• 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
The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is

 400 A.
 44 A.
 440 A.
 40 A.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case of DC Shunt Motor electromagnetic torque developed is

 Proportional to the square of armature current.
 Inversely proportional to the armature current.
 Proportional to the armature current.
 None of above.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Maximum power developed by a synchronous motor depends on

 supply voltage, load angle and excitation
 supply voltage and excitation
 supply voltage and load angle
 excitation and load angle

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Ward Leonard control is provides speed control

  In both direction.
  Below rated speed.
  In one direction only.
  Above rated speed.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 230 V, 50 Hz, 4 pole single phase induction motor is rotating in the clockwise ( forward ) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8 Ω. Then the effective rotor resistance in the backward branch of the equivalent circuit will be

  4 Ω.
 8 Ω.
  2 Ω.
 10 Ω.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the source voltage of a DC motor is increased, which of the following will decrease?

  Full load current.
 Operating speed.
 Starting torque.
 Starting torque, operating speed, full load current.

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
↑