• 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
If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be

 2000 rpm
 250 rpm
 500 rpm
 1000 rpm

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A three phase 400 V, 6 pole, 50 Hz, squirrel cage induction motor is running at a slip of 5%. The speed of stator magnetic field with respect to rotor magnetic field and speed of rotor w.r.t stator magnetic field are

 1000 rpm, 950 rpm.
 zero, 950 rpm.
 1000 rpm, - 50 rpm.
 zero , - 50 rpm.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Direction of rotation of DC motor is reversed by

 Reversing supply connection.
 Adding resistance to field circuit.
 Reversing armature connection or field connection.
 Interchanging armature and field connection.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which motor used in Lathe machine?

  D.C. shunt motor.
  D.C . series motor.
  D.C. cumulative compound motor.
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be

 2.7 mWb.
 1.4 mWb.
 3.5 mWb.
  1.2 mWb.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

  43 Amp.
  33.33 Amp.
 29 Amp.
 44.47 Amp.

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
↑