• 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
In a transformer which of the following losses are zero?

 Copper loss
 Iron loss
All of these
 Rotational loss

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Compensating winding are used to rectify the flux density waveform at

 interpole region.
  region under main pole.
 throughout the air gap.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Speed of DC motor can be controlled by varying

 all of these.
 resistance of armature culture.
 its flux oer pole.
 applied voltage.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In electric locomotive which of the following motor are used ?

  DC series motor.
  Shunt motor.
  Synchronous motor.
  Separately compound motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In dc machines, the field-flux axis and armature-mmf axis are respectively along

 quadrature axis and interpolar axis
 quadrature axis and direct axis
 direct axis and interpolar axis
 direct axis and indirect axis

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that

 Eb is unchanged, but Td is zero
 both Eb and Td are unchanged
 both Eb and Td are zero
 Eb is zero, but Td is unchanged

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
↑