Explore topic-wise MCQs in Electric Drives.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives knowledge and support exam preparation. Choose a topic below to get started.

1.

Full form of ADC is ___________

A. Analog to Digital converter
B. Discrete to Analog converter
C. Analog to Digital converter
D. Discrete to Avalanche converter
Answer» D. Discrete to Avalanche converter
Discussion
2.

Full form of DAC is ___________

A. Digital to Analog converter
B. Discrete to Analog converter
C. Digital to AC converter
D. Discrete to Avalanche converter
Answer» B. Discrete to Analog converter
Discussion
3.

In single phase RLE load, calculate the Peak inverse voltage using the data: (Vs)r.m.s=89 V, f=50 Hz, E=440 V.

A. 521.2 V
B. 527.8 V
C. 597 V
D. 529 V
Answer» D. 529 V
Discussion
4.

Calculate the PIV for the Full-wave bridge rectifier if the peak value of the supply voltage is 230.

A. 324.4 V
B. 325.2 V
C. 524.4 V
D. 626.8 V
Answer» B. 325.2 V
Discussion
5.

Full form of PIV.

A. Peak inverse voltage
B. Peak insert voltage
C. Paas Inverse volatile
D. Peak insert volatile
Answer» B. Peak insert voltage
Discussion
6.

In single phase RLE load, calculate the angle at which conduction starts using the data: (Vs)=14sin( t), f=50 Hz, E=10 V.

A. 45.58
B. 46.26
C. 47.26
D. 49.56
Answer» B. 46.26
Discussion
7.

In single phase RLE load, calculate the voltage across the thyristor when current decays to zero using the data: (Vs)r.m.s=340 V, f=50 Hz, R=2 , E=150 V, =160 .

A. 45.89 V
B. 74.45 V
C. 54.85 V
D. 84.48 V
Answer» C. 54.85 V
Discussion
8.

Displacement factor depends upon the shape of the waveform.

A. True
B. False
Answer» B. False
Discussion
9.

Calculate the value of the Input power factor using the data: Fundamental displacement factor=.96, Distortion factor=.97.

A. .93
B. .84
C. .48
D. .89
Answer» B. .84
Discussion
10.

For highly inductive load current remains continuous.

A. True
B. False
Answer» B. False
Discussion
11.

Calculate the value of the fundamental displacement factor for 1- Full wave semi-converter if the firing angle value is 0o.

A. 1
B. .8
C. .4
D. .2
Answer» B. .8
Discussion
12.

Calculate the I0 r.m.s for Single-phase Half Wave rectifier for R-L load (Highly inductive) using the data: Vm=110 V, =16 , =31 , R=1 .

A. 4.56 A
B. 1.82 A
C. 4.81 A
D. 9.15 A
Answer» C. 4.81 A
Discussion
13.

Calculate the I0 avg for Single-phase Half Wave rectifier for R-L load using the data: Vm=56 V, =15 , =30 , R=2 .

A. .56 A
B. .44 A
C. .26 A
D. .89 A
Answer» B. .44 A
Discussion
14.

Calculate the V0 avg for Single-phase Half Wave rectifier for R-L load using the data: Vm=24 V, =30 , =60 .

A. 1.39 V
B. 8.45 V
C. 4.55 V
D. 1.48 V
Answer» B. 8.45 V
Discussion
15.

Calculate the value of the conduction angle for R-L load if the value of and are 19 and 29 .

A. 10
B. 70
C. 30
D. 80
Answer» B. 70
Discussion