• 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 frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is

  50 Hz.
  16.67 Hz.
  60 Hz.
  25 Hz.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A.

 220 V.
 280 V.
 150 V.
 240 V.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 - Φ, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss?

 1920 Watt.
  1960 Watt.
 1800 Watt.
  980 Watt.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Ward-Leonard control is basically a ___________ control method.

 Armature voltage control.
 Field control.
 Armature resistance control.
 Field diverter control.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a standard frequency the machine operates at a particular speed known as

 synchronous speed.
 normal speed.
 any of the above.
 slip speed.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited?

 30°.
 24°.
 45°.
  10°.

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
↑