DC Generators MCQ Questions Answers Electrical Engineering

DC Generators MCQ Questions Answers – Electrical Engineering

Direct current (DC) generators are fundamental devices that convert mechanical energy into electrical energy through the process of electromagnetic induction. These machines have played a pivotal role in the development of electrical power systems and continue to be essential components in various applications. In this article, we will explore the basics of DC generators through a series of Multiple Choice Questions (MCQs) along with detailed answers.


1) The brush voltage drop in a d.c. machine is about …………

a) 0.1 V

b) 10 V

c) 2 V

d) 20 V

View Answer
Option – c)

2) Small d.c. machines generally have ………poles.

a) 4

b) 6

c) 2

d) 8

View Answer
Option – c)

3) …….. d.c. machines are most common.

a) 2-pole

b) 4-pole

c) 6-pole

d) 8-pole

View Answer
Option – b)

4) A triplex wave winding will have ……… parallel paths.

a) 6

b) 2

c) 4

d) none of the above

View Answer
Option – a)

5) High-voltage d.c. machines use …….. winding.

a) lap

b) wave

c) either lap or wave

d) none of the above

View Answer
Option – b)

6) The yoke of a d.c. machine carries ,…….. pole flux.

a) the

b) one-half of the

c) two times the

d) none of the above

View Answer
Option – b)

7) The commutator pitch for a simplex lap winding is equal to …….

a) number of poles of the machine

b) pole pairs

c) 1

d) none of the above

View Answer
Option – c)

8) The greatest percentage of heat loss in a d.c. machine is due to ……….

a) eddy current loss

b) hysteresis loss

c) copper loss

d) frictional loss

View Answer
Option – c)

9) The armature conductors of 6-pole, lap wound d.c. generator are divided into

a) 2 parallel paths

b) 4 parallel paths

c) 3 parallel paths

d) 6 parallel paths

View Answer
Option – d)

10) Hysteresis loss in a d.c. machine is directly proportional to ……….

a) speed

b) (speed)2

c) (speed)6

d) none of the above

View Answer
Option – a)