Magnetism And Electromagnetism MCQ Questions & Answers | Electrical Engineering Page-7 section-1

61.
How does the magnetic compass needle behave in a magnetic field?

A. It assures a position right angle to magnetic field

B. It starts rotating

C. It assures a position which follows a line of magnetic flux

D. None of the above

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62.
A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?

A. Decreases

B. Increases

C. Remains same

D. First increases and then decreases depending on the depth of iron in¬sertion

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63.
One telsa is equal to

A. 1 Wb/mm²

B. 1 Wb/m

C. 1 Wb/m²

D. 1 mWb/m²

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64.
The susceptibility of paramagnetic materials generally lies between

A. 10^-3 and 10^-5

B. 10^-3 and 10^-7

C. 10^-4 and 10^-8

D. 10^-2 and 10^-5

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65.
The materials are a bit inferior conductors of magnetic flux than air.

A. ferromagnetic

B. paramagnetic

C. diamagnetic

D. dielectric

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66.
The use of permanent magnets is. not made in

A. magnetoes

B. energy meters

C. transformers

D. loud-speakers

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67.
Degaussing is the process of

A. removal of magnetic impurities

B. removing gases from the materials

C. remagnetising metallic parts

D. demagnetising metallic parts

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68.
Air gap has_______eluctance as compared to iron or steel path

A. little

B. lower

C. higher

D. zero

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69.
Which of the following is a ferromagnetic material?

A. Tungsten

B. Aluminium

C. Copper

D. Nickel

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70.
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

A. proportional to 7

B. proportional to X

C. proportional to distance between the conductors

D. inversely proportional to I

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Magnetism And Electromagnetism MCQ Questions & Answers | Electrical Engineering

61. How does the magnetic compass needle behave in a magnetic field?

Answer & Solution

62. A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?

Answer & Solution

63. One telsa is equal to

Answer & Solution

64. The susceptibility of paramagnetic materials generally lies between

Answer & Solution

65. The materials are a bit inferior conductors of magnetic flux than air.

Answer & Solution

66. The use of permanent magnets is. not made in

Answer & Solution

67. Degaussing is the process of

Answer & Solution

68. Air gap has_______eluctance as compared to iron or steel path

Answer & Solution

69. Which of the following is a ferromagnetic material?

Answer & Solution

70. The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

Answer & Solution

61.
How does the magnetic compass needle behave in a magnetic field?

62.
A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?

63.
One telsa is equal to

64.
The susceptibility of paramagnetic materials generally lies between

65.
The materials are a bit inferior conductors of magnetic flux than air.

66.
The use of permanent magnets is. not made in

67.
Degaussing is the process of

68.
Air gap has_______eluctance as compared to iron or steel path

69.
Which of the following is a ferromagnetic material?

70.
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is