• 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
If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is

 maximum
All of these
 zero
 minimum

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A commutator in DC machines can 1. provide half-wave rectification 2. Provide full-wave rectification 3. convert ac to dc 4. Convert dc to ac 5. provide controlled full-wave rectification From these, the correct answer is

 2, 3, 4
 2, 3 ,5
 1, 2, 3
 2, 3, 4, 5

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be

 25 W.
 30 W.
 28 W.
 36 W.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A short circuit test on a transformer gives

 copper loss at over load.
  copper loss at any load.
 copper loss at half load.
 copper loss at full load.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 - Φ, 6 pole, 50 Hz IM has a rotor speed of 987 rpm find rotor frequency?

 0.70 Hz.
 0.75 Hz.
  0.65 Hz.
  60 Hz.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The stator frame in an induction motor is used to

  protect the whole machine.
  hold armature stamping in position.
  provide return path for the flux.
  ventilate the armature.

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
↑