• 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
The wattage rating of a ceiling fan motor will be

 10 - 20 W.
 250 - 500 W.
 200 - 250 W.
  50 - 150 W.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC generator, the ripples in the direct emf generated are reduced by employing

  carbon brushes.
  commutator with large number of segments.
 graphite brushes.
  equalizer rings.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
During hunting of a synchronous motor

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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The shaft of induction motor may be unbalanced due to

  poor lubrication.
  uneven air gap.
  overheating of winding.
  overload.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Regenerative braking is not found in which motor?

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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm

 0.5Ω.
 1Ω.
 0.25Ω.
  0.23Ω.

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
↑