• 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 a 3-phase induction motor, torque and supply voltage are related as

 T ∝ 1/V
 T ∝ V
 T ∝ 1/V²
 T∝ V²

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Resistance commutation is used generally in case of

 DC machines bellow 5 kW.
 DC machines above 10 kW.
  fractional kW DC machines.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The direction of generated emf in the armature coil of a DC machine is 1. the same as that of the current in a generator 2. the same as that of the current in a motor 3. opposite to that of the current in a generator 4. opposite to that of the current in a motor From these, the correct answer is

 2, 3
 1, 4
 1, 3
 2, 4

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For higher values of armature, the speed of a DC series motor is

 Proportional to armature current.
 Inversely proportional to armature current.
 Proportional to the square of armature current.
  Constant.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The shaft of induction motor should be

  any of these.
  flexible.
  hollow.
  stiff.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
To avoid formation of grooves in the commutator

  brush position has no effect on the commutator grooving.
 the brushes of same polarity should track each other.
None of these
  the brushes of opposite polarity should track each other.

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
↑