• 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
What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip?

 2.5Hz
 50Hz
 2HZ
 1 Hz

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-

 2, 3 and 4.
 2 and 4.
  1, 2 and 3.
 1, 3 and 4.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In DC generators, the residual magnetism is of the order of

  20 %.
  15 %.
 10 %.
  2.5 %.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will

 increase.
 remain unaltered.
 become execessively high.
 decrease.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
An induction motor has a rotor resistance of 0.002 Ω / phase. If the resistance is increased to 0.004 Ω / phase then the maximum torque will

 reduced to half
 remain unaltered
 increase by 200%
 increase by 100%

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following windings are necessary in case of all dc machines?

 open type winding
 wave winding
 lap winding
 closed winding

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
↑