• 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 an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses?

 2KW
 0.5Kw
 1.5KW
 3KW

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
When the armature current of 5 Amp is flowing through the dc motor the torque produced is 47 Nm. Keeping the speed constant if the armature current is increased to 7 amp, calculate the new torque. Assume losses to be constant.

  65.8 Nm.
 38.5 Nm.
 74 Nm.
 27.73 Nm .

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The armature core of a DC machine is laminated to minimise

 hysteresis loss
 temperature rise
 eddy-current loss
 mechanical loss

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
which of the following type of brush and their application is/are correct

 copper graphite → low voltage high current density
All of these
 carbon brush → normal ratings
 electro graphite → large ratings

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The starting resistance of DC motor is generally

 Infinitely large.
 around 500 ohms.
 1000 ohms.
  Low.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case of a conductively compensated DC series motor, the compensating winding is provided

  In series with the armature winding.
 In parallel with the field winding.
 As a separate unit.
 In parallel with the armature 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
↑