Explore topic-wise MCQs in Electrical Machines Questions and Answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

If the students give a forward shift of 10° to the dc generator, then it _________

A. reduces flux per pole
B. improves flux per pole
C. increases the flux density in core
D. none of the mentioned
Answer» B. improves flux per pole
Discussion
2.

For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.

A. 2.788
B. 3.038
C. 2.688
D. 2.588
Answer» B. 3.038
Discussion
3.

The direct-on-line starter is used to start a small dc motor because it limits initial current drawn by armature circuit.

A. True
B. False
Answer» C.
Discussion