• 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
Reactive power generated or delivered significantly depends on

 load angle.
 frequency.
 both 1 and 2.
 excitation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the speed of a dc motor increases with load torque, then it is a

 differentially compounded motor
 series motor
 comulatively compounded motor
 permanent magnet motor

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A dc series motor driving and electric train faces a constant power load. It is running at rated speed and rated voltage. If the speed has to be brought down to 0.25 p.u. the supply voltage has to be approximately brought down to

  0.75 p.u
  0.25 p.u
  0.125 p.u
  0.5 p.u

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a 3 - Φ, 4 pole, 50 Hz IM rotating at full load speed of 1440 rpm, calculate speed of rotor field with respect to rotor structure and stator structure respectively?

 60, 1440.
  60, 1500.
 50, 1500.
 1440, 1500.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Maximum power will be developed when back emf is

 half of the supply voltage.
 equal to supply voltage.
All of these
 double the supply voltage.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following motor is expensive for same Kw output rates?

 DC Shunt Motor
 Synchronous motor.
 Induction motor.
 AC single phase motor.

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
↑