• 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
For higher efficiency of 3-phase induction motor, the slip should be

Large
1
Very large
As small as possible

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
An induction motor with 1000 r.p.m. speed will have

6 poles
2 poles
8 poles
4 poles

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
The crawling in an induction motor is caused by

Low voltage supply
High loads
Harmonics developed in the rotor
Improper design of machine

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
If a 3 phase induction motor is running at a slip S, then approximate efficiency of the motor is ______

None of the listed here
S-1
1-S
1+S

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
Very large 3-phase induction motors (greater than 25 HP) are started _____

None of the listed here
Star-delta starting
By auto transformer starting
Direct on line

ANSWER DOWNLOAD EXAMIANS APP

Three Phase Induction Motors
A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be

200 Hz
50 Hz
20 Hz
2 Hz

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
↑