www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
ITI
Electrician
Electrician Set-1
DC Motors
21

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 :

d.c. series motor

d.c. shunt motor

d.c. series generator

d.c. shunt generator

Answer is:

d.c. series generator

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

For more MCQ's Click Here

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

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

Shunt motor

Cumulative compound motor

Series motor

Compound motor

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 ?

Hopkinson's test

Swinburne's test

Retardation test

None of these

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 ?

Armature current resistance control

Field resistance control

Ward-Leonard control

None of these

Answer is:

Field resistance control

25) Which of the following statement is more appropriate ?

Shunt motor is suitable for electric trains

Series motor is suitable for machine tools

Series motor is suitable for belt driven machines

Compound motor is suitable for fly-wheel drive

Answer is:

Compound motor is suitable for fly-wheel drive

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

For more MCQ's Click Here