• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Three Phase Induction Motors

Three Phase Induction Motors
At no load the rotor core loss of a 3 phase induction motor is

Practically zero
None of the listed here
Large
Small

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
The approximate efficiency of a 3-phase , 50 Hz, 4 pole induction motor running at 1350 rpm is ______

65%
40%
90%
None of the listed here

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
If an induction motor is running at slip S, then rotor output is ______

S × rotor input
(1-S) × rotor input
(S-1) × rotor input
(1+S) × rotor input

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
The rotor winding of a 3phase wound rotor induction motor is generally _______ connected.

Star
Delta
Partly star and partly delta
None of the listed here

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current.

15 to 20 %
5%
30 to 50%
10 to 15%

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
The efficiency of an induction motor can be expected to be nearly

60 to 90%
80 to 90%
95 to 98 %
99%

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Three Phase Induction Motors

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑