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

Electrical Machines

Electrical Machines
A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value?

 0.2
 0.4
 0.04
 0.02

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will

 remain unchanged.
 increase by 5 %.
 reduce by 5 %.
 depend on other factors.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which DC motor will have least percentage increase of input current, for the same percentage increase in the torque

 Compound Wound DC Motor
 DC Series Motor
 DC Shunt Motor
 Separately Excited DC Motor

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase

 machine A
 none of these
 any of the two machines
 machine B

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Capacitor in split phase induction motor is used to

 improve the power factor.
 improve the starting torque.
 reduce the harmonics.
 start the motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called

  cogging.
  resonance.
  harmonics.
  crawling.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

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
↑