• 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 transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be

 25 W.
 30 W.
 28 W.
 36 W.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A cumulatively compounded dc motor delivers rated load power at rated speed. If the series field is short-circuited, then

 Ia remains constant but ωm increase
 Ia increases and ωm decreses
 both armature current Ia and speed ωm increase
 both decrese

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field

 to an AC source.
  to a DC source.
 to earth.
 in reverse.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The output power indicated on the name plate of any motor is always the

 Power drawn in KW.
 Output power at the shaft.
 Power drawn in KVA.
 Gross power.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which type of bearing is provided in small induction motors to support the rotor shaft?

  Bush bearings.
  Cast iron bearings.
  Ball bearings.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The armature of DC machine is made of silicon steel lamination to

 reduce both eddy current and hysteresis loss.
 reduce eddy current loss only.
 reduce hysteresis loss only.
 increase the permeability.

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
↑