Quiz Questions - ITI Quiz - 05-Feb-2026 11:03 AM

Question 1 1 Marks

How power rating is specified for transformers?

A

Watts (W)

B

Voltage (V)

C

Volt ampere (VA)

D

Horse power (HP)

Question 2 1 Marks

What is the unit of inductance?

A

Joule

B

Farad

C

Henry

D

Watts

Question 3 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 4 1 Marks

How many ohms is equal to one Mega ohm?

A

10 kW

B

100 kW

C

1000 kW

D

2000 kW

Question 5 1 Marks

Which unit is used to measure capacitance value?

A

Mho

B

Ohm

C

Farad

D

Henry

Question 6 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 7 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 8 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 9 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 10 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 11 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 12 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 13 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 14 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 15 1 Marks

Which component opposes any change in current?

A

Diode

B

Resistor

C

Inductor

D

Capacitor

Question 16 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 17 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 18 1 Marks

What is the purpose of trimmer capacitor?

A

Coupling

B

Filtering

C

Decoupling

D

Fine tuning

Question 19 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 20 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 21 1 Marks

Which part of the relay causes most trouble?

A

Hinges

B

Relay coil

C

Relay contacts

D

Frame and core

Question 22 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 23 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 24 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 25 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