• 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
Hunting phenomenon is observed in which motor?

  Synchronous motor.
 Induction motor.
 Both A and C.
 DC motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
During hunting of a synchronous motor

  negative phase sequence currents are generated.
  field excitation increases.
  harmonic are developed in the armature circuit.
  damper bar develops torque.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

 -1.92
 1.92
 0.08
 -0.08

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm?

 +3.33%
 +3%
 -3%
 -3.33%

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Number of tappings for each equalizer ring is equal to

  number of poles.
  number of commutator segments.
  number of parallel paths.
  number of pole pairs.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to

  very low
  less than one.
  greater than one.
  approx to one.

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
↑