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MCQ - Mechanical TNPSC JTO
JTO - 542 - Mechanic Electric Vehicle - 542 - Unit V Electric Vehicle Components and Comparison

76)   

Which of the following devices is used in chopper circuits?

A.
B.
C.
D.
Answer: D
77)   

Efficiency of chopper-controlled DC drive is:

A.
B.
C.
D.
Answer: B
78)   

The main aim of a control system in EVs is to:

A.
B.
C.
D.
Answer: B
79)   

Chopper amplifier provides:

A.
B.
C.
D.
Answer: C
80)   

One advantage of chopper drive in EVs is:

A.
B.
C.
D.
Answer: C
81)   

BLDC motor means:

A.
B.
C.
D.
Answer: A
82)   

BLDC motors do not have:

A.
B.
C.
D.
Answer: B
83)   

What controls the switching in a BLDC motor?

A.
B.
C.
D.
Answer: C
84)   

Main advantage of BLDC motor:

A.
B.
C.
D.
Answer: C
85)   

In BLDC motor, back EMF is:

A.
B.
C.
D.
Answer: A
86)   

BLDC motors are commonly used in:

A.
B.
C.
D.
Answer: C
87)   

Hall sensors in BLDC motors are used for:

A.
B.
C.
D.
Answer: B
88)   

Stator of BLDC motor is usually

A.
B.
C.
D.
Answer: D
89)   

BLDC motor efficiency is generally:

A.
B.
C.
D.
Answer: C
90)   

The main feature of BLDC motor is:

A.
B.
C.
D.
Answer: C
91)   

Speed control of BLDC motor is achieved through:

A.
B.
C.
D.
Answer: C
92)   

Which method is commonly used to control BLDC speed?

A.
B.
C.
D.
Answer: C
93)   

In BLDC motors, torque is controlled by:

A.
B.
C.
D.
Answer: B
94)   

When load increases, motor speed:

A.
B.
C.
D.
Answer: C
95)   

Higher the load, higher the:

A.
B.
C.
D.
Answer: B
96)   

A sudden drop in speed in BLDC motor could be due to:

A.
B.
C.
D.
Answer: C
97)   

Motor efficiency is calculated as:

A.
B.
C.
D.
Answer: A
98)   

Which factor reduces motor efficiency?

A.
B.
C.
D.
Answer: B
99)   

Speed and torque are:

A.
B.
C.
D.
Answer: A
100)   

BLDC motor losses include:

A.
B.
C.
D.
Answer: D