• 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
Eg (generated emf) and Eb (back emf) both are

 changes.
 same.
 different.
 none of above.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 100/10, 50 VA double winding transformer is converted to 100/110 V auto transformer. The rating of auto transformer is

 550 VA
 110 VA
 500 VA
 100 VA

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Regenerative braking is not found in which motor?

 DC compound.
 DC shunt.
 Induction motor.
  DC series.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is

 115 V
 200 V
 460 V
 230 V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as

 T is independent of P.
 T ∝ √P.
 T2 ∝ P3.
 T ∝ P.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A large series motor is never started without some mechanical load on it because otherwise it will

 open fuse or circuit breaker.
 develop excessive speed and damage itself.
 produce sparking at brushes.
 draw too much current.

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
↑