• 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 DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be

 PN/3000.
 PN/120.
 PN/2.
 PN/60.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following voltage regulation method is accurate ?

 Synchronous impedance method
 ZPF method
 MMf method
 American standard association method

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
With the increases in field excitation of a DC generator, its generated emf

  decreases.
  remains constant.
 increases.
  increases upto a limit and then remains almost constant.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
What is/are the necessary conditions for parallel operation of alternators?

 Both 1and 2
 Terminal voltage is same
 Frequency should be same
 Speed of alternators should be same

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Example of double excited machine is

 DC Shunt Motor
 Both are correct.
None of these
 Synchronous motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to

 Ia2
 I/Ia2
 Ia
 1/Ia

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
↑