• 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 emf induced in the dc generator armature winding is

 AC
None of these
 AC and DC
 DC

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The fall in speed of the DC generator due to increase in load can be corrected by

  increasing the excitation.
 cooling the armature.
  increasing the input to the prime mover.
  reducing the load voltage.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In 3 - Φ induction motor some times copper bars are placed deep in the rotor to

  improve starting torque.
  improve power factor.
  improve efficiency.
  reduce copper loss.

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.
 (1/2)Fmax.
 3Fmax.
  (3/2)Fmax.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC compound motor the field regulator is provided to

 control the armature flux.
 control the field flux.
 demagnetize the field partially.
 limit the armature current.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The DC generator runs at a speed of 1000 rpm and flux per pole is 0.2 Wb, number of poles are 2 the winding is wave wound and having 480 conductors. The critical speed is 1200 rpm. Then the generated emf ( Eg )

  0 Volt.
 2000 Volt.
 1600 Volt.
 1500 Volt.

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
↑