stores energy
B
It stores voltage
C
It stores current
D
It stores binary information
Question 217 1 Marks
What is the function of solid state relay(SSR)?
A
Low pass filter
B
High frequency oscillator
C
High gain amlifier
D
High speed switching
Question 218 1 Marks
What is the current rating of voltage regulator IC LM317L?
A
0.1 A
B
0.2 A
C
0.3 A
D
0.4 A
Question 219 1 Marks
What is the formula used to calculate the current gain (alpha) of common base amplifier?
A
IC/ IE
B
IE/ IC
C
IB/ IE
D
IE/ IC
Question 220 1 Marks
Which mode is used in differential amplifier?
A
Common base
B
Common emitter
C
Common emitter
D
Common - mode operation
Question 221 1 Marks
What is the minimum current ratings of solid state relays available in low power packages?
A
Few micro Amperes
B
10 milli Ampere
C
50 milli Ampere
D
100 milli Ampere
Question 222 1 Marks
What is the purpose of using positive feed back in amplifiers?
A
To produce modulation
B
To produce demodulation
C
To produce oscillation
D
To produce multiplexion
Question 223 1 Marks
Which angle is checked by the try square?
A
45 Degree
B
60 Degree
C
75 Degree
D
90 Degree
Question 224 1 Marks
What is the propagation delay of the standard TTL chip?
A
5 ns
B
8 ns
C
10 ns
D
12 ns
Question 225 1 Marks
Which metal coating is used on compact disk?
A
Silver
B
Nickel
C
Chromium
D
Aluminium
Question 226 1 Marks
What is the use of clamper in electronic circuits?
A
For slicing both peaks
B
For positive peak clipping
C
For negative peak clipping
D
For DC component restoration
Question 227 1 Marks
How the insulators are called?
A
Thyristors
B
Molecules
C
Dielectrics
D
Semiconductors
Question 228 1 Marks
Which step is followed for treating a person from electric shock?
A
Provide water
B
Keep the victim cold
C
Cover the victim with a coat
D
Move the victim to a ventilated place
Question 229 1 Marks
What is the total voltage of six 1.5 V cells, connected in series?
A
3 VDC
B
6 VDC
C
9 VDC
D
12 VDC
Question 230 1 Marks
How many operational amplifiers are fabricated in the LM741 IC?
A
One Op-Amp
B
Two Op-Amps
C
Two Op-Amps
D
Four Op-Amps
Question 231 1 Marks
What is the common and popular application of U.J.T?
A
Multivibrator
B
Voltage regulator
C
Relaxation oscillator
D
Motor speed controller
Question 232 1 Marks
What is the information stored in digital registers?
A
Analog values
B
Binary values
C
Decimal values
D
Alphanumeric values
Question 233 1 Marks
What is the full form of the abbreviation MOSFET?
A
Minimum output signal FET
B
Medium oscillator signal FET
C
Metal oxide semiconductor FET
D
Metal orgamic serial FET
Question 234 1 Marks
Which bearing is supporting the shaft of moving coil assembly in a PMMC instrument?
A
Steel bearings
B
Bush bearings
C
Jewelled bearings
D
Gun metal bearings
Question 235 1 Marks
Which is the fastest A/D conversion techniques?
A
Low speed data acquisition applies
B
Absolute conversion accuracy
C
Absolute conversion accuracy
D
High to medium speed data acquisition applies
Question 236 1 Marks
How the mechanical zero error of panel meter is corrected?
A
By replacing pointer
B
By replacing moving coil
C
By replacing moving coil
D
Keeping the meter in vertical position
Question 237 1 Marks
What is the natural shape of a quartz crystal?
A
Cylindrical shape with pyramid at ends
B
Cube shape with pyramid at ends
C
Pentagonal prism with pyramid at ends
D
Hexagonal prism with pyramid at ends
Question 238 1 Marks
What is the name of the process to maintain the recommended level of electrolyte in lead-acid battery cell?
A
Recharging
B
Topping up
C
Charging the cell
D
Cycling of the cell
Question 239 1 Marks
Which parameter of the wire is directly proportional to the current carrying capacity?
A
Wire resistance
B
Passing current
C
Conductor s shape
D
Conductor s diameter
Question 240 1 Marks
What is the unit of inductance?
A
Joule
B
Farad
C
Henry
D
Watts
Question 241 1 Marks
Why the complementary - symmetry amplifier is preferred over the other types of amplifier configurations?
A
To minimize the gain
B
To get less distortion
C
To get more voltage gain
D
To eleminate the transformer
Question 242 1 Marks
Which electrical quantity is directly proportional to the current carrying capacity of the conductor?
A
Wire resistance
B
Passing current
C
Conductor s shape
D
Conductor s diameter
Question 243 1 Marks
What is the typical forward voltage drop of the RED colour LED?
A
1.8 V
B
2 V
C
2.1 V
D
2.2 V
Question 244 1 Marks
What is the name of the procedure carried out to ensure the trustworthy standards of the measuring instrument?
A
Calibration
B
Range test
C
Re-alignment
D
Testing standards
Question 245 1 Marks
Which electrical parameter is measured by the megger?
A
Current
B
Voltage
C
Insulation resistance
D
Frequency
Question 246 1 Marks
What is the maximum forward gate current (Ig) for BFW10 JFET?
A
5 mA
B
8 mA
C
10 mA
D
20 mA
Question 247 1 Marks
Which type of transistors are required to amplify signals from the microphone /transducer?
A
Low power transistors
B
Medium power transistors
C
High power transistors
D
Epitaxial versa watt transistors
Question 248 1 Marks
Which artificial respiration method to be avoided to a person with abdomen injury?
A
Schafer's method
B
Mouth-to-nose method
C
Nose-to-mouth method
D
Mouth-to-mouth method
Question 249 1 Marks
Which port is used to connect the HDD on the mother board?
A
IDE port
B
Com 1 port
C
Com 2 port
D
Floppy drive port
Question 250 1 Marks
What is the decimal number for the binary number 0101?
A
4
B
5
C
6
D
7
Question 251 1 Marks
How gate is biased in JFET?
A
AC supply function
B
Forward biased
C
Reverse biased
D
Dual supply function
Question 252 1 Marks
Which ratio of tin-lead combination is used for electronic component soldering work?
A
40:60
B
20:40
C
60:40:00
D
63:37:00
Question 253 1 Marks
What is the reason for electric fire?
A
Deviation
B
Open circuit
C
Overloading
D
Proper earthing
Question 254 1 Marks
What is the package type for BF 245B?
A
TO-72
B
TO-92
C
TO-82
D
TO-102
Question 255 1 Marks
What is the unit of electric charge?
A
Volts
B
Hertz
C
Ampere
D
Coulomb
Question 256 1 Marks
Which circuit is used to clip portion of both positive and negative half cycle of input signal voltage?
A
Combination clipper circuit
B
Biased negative clipper circuit
C
Biased positive clipper circuit
D
Unbiased clipper circuit
Question 257 1 Marks
What is the advantage of silicon over germanium for transistor fabrication?
A
Lower thermal stability
B
Higher thermal stability
C
Lower operating voltage
D
Higher amplification factor
Question 258 1 Marks
Which factor determines the inductance value?
A
Material of the coil
B
Diameter of the coil
C
Frequency of the current
D
Current flow through the coil
Question 259 1 Marks
What is the effect on the output voltage in a bridge rectifier circuits, with one diode open?
A
Very low voltage
B
No output DC voltage
C
Full output rated voltage
D
Half of the rated output voltage
Question 260 1 Marks
Which method is followed to troubleshoot the problem causing section by the symptom?
A
Step by step method
B
Sensory test method
C
Trial and error method
D
Logical approach method
Question 261 1 Marks
What is the input impedence of darlington pair transistors?
A
Very low input impedance
B
Very high input impedance
C
Medium input impedance
D
Uniter
Question 262 1 Marks
Which band of frequency is used for RADAR in frequency spectrum allotted by the International Telecommunication Union (ITU)?
A
ITU band - 4
B
ITU band - 6
C
ITU band - 8
D
ITU band - 10
Question 263 1 Marks
Which parameter controls the current flow in a BI-polar transistor?
A
Voltage
B
Current
C
Frequency
D
Resistance
Question 264 1 Marks
What is the type of transistor BPX81?
A
Uni - Junction transistor
B
NPN - Photo transistor
C
PNP - Photo transistor
D
Audio frequency transistor
Question 265 1 Marks
What will happen when the forward bias voltage across the PN junction is increased excessively?
A
Increases the cut - in - voltage
B
Barrier width of junction increases
C
Junction ruptured and short circuited
D
No current flows through the junction
Question 266 1 Marks
When does the biased positive clipper removes the portion of input signal?
A
During the negative half cycle of input
B
Signal voltage is lesser than bias battery
C
Signal voltage equals the bias battery voltage
D
Signal voltage becomes greater than bias battery voltage
Question 267 1 Marks
Which electrical quantity controls the operation of the bipolar transistor device?
A
Energy
B
Current
C
Voltage
D
Frequency
Question 268 1 Marks
Electrical conductivity of gold is
A
56%
B
67%
C
94%
D
100%
Question 269 1 Marks
What is the maximum safe reverse voltage rating of a diode?
A
PIV voltage
B
Knee voltage
C
Break down voltage
D
Forward break down voltage
Question 270 1 Marks
What is the colour of positive electrode in fully charged lead acid battery?
A
Red colour
B
Grey colour
C
Reddish brown
D
Spongy grey colour
Question 271 1 Marks
Which frame is used for winding the coil of PMMC meter?
A
Steel frame
B
Wooden frame
C
Ceramic frame
D
Aluminium frame
Question 272 1 Marks
Which software is used to simulate electronic circuits?
A
Auto cad
B
Multi sim
C
MS office
D
Photo shop
Question 273 1 Marks
Which device is a unipolar transistor?
A
UJT
B
FET
C
BJT
D
IGBT
Question 274 1 Marks
Which mouse action is used to move an object from one location to another?
A
Left clicking
B
Right clicking
C
Drag and drop
D
Double clicking
Question 275 1 Marks
Rate of change of input voltage
A
Rate of change of input voltage
B
Rate of change of output voltage
C
Rate of change of output voltage
D
Rate of change of output frequency
Question 276 1 Marks
What is the maximum emitter to base voltage VEB (max) for the transistor BC 147?
A
4V
B
5V
C
6V
D
8V
Question 277 1 Marks
Which parameter of passive component can be calculated using the formula ?
A
Capacitance
B
Inductance
C
Capacitive reactance
D
Inductive reactance
Question 278 1 Marks
Which material is used as electrical insulator?
A
Gallium
B
Porcelain
C
Aluminium
D
Germanium
Question 279 1 Marks
Which type of clipper is that a small portion of the negative half cycle of signal is removed?
A
Biased positive clipper
B
Biased negative clipper
C
Combination clipper
D
Positive clamper
Question 280 1 Marks
What is the name of the motion of charged particles in any medium?
A
Current
B
Voltage
C
Resistance
D
Frequency
Question 281 1 Marks
What is the forward voltage for the single colour orange LEDs?
A
0.5 V
B
0.8 V
C
2 V
D
2.5 V
Question 282 1 Marks
Which circuit photo SCR opto couplers are used?
A
DC circuits
B
AC powered circuits
C
Amplifier circuits
D
Counter circuits
Question 283 1 Marks
Which circuit is determined by the frequency of LC tank circuit?
A
Oscillator
B
Amplifier
C
Multiplexed
D
Demodulator
Question 284 1 Marks
What is the advantage of MOSFET?
A
Superior current conduction capability
B
Low gate signal power requirements
C
Very low on-state voltage
D
Low driving power
Question 285 1 Marks
Which device is used to test the fully charged condition of a lead acid battery cell?
A
Multimeter
B
Hydrometer
C
DC voltmeter
D
High rate discharge tester
Question 286 1 Marks
How the negative feedback is called?
A
Regenerative feedback
B
Degenerative feedback
C
Current controlled feedback
D
Voltage controlled feedback
Question 287 1 Marks
Which cores are used in intermediate frequency transformers?
A
Steel
B
Nickel
C
Cobalt
D
Ferrite
Question 288 1 Marks
What is the percentage of conductivity of electric current in aluminium?
A
0.22
B
0.47
C
0.56
D
0.76
Question 289 1 Marks
How the single strand wire is called?
A
Flexible wire
B
Twisted wire
C
Hook up wire
D
Multi strand wire
Question 290 1 Marks
Which IC is used for the function of 4 bit shift register?
A
IC 7404
B
IC 7447
C
IC 7493
D
IC 7495
Question 291 1 Marks
Which value is equal to one picofarad?
A
106 Farad
B
1012 Farad
C
10-6 Farad
D
10-12 Farad
Question 292 1 Marks
When does the biased negative clipper removes the portion of input signal?
A
During the positive half cycle of input
B
Signal voltage is lesser than bias battery voltage
C
Signal voltage equals the bias battery voltage
D
Signal voltage becomes greater than bias battery voltage
Question 293 1 Marks
How many transistors are built inside the Very Large Scale Integration (VLSI) IC package?
A
1000 and above
B
1 to 10 transistors
C
10 to 100 transistors
D
100 to 1000 transistors
Question 294 1 Marks
What is the effeciency transformer coupled class A amplifier?
A
Less than 20%
B
About 50%
C
More than 60%
D
Unity
Question 295 1 Marks
What is the shape of prohibition sign?
A
Square
B
Circular
C
Triangular
D
Rectangular
Question 296 1 Marks
Which step is important for soldering a joint?
A
Heating the joint
B
Cooling the joint
C
Pasting the joint
D
Cleaning the joint
Question 297 1 Marks
What is the use of photo transistor?
A
Used in comparator circuit
B
Used as light controlled switch
C
Used as oscillator
D
Used as demodulator
Question 298 1 Marks
Which circuit uses the enhancement type MOSFET?
A
High frequency switching circuits
B
High power amplifier circuits
C
Low power oscillator circuits
D
Integrated MOS switching circuits
Question 299 1 Marks
What is the switching speed of solid state relays?
A
1 to 25 nano seconds
B
10 to 60 nano seconds
C
1 to 100 nano seconds
D
1 to 100 milli seconds
Question 300 1 Marks
What is the advantage of MOSFET?
A
Fast switching speed
B
Slow switching speed
C
Higher power gate signal
D
Low thermal ionisation of electron-holes
Question 301 1 Marks
What is the electrolyte level maintained above the top of the plates in lead acid battery cells?
A
2 mm to 4 mm
B
5 mm to 8 mm
C
10 mm to 15 mm
D
16 mm to 25 mm
Question 302 1 Marks
Which device is used to produce hard copy of a document in a computer?
A
Printer
B
Monitor
C
Modem
D
Speaker
Question 303 1 Marks
What is the maximum specified voltage for the TRIAC TIC 201D?
A
1.5 V
B
1.7 V
C
2.1 V
D
2.5 V
Question 304 1 Marks
What is the function of pin number 4 of the IC 555?
A
Set
B
Reset
C
Reset
D
Threshold
Question 305 1 Marks
How batteries are classified based on their working?
A
Dry cells and alkaline cells
B
Button cells and lithium cells
C
Primary cells and secondary cells
D
Cylindrical cells and rectangular cells
Question 306 1 Marks
Which parameter is measured by a multimeter?
A
Voltage
B
Energy
C
Frequency
D
Time duration
Question 307 1 Marks
What is the advantage of photo transistors over photo diodes?
A
Considerably lower sensitivity
B
Limit voltage handling capacity
C
Considerable greater sensitivity
D
Vulnerable to electrical sources
Question 308 1 Marks
Which factor influences the severity of electrical shock?
A
Very low DC voltage
B
Duration of current passing
C
Level of current in micro ampere
D
Person receives the shock
Question 309 1 Marks
What is the lowest voltage level of discharging the lead-acid battery?
A
1.2 V
B
1.5 V
C
1.7 V
D
1.85 V
Question 310 1 Marks
How the circuit schematic drawn using the simulation software is tested?
A
Using multimeter
B
Using analysis menu
C
Using virtual oscilloscope
D
Using external oscilloscope
Question 311 1 Marks
What is the output frequency of the pulsating DC in a two diode fullwave rectifier?
A
Half of the input A/C frequency
B
Double the input A/C frequency
C
Same frequency of the A/C input
D
Three times the input A/C frequency
Question 312 1 Marks
What is the voltage gain in a transistor if the input voltage in 40mv and the output voltage in 3.6V?
A
45
B
90
C
180
D
270
Question 313 1 Marks
What is the full form of the abbreviation CD-ROM in computer?
A
Classified Device Read Only Memory
B
Computer Disk Read Only Memory
C
Connectivity Digital Read Only Memory
D
Compact Disk Read Only Memory
Question 314 1 Marks
Which three terminal voltage regulator IC has adjustable output?
A
LM 100
B
LM 105
C
LM 305
D
LM 317
Question 315 1 Marks
How the drive circuits for the power MOSFETs are coupled?
A
Direct coupling method
B
Using logic circuitry
C
Using pulse transformer
D
Using transistors
Question 316 1 Marks
How the gas and liquefied gases are classified
A
Class A fire
B
Class B fire
C
Class C fire
D
Class D fire
Question 317 1 Marks
What is the power dissipation of the standard TTL chip?
A
5 mW/gate
B
10 mW/gate
C
15 mW/gate
D
20 mW/gate
Question 318 1 Marks
What is the function of schottky diode BA 157 in SMPS circuit?
A
Error amplifier
B
Switching diode
C
Voltage regulator
D
Fast recovery diode
Question 319 1 Marks
What are the uses of simulation softwares?
A
Design a circuit
B
Design and test a circuit
C
Replace defective components
D
Solder and desolder components
Question 320 1 Marks
What is the range of output voltage of regulator IC LM 317?
A
0 to 25 V
B
0 to 30 V
C
0 to 32 V
D
1.2 V to 32 V
Question 321 1 Marks
How many time constant period is required to fully charge a capacitor?
A
10 time constants
B
7 time constants
C
5 time constants
D
3 time constants
Question 322 1 Marks
Which is the first step followed in troubleshooting of electronic circuit?
A
Thermal test
B
Chemical test
C
Mechanical test
D
Physical and sensory test
Question 323 1 Marks
In which quantity affects the Q point of a transistor amplifier?
A
Decreased temperature
B
Increased temperature
C
Proper biasing methods
D
Mismatching signals
Question 324 1 Marks
Which is the package type for the JFET BFW10?
A
TO-62
B
TO-72
C
TO-82
D
TO-92
Question 325 1 Marks
Which coding system for transistor type numbering system is followed by American standard?
A
JIS standard
B
Home codes
C
JEDEC standard
D
PRO-ELECTRON standard
Question 326 1 Marks
At which temperature the 6040 solder start meeting?
A
100 Degree Centigrade
B
200 Degree Centigrade
C
300 Degree Centigrade
D
380 Degree Centigrade
Question 327 1 Marks
Which section is used by the processor to save instructions?
A
Memory
B
System unit
C
Graphics card
D
Micro processor
Question 328 1 Marks
What is the meaning of maximum safe reverse voltage across a diode?
A
PIV voltage
B
Knee voltage
C
Break down voltage
D
Reverse break down voltage
Question 329 1 Marks
Which process the ICS are made?
A
Grown junction process
B
Point contact junction process
C
Point contact junction process
D
Micro photo - lithographic process
Question 330 1 Marks
How power rating is specified for transformers?
A
Watts (W)
B
Voltage (V)
C
Volt ampere (VA)
D
Horse power (HP)
Question 331 1 Marks
What is the output pulse frequency of the full wave rectifier with input frequency of 50 Hz?
A
40 Hz
B
60 Hz
C
100 Hz
D
200 Hz
Question 332 1 Marks
What is the first step to rescue the person in electrical contact?
A
Break the contact
B
Call the doctor
C
Switch OFF power supply
D
Pull the person from electrical contact
Question 333 1 Marks
What is the name of effect of changing current in one coil, induces EMF in nearby coil?
A
Coupling
B
Induction
C
Self induction
D
Mutual induction
Question 334 1 Marks
What is the use of battery analyzers with rapid-test program?
A
Test the battery life
B
Test the load current delivered
C
Test the charging current of battery
D
Indicate the health condition of battery
Question 335 1 Marks
Which band is used for UHF in International Telecommunication System?
A
Band 4
B
Band 6
C
Band 9
D
Band 11
Question 336 1 Marks
What is the name of the pair of metal strips used in battery cell?
A
Cathode
B
Electrolyte
C
Electrodes
D
Carbon rod
Question 337 1 Marks
Which is the property of IGBT?
A
Low input impedance
B
High efficiency and fast switching
C
Low gate signal
D
Significant power consumption
Question 338 1 Marks
What is the full form of electronic component MOV?
A
Metal Over Varistor
B
Metal Over Varactor
C
Metal Oxide Varistor
D
Metal Oxide Varactor
Question 339 1 Marks
Which configuration of transistor amplifier is most commonly used in electronic circuits?
A
Common base configuration
B
Common emitter configuration
C
Common collector configuration
D
Common drain amplifier configuration
Question 340 1 Marks
Which tool is used for seaming the funnel like taper?
A
Vices
B
Angle steel
C
Hatchet stake
D
Blow horn stake
Question 341 1 Marks
What is the advantage of SMPS in computer?
A
Bulky
B
High efficiency
C
High frequency noise low
D
Servicing of SMPS is easy
Question 342 1 Marks
Why LC tuned circuits are not used in audio frequency oscillators?
A
LC values required is too large
B
LC components are not available
C
LC tank circuit does not produce AF signals
D
LC tank circuit operation requires high voltage
Question 343 1 Marks
What is the effect on the current flow with increased diameter of conductor?
A
Resistance increases
B
Opposes more current
C
More voltage dropped
D
Allows high current flow
Question 344 1 Marks
What is the specific gravity of concentrated sulphuric acid?
A
1.175
B
1.245
C
1.835
D
1.945
Question 345 1 Marks
Which type of defects are occurring in solid
state relays?
A
More sparking
B
Intermittent working
C
Tendency to fail open
D
Tendency to fail shorted
Question 346 1 Marks
Which materials are used for semiconductor?
A
Gallium and indium
B
Silver and aluminium
C
Arsenic and antimony
D
Silicon and germanium
Question 347 1 Marks
How batteries are classified?
A
Dry cells and alkaline cells
B
Button cells and lithium cells
C
Primary cells and secondary cells
D
Cylindrical cells and rectangular cells
Question 348 1 Marks
Which material is used for making instrument cabinets?
A
Wood
B
Plastic
C
Hard rubber
D
Sheet metal
Question 349 1 Marks
What is the name of multi-stage amplifiers?
A
Cascoded amplifier
B
Cascaded amplifier
C
Complementry symmetry amplifier
D
Darlington pair amplifier
Question 350 1 Marks
Which diode is used in low power communication circuits?
A
Signal diodes
B
Rectifier diodes
C
Switching diodes
D
High power diodes
Question 351 1 Marks
What is the advantage of using bias in transistor circuits?
A
Provides positive feed back
B
Never reach saturation
C
Easily sets saturated
D
Gives maximum distortion
Question 352 1 Marks
What is the code number of TRIAC?
A
2N2646
B
BFW10
C
BT136
D
2N1597
Question 353 1 Marks
What is the purpose of damping torque in PMMC meter?
A
Control the pivot point
B
Control the jewel bearing
C
Control the magnetic field
D
Control the swinging of the coil
Question 354 1 Marks
Which is the 3 terminal, negative voltage regulator IC?
A
LM 320
B
LM 340
C
IC 7905
D
IC 7812
Question 355 1 Marks
What is the advantage of using digital multimeter?
A
Accuracy
B
Linear scale
C
Easy portability
D
Logarithmic scale
Question 356 1 Marks
Which is the maximum size of drill bit used in electrical hand drilling machine?
A
0.35 mm
B
1.5 mm
C
3.5 mm
D
6.5 mm
Question 357 1 Marks
What is the term stands for TRIAC?
A
Triode Alternate control
B
Triode DC semiconductor
C
Triode AC semiconductor
D
Triode Access console
Question 358 1 Marks
Which meter uses a moving coil for measurement?
A
LCR meter
B
PMMC meter
C
MI repulsion type
D
MI attraction type
Question 359 1 Marks
Why the load testing is done on the lead-acid battery?
A
Test the dimensional accuracy
B
Verify the rated power delivery
C
Measure the rated output voltage
D
Test I2R power loss in the battery cell
Question 360 1 Marks
Which is the N - channel FET?
A
AC supply connected to drain termin
B
Main current flows through N-doped material
C
Main current flows through P-doped material
D
S-terminal connected to positive
Question 361 1 Marks
What is the package type for BF 245B?
A
TO-72
B
TO-92
C
TO-82
D
TO-102
Question 362 1 Marks
What is the minimum forward current If for single colour LEDs?
A
5 MA
B
10 MA
C
20 MA
D
30 MA
Question 363 1 Marks
What is the effect on a secondary cell supplying current to the load?
A
Leaking
B
Charging
C
Unloading
D
Discharging
Question 364 1 Marks
In computer processing data, which table maintain the size of the partition?
A
Process table
B
Partition table
C
Program table
D
Procedure table
Question 365 1 Marks
What is the full of the abbreviation DPDT used in switches?
A
Dual Phase Dual Throw
B
Double Pole Direct Throw
C
Direct Pole Double Throw
D
Double Pole Double Throw
Question 366 1 Marks
What is the specified Vcc voltage of 4 bit digital switch with 4 independent lines?
A
1.5 V to 2.2 V
B
2.3 V to 3.6 V
C
4.5 V to 5.5 V
D
5.0 V to 7.5 V
Question 367 1 Marks
What type of ripple filter circuit is used for large load current requirements?
A
LC filter
B
RC filter
C
Inductor Input filter
D
Capacitor Input filter
Question 368 1 Marks
What is the maximum drain- source voltage, VDS for the JFET BF 245B?
A
10 V
B
20 V
C
30 V
D
40 V
Question 369 1 Marks
What is the minimum current rating of four diode bridge rectifier to supply load current of 1.8 Amp?
A
0.9 Amp
B
1.8 Amp
C
2.0 Amp
D
5.0 Amp
Question 370 1 Marks
What is the limitation of integrated circuits?
A
Increased reliability
B
Greater flexibility
C
Greater flexibility
D
Drains more current
Question 371 1 Marks
Which device converts digital data from computer into analog data and transmit through telephone line?
A
MODEM
B
Chipset
C
Processor
D
Cache memory
Question 372 1 Marks
What is stationary electric charges?
A
Static charges
B
Kinetic charges
C
Chemical charges
D
Electrical charges
Question 373 1 Marks
How the overlapping of excess sheet metal causing bulge at seam and edge is prevented?
A
Mallet
B
Notches
C
L - angles
D
Square stake
Question 374 1 Marks
What should be the time constant t = RC for a good clamper circuit with reference to time period of the input signal?
A
Half the time period of signal
B
Double the time of signal frequency
C
Five times the time period of signal
D
RC valves should be at least ten times
Question 375 1 Marks
What is the purpose of trimmer capacitor?
A
Coupling
B
Filtering
C
Decoupling
D
Fine tuning
Question 376 1 Marks
Which is the transistor used to operate the Colpitts oscillator?
A
AC 127
B
BF 194B
C
BC 148B
D
AC 188
Question 377 1 Marks
Which is electronic simulation software?
A
AutoCAD
B
MS Office
C
Macspice
D
Photoshop
Question 378 1 Marks
What is the main problem caused for severe pitting in relays?
A
Low contact current
B
Excessive contact current
C
Chatter during a slow release
D
Excessive number of operations
Question 379 1 Marks
How the electrical quantity measured by the meter is marked in it?
A
Using colour codes
B
Printing the valves
C
Printing the valves
D
Directly printing the specifications
Question 380 1 Marks
Which is the major factor to determine the quality performance of A/D converter?
A
Degree of accuracy
B
Number of bits used
C
Number of bits used
D
Proportional to the binary weight
Question 381 1 Marks
What is the meaning of first letter indicated in the transistor code number BC 107?
A
Germanium material used
B
Silicon material used
C
Antimony material used
D
Indium material used
Question 382 1 Marks
Which property of the capacitor stores electrical energy in electrostatic field?
A
Dielectric
B
Capacitance
C
Stray capacitance
D
Capacitive reactance
Question 383 1 Marks
What is the effect of shaking the soldered joint while cooling?
A
Flux will not dissolve
B
It will corrode the joint
C
It results in oxidation of solder
D
It disturbs the chemical bonding take place
Question 384 1 Marks
What is the typical forward voltage drop of the yellow colour LED?
A
2.2 V
B
2.1 V
C
2 V
D
1.8 V
Question 385 1 Marks
What is the main advantages of IGBT over BJT?
A
Fast switching speed
B
Superior current conduction capability
C
Reverse bias secondary break downs
D
Thermal limits are pushed to the edge
Question 386 1 Marks
What is the current gain of common collector amplifier?
A
Low
B
High
C
Medium
D
Very high
Question 387 1 Marks
What is the maximum drain current, ID for BF 245B?
A
15mA
B
25mA
C
35mA
D
45mA
Question 388 1 Marks
What is the maximum drain - source voltage, VDS for BFW10?
A
20 V
B
30 V
C
40 V
D
50 V
Question 389 1 Marks
Which tool is used for the simplest method of skinning wires?
A
Electrician's knife
B
Manual wire stripper
C
Thermal wire stripper
D
Mechanical wire stripper
Question 390 1 Marks
What is the defect on the soldered joint, if it is cooled by blowing air?
A
Poor wetting
B
Pits and voids
C
Dry solder joint
D
Dull grainy surface
Question 391 1 Marks
What is the name of the circuit that shifts the original signal in a vertical upward direction?
A
Peak clipper circuit
B
Negative clamping circuit
C
Positive clamping circuit
D
Combination clipper circuit
Question 392 1 Marks
Which memory device loses data on power failure?
A
RAM
B
ROM
C
Hard disc
D
CD ROM
Question 393 1 Marks
Why the electronic device IGBT is preferred over the power MOSFET?
A
Low switching speed
B
Higher driving power requirement
C
Higher switching repetition rates
D
Suitability for medium power applications
Question 394 1 Marks
What is the peak to peak voltage in a bridge rectifier circuit with load current of 10 mA, capacitance of 470 F and 50 Hz supply frequency?
A
0.213 v
B
1.525 v
C
2.134 v
D
3.567 v
Question 395 1 Marks
Why transistors made of silicon is preferred over the germanium semiconductor material?
A
Complex design
B
Higher thermal stability
C
Requires complicated bias arrangement
D
Silicon transistor needs low cut-in-voltage
Question 396 1 Marks
What is the maximum specified voltage for the TRIAC TIC 201D?
A
1.5 V
B
1.7 V
C
2.1 V
D
2.5 V
Question 397 1 Marks
Which is the combination of photo transistor?
A
LASER diode and pin diode
B
Photo transistor and DIAC
C
Photo diode and transistor
D
Photo resistor and TRIAC
Question 398 1 Marks
Where the programs and datas are stored after execution in computer?
A
Buffer
B
Chip set
C
Memory
D
Processor
Question 399 1 Marks
How many layers of PN - junctions are used in SCR fabrication?
A
Two layer two junctions
B
Four layer three junctions
C
Three layer three junctions
D
Three layer four junctions
Question 400 1 Marks
Which current flows in TRIAC between MT1 and MT2?
A
Conventional current
B
Principal current
C
Reverse current
D
Leakage current
Question 401 1 Marks
What is the disadvantage of the two diode full wave rectifier compared with a bridge rectifier?
A
DC output level is higher
B
The ripple frequency is higher
C
The need of bulky transformer
D
Each diode carries half the load current
Question 402 1 Marks
Which port is used to connect a plug and play peripheral device to CPU?
A
USB port
B
RJ45 port
C
COM 1 port
D
COM 2 port
Question 403 1 Marks
How much time is required to make a quality soldered joint using soldering iron?
A
3 - 7 seconds
B
7 - 10 seconds
C
10 - 15 seconds
D
15 - 20 seconds
Question 404 1 Marks
What is the purpose of vacuum contactors in electrical panel?
A
Fast switching
B
Slow switching
C
Packet switching
D
Medium switching
Question 405 1 Marks
What is the expansion of PRF related to frequency?
A
Power regulated frequency
B
Pulse repetition frequency
C
Pulse repetition frequency
D
Pulse probability frequency
Question 406 1 Marks
Which meter movement is not affected by stray magnetic fields?
A
PMMC meter
B
Thermo couple meter
C
MI meter - attraction type
D
MI meter - Repulsion type
Question 407 1 Marks
What is the main application of photo resistor?
A
Voltage rectification
B
Demodulation purpose
C
Controls of street lighting systems
D
To generate oscillations
Question 408 1 Marks
What is the full form of the abbreviation PMMC meter?
A
Parallel Magnet Moving Coil meter
B
Position Magnet Moving Coil meter
C
Principle Magnet Moving Coil meter
D
Permanent Magnet Moving Coil meter
Question 409 1 Marks
What is the unit of electric charge?
A
Volts
B
Hertz
C
Ampere
D
Coulomb
Question 410 1 Marks
Which component is used to prevent over voltage of AC supply in SMPS?
A
Metal film resistor
B
Carbon film resistor
C
Metal oxide varistor
D
Wire wound resistor
Question 411 1 Marks
What is the advantage of IGBT?
A
Low driving power
B
Low gate signal power
C
Fast switching speed
D
Used to isolate logic circuits
Question 412 1 Marks
What are the fundamental properties of insulation materials?
A
Length and cross sectional area
B
Low resistance and thermal heat
C
Temperature and electrical hazards
D
Insulation resistance and dielectric strength
Question 413 1 Marks
How many inputs are available in the 7447 BCD-to-seven segment decoder used to drive the LED display?
A
One
B
Four
C
Seven
D
Eight
Question 414 1 Marks
At which condition the cold resistance of the low voltage lamp is measured using ohmmeter?
A
Lamp is ON at 100 Degree Centigrade
B
Lamp is ON at 320 Degree Centigrade
C
Lamp is ON at 400 Degree Centigrade
D
Lamp is OFF at room temperature
Question 415 1 Marks
What is the colour code for 100 Ohm resistor?
A
Brown, black, red
B
Black, brown, black
C
Brown, black, brown
D
Brown, brown, brown
Question 416 1 Marks
Which type of amplifier in used to operate the loud speaker?
A
IF amplifier
B
RF amplifier
C
Power amplifier
D
Voltage amplifier
Question 417 1 Marks
What is the common and popular application of U.J.T?
A
Multivibrator
B
Voltage regulator
C
Relaxation oscillator
D
Motor speed controller
Question 418 1 Marks
Which voltage level is reached to increase the current through DIAC rapidly?
A
Cut in voltage
B
Zener voltage
C
Break over voltage
D
Break down voltage
Question 419 1 Marks
Which of the device is opto-coupled TRIACS?
A
BT136
B
B3202
C
2N2648
D
MOC3020
Question 420 1 Marks
How to overcome the problem of frequency drift in LC oscillators?
A
Apply opposite polarity of signal
B
Provide negative feedback
C
Using high Q coils and good quality capacitors
D
Increase the supply voltage
Question 421 1 Marks
What is the power dissipated if 10mA current flows through a 10K Ohm resistor?
A
1000 milli watts
B
2000 milli watts
C
3000 milli watts
D
4000 milli watts
Question 422 1 Marks
Which class of fire is classified involving metals?
A
Class A
B
Class B
C
Class C
D
Class D