• 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 DC machines shape of net flux density is?

 peaky in nature
 saddle shape
 sine wave
 flat tapped or trapezoidal

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC generator sparking between brushes and commutator surface may be due to

  too rapid reversal of current.
  under commutation.
 over commutation.
  any of the above.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The leakage reactance of a 3-phase alternator is determined by performing

 short circuit and slip tests.
 zero power factor and slip tests.
 open circuit and short circuit tests.
 open circuit and zero power factor tests.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
At stand still condition the value of slip is

 finite value
 1
 0
 infinite value

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each.

 133.22 N-m
 234.76 N-m.
 266.20 N-m.
 cant be determined.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following represents the pitch factor?

 Cos α
 Cos (α/2)
 Cos α²
 sin (α/2)

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
↑