• 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
Flux density under trailing pole tips in case of generator will

None of these
 increase
 decrease
 either increase or decrease

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is

 14%.
 0%.
 7%.
  8.9%.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is

  0.02 pu.
 0.01 pu.
 0.16 pu.
  0.08 pu.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In speed control of DC shunt motor by varying field flux, what may be the value of field regulator?

 100 ohm
 2 ohm.
 0.2 ohm
 10 ohm

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
To avoid formation of grooves in the commutator

 the brushes of same polarity should track each other.
  brush position has no effect on the commutator grooving.
  the brushes of opposite polarity should track each other.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be

 75 rpm
 3000 rpm
 375 rpm
 1500 rpm

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
↑