• 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
A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms.

  0.573.
 0.512.
 0.649.
 0.443.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Dummy coils are used for

 mechanical balancing.
 reducing armature reaction.
All of these
 increasing efficiency.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a dc machine 4 pole lap winding is used. The number of parallel paths are?

 8
 1
 2
 4

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The field divertor resistance for a DC series motor is of order of

 100 Ω
 10 Ω
 50 Ω
 0.1 Ω

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Select the motor that should not be started on no load?

 Brushless DC motor.
 Shunt motor.
 Compound motor.
  Series motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be

None of these
 oscillating
 steady and unidirectional
 pulsating and unidirectional

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
↑