DC Motors MCQ - Electrician (Set-1) with Answers

DC Motors MCQ - Electrician (Set-1) with Answers

21) When an electric train moves down a hill the d.c. series motor then acts as :

Answer is:

d.c. series generator

22) Which of the following motors is suitable for high starting torque ?

Answer is:

Series motor

23) Which of the following methods is most economical for finding the no-load losses of a long shunt d.c. motor ?

Answer is:

Swinburne's test

24) The rated speed of a given shunt motor is 1050 r.p.m. To run this motor at 1200 r.p.m., which of the following speed control scheme will be suitable ?

Answer is:

Field resistance control

25) Which of the following statement is more appropriate ?

Answer is:

Compound motor is suitable for fly-wheel drive

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