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Magnetism & Electromagnetism MCQ Questions Answers Electrical Engineering

Magnetism & Electromagnetism MCQ Questions Answers – Electrical Engineering


1)The magnetic material used in permanent magnets is

a) iron

b) soft steel

c) nickel

d) hardened steel

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2) The relative permeability of iron is of the order of

a) zero

b) 104

c) 1

d) 10-4

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3) Which of the following is more suitable for the core of an electromagnet?

a) soft iron

b) air

c) steel

d) tungsten steel

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4) Magnetic flux passes more readily through

a) air

b) wood

c) vacuum

d) iron

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5) The magnetic material used in temporary magnets is

a) hardened steel

b) cobalt steel

c) soft iron

d) tungsten steel

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6) Magnetic flux density is a

a) vector quantity

b) scalar quantity

c) phasor

d) none of the above

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7) When a charged particle moves  through a magnetic field, it suffers a change in

a) direction

b) speed

c) energy

d) no change

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8) The resistance of an ideal ammeter is

a) zero

b) high

c) infinite

d) 10

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9) The resistance of an ideal voltmeter is

a) zero

b) infinite

c) very low

d) data incomplete

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10) In the above question, the momentum of the particle will

a) be zero

b) change

c) not change

d) none of the above

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11) A voltmeter, an ammeter and a cell are connected in series. The ammeter will

a) be burnt

b) show almost zero

c) give large value

d) cannot say

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12) The range of an ammeter can be

a) increased only

b) decreased only

c) increased or decreased

d) information incomplete

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13) A charge will experience a force in an electric field when it is

a) stationary

b) moving

c) stationary or moving

d) none of the above

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14) A direct current is sent through a helical spring. The spring tends

a) to get shorter

b) to rotate about the axis

c) to get longer

d) to move eastward

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15) Magnetic field is caused by

a) stationary charge

b) a moving positive charge only

c) a moving negative charge only

d) moving positive and negative charges both

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