• 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 DC generator without commutator is a

 AC generator
 DC generator
 DC motor
 induction motor

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following represents the pitch factor?

 Cos (α/2)
 sin (α/2)
 Cos α²
 Cos α

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a 3-phase induction motor, torque and supply voltage are related as

 T ∝ 1/V²
 T ∝ V
 T∝ V²
 T ∝ 1/V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by 5%, the speed of the motor will

 Depends on other factor.
 Reduce by 5%.
  Increase by 5%.
 Remain unchanged.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be

  more than core loss.
 equal to core loss.
 less than core loss.
 zero.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then

 E ∝ f/φ
 E ∝ φ/f
 E ∝ φf
 E ∝ 1/(φf)

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
↑