• 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
A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is

 100 Hz
 50 Hz
 25 Hz
 0 Hz

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The heat generated in the transformer is dissipated mainly by

  convection.
All of these
 conduction.
 radiation.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Addition of 0.3 % to 4.5 % silicon to iron

  reduces the saturation magnetization.
None of these
  increases the electrical resistivity of iron.
  increases the hysteresis loss.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 4 pole DC shunt generator having a wave winding supplies 50 lamps, each of 60 W at 120 V. The armature and field resistance are 0.2 Ω and 60 Ω respectively. The current in each armature conductor is

 27 A.
 11.5 A.
  13.5 A.
 23 A.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The direction of rotation of conductor of a DC motor can be determined by

 Fleming's right hand rule.
 Lenz's law.
 Ampere law.
 Fleming's left hand rule.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Maximum allowable moisture content of power transformer insulating oil is generally taken as

 20 ppm.
 45 ppm.
  35 ppm.
 25 ppm.

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
↑