Quiz Questions - ITI Quiz - 15-Jul-2026 07:06 PM

Question 1 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 2 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 3 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 4 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 5 1 Marks

Which application the clamper circuit is used in electronics?

A

Radars

B

Radio receivers

C

Storage counters

D

Power supplies

Question 6 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 7 1 Marks

What is the name of instrument used to measure electrical quantities?

A

Meter

B

Tester

C

Tester

D

Vernier caliper

Question 8 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 9 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 10 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 11 1 Marks

How gate is biased in JFET?

A

AC supply function

B

Forward biased

C

Reverse biased

D

Dual supply function

Question 12 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 13 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 14 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 15 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 16 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 17 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 18 1 Marks

Which bonding material is used for soldering a joint?

A

Oil

B

Flux

C

Acid

D

Grease

Question 19 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 20 1 Marks

Which torque is used in PMMC meter movement?

A

Low torque

B

High torque

C

Moderate torque

D

Insufficient torque

Question 21 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 22 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 23 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 24 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 25 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 26 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 27 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 28 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 29 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 30 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 31 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 32 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 33 1 Marks

How power rating is specified for transformers?

A

Watts (W)

B

Voltage (V)

C

Volt ampere (VA)

D

Horse power (HP)

Question 34 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 35 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 36 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 37 1 Marks

Which material is used as electrical insulator?

A

Gallium

B

Porcelain

C

Aluminium

D

Germanium

Question 38 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 39 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 40 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 41 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 42 1 Marks

What is the specific gravity of concentrated sulphuric acid?

A

1.175

B

1.245

C

1.835

D

1.945

Question 43 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 44 1 Marks

What is the maximum drain current, ID for BF 245B?

A

15mA

B

25mA

C

35mA

D

45mA

Question 45 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 46 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 47 1 Marks

Which of the device is opto-coupled TRIACS?

A

BT136

B

B3202

C

2N2648

D

MOC3020

Question 48 1 Marks

Which component filter the ripples in the rectifier circuit?

A

DIAC

B

Diode

C

TRIAC

D

Capacitor

Question 49 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 50 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 51 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 52 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 53 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 54 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 55 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 56 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 57 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 58 1 Marks

How is the soldering method used for joining large metal called?

A

Welding

B

Brazing

C

Hot soldering

D

Soft soldering

Question 59 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 60 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 61 1 Marks

What is the unit of inductance?

A

Joule

B

Farad

C

Henry

D

Watts

Question 62 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 63 1 Marks

What is the code number of TRIAC?

A

2N2646

B

BFW10

C

BT136

D

2N1597

Question 64 1 Marks

Which electrical parameter is measured by the megger?

A

Current

B

Voltage

C

Insulation resistance

D

Frequency

Question 65 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 66 1 Marks

What is the function of pin number 2 of IC 555 timer circuit?

A

"+VCC"

B

Trigger

C

Trigger

D

Reset

Question 67 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 68 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 69 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 70 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 71 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 72 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 73 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 74 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 75 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 76 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 77 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 78 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 79 1 Marks

Which impurity is added to form P - type semiconductor material?

A

Arsenic

B

Gallium

C

Antimony

D

Phosphorus

Question 80 1 Marks

How the negative feedback is called?

A

Regenerative feedback

B

Degenerative feedback

C

Current controlled feedback

D

Voltage controlled feedback

Question 81 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 82 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 83 1 Marks

Which function control in CRO, adjust the trace sharper?

A

Focus

B

Intensity

C

Time/Div trigger

D

Amplitude (V/Div)

Question 84 1 Marks

Which circuit uses photo-darlington devices?

A

DC circuits

B

Counter circuits

C

Amplifier circuits

D

AC powered circuits

Question 85 1 Marks

Which electrical quantity controls the operation of the bipolar transistor device?

A

Energy

B

Current

C

Voltage

D

Frequency

Question 86 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 87 1 Marks

Which formula is used to find the conductance?

A

Q / V

B

I x R

C

V / I

D

I / V

Question 88 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 89 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 90 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 91 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 92 1 Marks

How many ohms is equal to one Mega ohm?

A

10 kW

B

100 kW

C

1000 kW

D

2000 kW

Question 93 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 94 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 95 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 96 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 97 1 Marks

What is the function of pin number 4 of the IC 555?

A

Set

B

Reset

C

Reset

D

Threshold

Question 98 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 99 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 100 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 101 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 102 1 Marks

Which is the device made and interconnected by two transistors?

A

UJT

B

SCR

C

FET

D

LED

Question 103 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 104 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 105 1 Marks

Which circuits commonly use parallel-fed Hartley oscillators?

A

Stereo amplifiers

B

Radio receivers

C

Television receivers

D

Automatic voltage stabilizers

Question 106 1 Marks

Which circuit is determined by the frequency of LC tank circuit?

A

Oscillator

B

Amplifier

C

Multiplexed

D

Demodulator

Question 107 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 108 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 109 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 110 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 111 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 112 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 113 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 114 1 Marks

What is produced by the power supply connected soldering iron?

A

Fire

B

Heat

C

Cool air

D

Water vapour

Question 115 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 116 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 117 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 118 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 119 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 120 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 121 1 Marks

What is the unit of electric charge?

A

Volts

B

Hertz

C

Ampere

D

Coulomb

Question 122 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 123 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 124 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 125 1 Marks

Which method is used for blanketing with foam to extinguish the fire?

A

Cooling

B

Starving

C

Smothering

D

Heating

Question 126 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 127 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 128 1 Marks

Which parameter of passive component can be calculated using the formula ?

A

Capacitance

B

Inductance

C

Capacitive reactance

D

Inductive reactance

Question 129 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 130 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 131 1 Marks

Which material conducts electricity?

A

Mica

B

Paper

C

Glass

D

Copper

Question 132 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 133 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 134 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 135 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 136 1 Marks

What is the information stored in digital registers?

A

Analog values

B

Binary values

C

Decimal values

D

Alphanumeric values

Question 137 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 138 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 139 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 140 1 Marks

Which mode is used in differential amplifier?

A

Common base

B

Common emitter

C

Common emitter

D

Common - mode operation

Question 141 1 Marks

Which value is equal to one picofarad?

A

106 Farad

B

1012 Farad

C

10-6 Farad

D

10-12 Farad

Question 142 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 143 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 144 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 145 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 146 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 147 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 148 1 Marks

How the insulators are called?

A

Thyristors

B

Molecules

C

Dielectrics

D

Semiconductors

Question 149 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 150 1 Marks

Which part of the relay causes most trouble?

A

Hinges

B

Relay coil

C

Relay contacts

D

Frame and core

Question 151 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 152 1 Marks

Which three terminal voltage regulator IC has adjustable output?

A

LM 100

B

LM 105

C

LM 305

D

LM 317

Question 153 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 154 1 Marks

Which measuring instrument is used to make quick test on a TRIAC?

A

Ammeter

B

Ohmmeter

C

Voltmeter

D

Oscilloscope

Question 155 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 156 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 157 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 158 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 159 1 Marks

Which metal has very good conductivity of electric current?

A

Gold

B

Silver

C

Copper

D

Aluminium

Question 160 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 161 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 162 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 163 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 164 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 165 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 166 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 167 1 Marks

Which impurity is added to pure semiconductor to form N-type material?

A

Boron

B

Indium

C

Arsenic

D

Gallium

Question 168 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 169 1 Marks

Which metal coating is used on compact disk?

A

Silver

B

Nickel

C

Chromium

D

Aluminium

Question 170 1 Marks

What is the limitation of integrated circuits?

A

Increased reliability

B

Greater flexibility

C

Greater flexibility

D

Drains more current

Question 171 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 172 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 173 1 Marks

Which property of the capacitor stores electrical energy in electrostatic field?

A

Dielectric

B

Capacitance

C

Stray capacitance

D

Capacitive reactance

Question 174 1 Marks

Which insulation layer is used in MOSFET?

A

Silicon-di-oxide

B

Arsenic material

C

Antimony material

D

Germanium material

Question 175 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 176 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