• 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
When flux density is constant in a transformer, hysteresis loss varies as

 f
 V²
 f²
 V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A simple method of increasing the voltage of a DC generator is to

 increase the number of turns in field coil.
 increase the source frequency.
 increase the number of turns in armature coil.
  increase the speed of shaft rotation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Direct-on-line (DOL) starters are not suitable for starting large DC motors, because

 the starting torque becomes low.
 the motor may run away.
 the starting current will be enormously high.
 the motor may not start.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection.

 100 V.
 50 V.
 399 V.
  230.2 V.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In an auto-transformer, power is transferred through

None of these
 induction process only.
 conduction process only.
 both A and B.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following rotor requires damper winding?

 Salient pole rotor.
 Both type rotor.
None of these
 Cylindrical rotor.

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
↑