• 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
Which of the following represents the pitch factor?

 Cos (α/2)
 Cos α²
 sin (α/2)
 Cos α

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For high current and low voltage rating which winding is employed to DC machine?

 Lap winding.
 No wave and lap winding.
 Both wave and lap winding.
 Wave winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be

 53+j85 ohms
 3.05+j5.08 ohms
 8+j13 ohms
 3.5+j5.8 ohms

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is

 Fmax.
 3Fmax.
 (1/2)Fmax.
  (3/2)Fmax.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a dc machine, 1. physically, the brush axis is along the direct axis 2. physically, the brush axis is along the interpolar axis 3. schematically, the brush axis is along the direct axis 4. schematically, the brush axis is along the quadrature axis 5. armaturemmf is directed along the brush axis From these, the correct statements are

 2, 3, 5
 2, 4, 5
 1, 4,5
 1 , 3, 5

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A triangular mmf wave is produced in the air gap of an electric machine. Such wave is produced by

 stator of a dc machine.
 rotor of an synchronous machine.
 stator of a induction machine.
 rotor of a dc machine.

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
↑