• 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 field divertor resistance for a DC series motor is of order of

 50 Ω
 10 Ω
 0.1 Ω
 100 Ω

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series

 56.91 V.
 86.91 V.
 76.91 V.
  66.91 V.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC generator can be considered as

 rectifier.
 power pump.
 rotating amplifier.
 prime mover.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
What is the mechanical power developed by a DC series motor is maximum?

 Back emf is equal to zero.
 None of above.
 Back emf is equal to half the applied voltage.
 Back emf is equal to applied voltage.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
1 KVA, 230 V, 50 Hz, single phase transformer has an eddy current loss of 30 watts. The eddy current loss when the transformer is excited by a dc source of same voltage will be

 30 W
 zero watt
 less than 30 W
 more than 30 W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 220 V DC machine has an armature resistance 1Ω. If the full load current is 20 A, the difference of induced voltage and generator is

 0 V.
  40 V.
 60 V.
 20 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
↑