• 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
Brushes are always placed on--------------- , in order to achieve sparkles commutation?

 GNA
 either GNA or MNA
None of these
 MNA

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The leakage reactance of a 3-phase alternator is determined by performing

 short circuit and slip tests.
 zero power factor and slip tests.
 open circuit and zero power factor tests.
 open circuit and short circuit tests.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The volt-ampere euation for a long-shunt compound motor is given by

 Vt= Ea– Iara
 Vt= Ea + Iara
 Vt = Ea + Iara+ ILrs
 Vt = Ea + Ia(ra + rs)

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If Pi and Pc represent core and full load copper loss respectively, the maximum KVA delivered to load corresponding to maximum efficiency is equal to rated KVA is

 Pc/Pi
 Pi/Pc
 √(Pi/Pc)
 (Pi/Pc)2

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Hopkinson test is conducted under which of the following condition?

 half load
 any of the above
 full load
 no load

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then

 I1 = KI2.
 I1 = KI2 + Iw.
 I1 = KI2 + Iμ.
  I1 = KI2 + Iw + Iμ.ok

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
↑