Explore topic-wise MCQs in Electric Drives Questions and Answers.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Calculate the average value of thyristor current in 3-Φ Full wave converter for the load current=729 A and α=3°.

A. 254 A
B. 285 A
C. 247 A
D. 243 A
Answer» E.
Discussion
2.

Calculate the r.m.s value of thyristor current in 3-Φ Full wave converter for the load current=2 A and α=59°.

A. 1.15 A
B. 2.55 A
C. 2.07 A
D. 2.89 A
Answer» B. 2.55 A
Discussion
3.

Calculate the phase voltage for 3-∅ 120° VSI if the value of DC supply is 78 V.

A. 30.45 V
B. 15.18 V
C. 31.84 V
D. 48.15 V
Answer» D. 48.15 V
Discussion
4.

Calculate the line voltage for 3-∅ 120° VSI if the value of DC supply is 96 V.

A. 68.25 V
B. 67.87 V
C. 66.25 V
D. 62.14 V
Answer» C. 66.25 V
Discussion
5.

Calculate the rotational kinetic energy of the object using the data: I=5 Kg-m2, ω=25 rad/sec.

A. 1.46 KJ
B. 1.56 KJ
C. 2.58 KJ
D. 3.15 KJ
Answer» C. 2.58 KJ
Discussion
6.

Calculate the maximum fluctuation of speed using the data: Vmax=23 m/sec, Vmin=13 m/sec.

A. 12
B. 10
C. 14
D. 15
Answer» C. 14
Discussion
7.

Calculate the coefficient of fluctuation of speed using the data: Vmax(Fluctuation)=25 m/sec, Vmean=12 m/sec.

A. 2.08
B. 2.16
C. 2.34
D. 2.74
Answer» B. 2.16
Discussion
8.

Full form of KERS is ___________

A. The kinetic energy recovery system
B. The kinetic ever recovery system
C. Kin ever recovery system
D. The kinetic energy recovery store
Answer» B. The kinetic ever recovery system
Discussion