• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Magnetism and Electromagnetism

Magnetism and Electromagnetism
Air gap has_______eluctance as compared to iron or steel path

higher
lower
little
zero

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
An electromagnetic field exists only when there is

voltage
an increasing current
decreasing current
current

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?

633.8 N/Wb
63380 N/Wb
63.38 N/Wb
6338 N/Wb

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength?

250 AT/m
25 AT/m
0.25 AT/m
2500 AT/m

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
Core of an electromagnet should have

High susceptibility
None of the listed here
Both low coercivity and high susceptibility
Low coercivity

ANSWER DOWNLOAD EXAMIANS APP

Magnetism and Electromagnetism
Magnetising steel is normals difficult because

it corrodes easily
it has low permeability
it has high specific gravity
it has high permeability

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Magnetism and Electromagnetism

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
↑