Electrical Engineering Questions And Answers :: Magnetism And Electromagnetism: part4



Electrical Engineering : Magnetism And Electromagnetism QUESTIONS AND ANSWERS :: part4 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.Core of an electromagnet should have

low coercivity
high susceptibility
both of the above
none of the above

2.The attraction capacity of electromagnet will increase if the

core length increases i
core area increases
flux density decreases
flux density increases

3.Which of the following statements is correct ?

The conductivity of ferrites is better than ferromagnetic materials
The conductivity of ferromagnetic materials is better than ferrites
The conductivity of ferrites is very high
The conductivity of ferrites is same as that of ferromagnetic materials

4.Main causes of noisy solenoid are

strong tendency of fan out of lami-nations at the end caused by repul�sion among magnetic lines of force
uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts
both of above
none of the above

5.Temporary magnets are used in

loud-speakers
generators
motors
all of the above

More Magnetism And Electromagnetism QUESTIONS AND ANSWERS available in next pages

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