Sparks Academy
SPARKS ACADEMY
Online Test Series
8190879379 Chennai

MCQ - Mechanical TNPSC JTO
JTO - 542 - Mechanic Electric Vehicle - 542 - Unit III Electrical Circuits and Test their Parameters

51)   

Thermocouples work on the principle of:

A.
B.
C.
D.
Answer: B
52)   

A thermistor is a type of:

A.
B.
C.
D.
Answer: B
53)   

Thermistors generally show:

A.
B.
C.
D.
Answer: C
54)   

Which device converts heat directly into electricity?

A.
B.
C.
D.
Answer: C
55)   

Thermocouples are widely used in:

A.
B.
C.
D.
Answer: C
56)   

Photovoltaic cells convert:

A.
B.
C.
D.
Answer: C
57)   

Main material used in solar cells is:

A.
B.
C.
D.
Answer: C
58)   

Electrochemical energy is used in:

A.
B.
C.
D.
Answer: C
59)   

Which is an example of electrochemical cell?

A.
B.
C.
D.
Answer: C
60)   

Lead-acid batteries produce electricity using:

A.
B.
C.
D.
Answer: B
61)   

Piezoelectric devices generate electricity through:

A.
B.
C.
D.
Answer: C
62)   

Electromagnetic induction occurs when:

A.
B.
C.
D.
Answer: C
63)   

Faraday’s law is related to:

A.
B.
C.
D.
Answer: C
64)   

A relay works based on:

A.
B.
C.
D.
Answer: B
65)   

Which device uses a solenoid to operate?

A.
B.
C.
D.
Answer: B
66)   

Transformer works on:

A.
B.
C.
D.
Answer: D
67)   

In a transformer, the primary winding is connected to:

A.
B.
C.
D.
Answer: C
68)   

Stator in a motor is:

A.
B.
C.
D.
Answer: B
69)   

Rotor in a motor rotates due to:

A.
B.
C.
D.
Answer: B
70)   

Transformers operate only on:

A.
B.
C.
D.
Answer: B
71)   

AC stands for:

A.
B.
C.
D.
Answer: A
72)   

DC stands for:

A.
B.
C.
D.
Answer: C
73)   

In an AC waveform, one complete wave is called:

A.
B.
C.
D.
Answer: D
74)   

The frequency of AC in India is

A.
B.
C.
D.
Answer: C
75)   

RMS value of AC is:

A.
B.
C.
D.
Answer: B