• 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
Induction motors have the advantage of

  all of below.
  less maintenance.
  less cost.
  simple in construction.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which one of the following statement is correct ? In an induction motor if the air gap is increased then

 its speed will reduce
 its speed will increase
 its efficiency will improve
 its power factor will reduce

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The back emf produced in a dc motor depends on

  P.
  P and Z.
  Z.
  none of these.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In dc machine armature windings are placed on rotor because of the necessity for

 electromechanical energy conversion.
 generation of voltage.
 development of torque.
 commutation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

 1.06
 0.95
 0.96
 0.87

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The power factor of squirrel cage induction motor is

 low at rated load only
 low at heavy loads only
 low at light loads only
 both A and B

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
↑