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

This section includes 12 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 compensator rating required for cos(Φ)=.35.

A. .936 P.U
B. .154 P.U
C. .481 P.U
D. .289 P.U
Answer» B. .154 P.U
Discussion
2.

Calculate the work done in stretching the wire of volume=12 m3 and the values of stress and strain are 28 N/m2 and 7.

A. 1176 J
B. 1544 J
C. 2542 J
D. 8788 J
Answer» B. 1544 J
Discussion
3.

Calculate the value of α for β=.2.

A. .85
B. .15
C. .23
D. .16
Answer» E.
Discussion
4.

Calculate the value of Vpeak if crest factor=5 and Vr.m.s=4 V.

A. 20 V
B. 30 V
C. 40 V
D. 50 V
Answer» B. 30 V
Discussion
5.

In a transistor, β=75 and Ic=53 mA. The value of IB is _____________

A. .70 mA
B. .25 mA
C. .26 mA
D. .15 mA
Answer» B. .25 mA
Discussion
6.

In a transistor, IB=2 mA and Ic=3 mA. The value of β is _____________

A. 1.5
B. 5.8
C. 9.6
D. 3.5
Answer» B. 5.8
Discussion
7.

Calculate the value of β for α=.8.

A. 2
B. 8
C. 3
D. 4
Answer» E.
Discussion
8.

Choose the correct relationship between β and ∝.

A. β=∝/(1-∝)
B. β=1/(1+∝)
C. β=1/(1-∝)
D. β=1/(∝)
Answer» B. β=1/(1+∝)
Discussion
9.

In a transistor, Ic=47 mA and IE=53 mA. The value of β is _____________

A. 8.48
B. 7.83
C. 9.26
D. 3.15
Answer» C. 9.26
Discussion
10.

Calculate the value of ∝ using the data: Ic=18 mA, IE=17 mA.

A. 1.05
B. 1.47
C. 1.89
D. 2.55
Answer» B. 1.47
Discussion
11.

Calculate the current gain using the data: Ic=25 mA, IB=10 mA.

A. 3.5
B. 2.5
C. 1.4
D. 7.8
Answer» C. 1.4
Discussion
12.

Calculate the collector current using the data: IE=14 mA, IB=7 mA.

A. 7 mA
B. 8 mA
C. 9 mA
D. 10 mA
Answer» B. 8 mA
Discussion