• 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 maximum flux density is not constant, the eddy current loss varies as

 f
 f²
 V
 V²

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Maximum allowable acidity level of power transformer insulating oil is generally taken as

 2 mg of KOH / gm.
  0.3 mg of KOH / gm.
  1 mg of KOH / gm.
 0.5 mg of KOH / gm.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The sparking at the the brushes, in a DC machines is due to

  reactance voltage.
 high resistance of carbon brushes.
 armature reaction.
 presence of commutator.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________.

 decreased.
 kept constant to certain value.
 increased.
  remains unchanged.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Winding conductors of an electrical power transformer are mainly insulated by

 rubber insulation.
  paper insulation.
 cotton insulation.
 wooden insulation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of

 100 V.
 400 V.
 800 V.
 200 V.

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
↑