Quiz Questions - ITI Quiz - 11-Jun-2026 02:57 PM

Question 1 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 2 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 3 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 4 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 5 1 Marks

How the single strand wire is called?

A

Flexible wire

B

Twisted wire

C

Hook up wire

D

Multi strand wire

Question 6 1 Marks

How power rating is specified for transformers?

A

Watts (W)

B

Voltage (V)

C

Volt ampere (VA)

D

Horse power (HP)

Question 7 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 8 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 9 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 10 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 11 1 Marks

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

A

Arsenic

B

Gallium

C

Antimony

D

Phosphorus

Question 12 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 13 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 14 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 15 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 16 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 17 1 Marks

What is the package type for BF 245B?

A

TO-72

B

TO-92

C

TO-82

D

TO-102

Question 18 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 19 1 Marks

Which is the package type for the JFET BFW10?

A

TO-62

B

TO-72

C

TO-82

D

TO-92

Question 20 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 21 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 22 1 Marks

How many alternating layers are there in IGBT?

A

2 layers

B

3 layers

C

4 layers

D

Single layer

Question 23 1 Marks

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

A

Ammeter

B

Ohmmeter

C

Voltmeter

D

Oscilloscope

Question 24 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 25 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 26 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 27 1 Marks

What is stationary electric charges?

A

Static charges

B

Kinetic charges

C

Chemical charges

D

Electrical charges

Question 28 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 29 1 Marks

Where the programs and datas are stored after execution in computer?

A

Buffer

B

Chip set

C

Memory

D

Processor

Question 30 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 31 1 Marks

What is the reason for electric fire?

A

Deviation

B

Open circuit

C

Overloading

D

Proper earthing

Question 32 1 Marks

Which mode is used in differential amplifier?

A

Common base

B

Common emitter

C

Common emitter

D

Common - mode operation

Question 33 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 34 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 35 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 36 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 37 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 38 1 Marks

Which electrical property opposes the flow of electrons?

A

Power

B

Voltage

C

Current

D

Resistance

Question 39 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 40 1 Marks

What is the process of adding impurities to a pure semi conductor material?

A

Doping

B

Etching

C

Forming

D

Diffusion

Question 41 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 42 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 43 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 44 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 45 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 46 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 47 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 48 1 Marks

Which metal has very good conductivity of electric current?

A

Gold

B

Silver

C

Copper

D

Aluminium

Question 49 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 50 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 51 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 52 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 53 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 54 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 55 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 56 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 57 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 58 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 59 1 Marks

Which unit is used to measure capacitance value?

A

Mho

B

Ohm

C

Farad

D

Henry

Question 60 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 61 1 Marks

Which is the package type for the JFET BFW10?

A

TO-62

B

TO-72

C

TO-82

D

TO-92

Question 62 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 63 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 64 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 65 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 66 1 Marks

Which circuit photo SCR opto couplers are used?

A

DC circuits

B

AC powered circuits

C

Amplifier circuits

D

Counter circuits

Question 67 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 68 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 69 1 Marks

Which parameter is maintained constant in zener diode?

A

Power

B

Current

C

Voltage

D

Resistance

Question 70 1 Marks

What is the current gain of common collector amplifier?

A

Low

B

High

C

Medium

D

Very high

Question 71 1 Marks

What is the specific gravity of concentrated sulphuric acid?

A

1.175

B

1.245

C

1.835

D

1.945

Question 72 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 73 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 74 1 Marks

What is the code number of TRIAC?

A

2N2646

B

BFW10

C

BT136

D

2N1597

Question 75 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 76 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 77 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 78 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 79 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 80 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 81 1 Marks

Which material conducts electricity?

A

Mica

B

Paper

C

Glass

D

Copper

Question 82 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 83 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 84 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 85 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 86 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 87 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 88 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 89 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 90 1 Marks

How the flux residue is removed after soldering a joint?

A

Water

B

Petrol

C

Organic flux

D

Isopropyl alcohol

Question 91 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 92 1 Marks

Which is the 3 terminal, negative voltage regulator IC?

A

LM 320

B

LM 340

C

IC 7905

D

IC 7812

Question 93 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 94 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 95 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 96 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 97 1 Marks

Which insulation layer is used in MOSFET?

A

Silicon-di-oxide

B

Arsenic material

C

Antimony material

D

Germanium material

Question 98 1 Marks

What is the shape of mandatory signs?

A

Square

B

Circular

C

Triangular

D

Rectangular

Question 99 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 100 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