• 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 an induction motor, what is the ratio of rotor input to rotor copper loss?

 1/S
 1-S
 1/(1-S)
 S

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The slip of an induction motor during DC rheostatic braking is

 1 - s.
  2 - s.
 2 + s.
  s.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be

 1.8 9 Ω
 1.79 Ω
 3.1 Ω
 2 .1 Ω

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In DC generators brushes are used for

 collecting of current without any sparkings
 convert ac armature current in to dc
 collecting of voltage
 reduce eddy current loss

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The armature resistance of the dc motor is generally of the range

  0.5 ohm.
  0.1 ohm.
 50 ohm.
 100 ohm.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The shaft of induction motor should be

  hollow.
  any of these.
  stiff.
  flexible.

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
↑