• 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 slot edges in a DC machine are made of

  Fibre.
 Mild steel.
 Cast iron.
 Silicon steel.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A self-excited shunt generator fails to build up, because 1. the field circuit is open 2. The armature circuit is open 3. the residual magnetism is absent 4. The direction of rotation is wrong From these, the correct answer is

 1, 3
 3 only
 1, 2 and 3
 1, 2, 3 and 4

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the

 motor armature terminal.
 generator armature terminal.
 generator field terminal.
 motor field terminal.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Slip rings of an induction motors are made of

  aluminium.
  stainless steel.
  phosphor bronze.
  carbon.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as

  crawling.
  cogging.
  air gap.
  relative speed.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The output power of a dc motor is given by

  EIa.
  none of these.
  EbIa.
  EbIa2.

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
↑