Hi friends, these are some of the multiple choice questions on electrical and magnetic properties. These are some of the basic questions which are asked in previous competitive papers check out and comment...
1) How many electrons are needed in the valence orbit to give a material’s stability?
A) 8
B) 4
C) 6
D) 5
Ans:A
2) Residual magnetism refers to the flux density, which exists in the iron core when the magnetic field intensity is
A) Minimized
B) Reduced to zero
C) Maximize
D) Unity
Ans:B
3) Magnetic intensity is a
A) Phasor quantity
B) Physical quantity
C) Scalar quantity
D) Vector quantity
Ans:D
4) The core of a magnetic equipment uses a magnetic material with
A) Least permeability
B) Low permeability
C) Moderate permeability
D) High permeability
Ans:D
5) Which of the following is a paramagnetic material?
A) Carbon
B) Copper
C) Bismuth
D) Oxygen
Ans:D
6) The permeability of permalloy is
A) Very much greater than permeability of air
B) Slightly greater than permeability of air
C) Slightly less than permeability of air
D) Equal to the permeability of air
Ans:A
7) A t/m is a unit of
A) Mmf
B) Emf
C) Reluctance
D) Magnetizing force
Ans:D
8) The force between two magnetic poles is................. their poles strength
A) equal to
B) directly proportional to
C) inversely proportional to
D) directly proportional to the square root of
Ans:B
9) The magnetic energy stored in an inductor is current.
A) Directly proportional to
B) Inversely proportional to
C) Directly proportional to the square of
D) Inversely proportional to the square of
Ans:C
10) One of the common application of an air- cored choke.
A) Radio frequency
B) Audio frequency
C) Power supply
D) Power transformer
Ans:A
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1) How many electrons are needed in the valence orbit to give a material’s stability?
A) 8
B) 4
C) 6
D) 5
Ans:A
2) Residual magnetism refers to the flux density, which exists in the iron core when the magnetic field intensity is
A) Minimized
B) Reduced to zero
C) Maximize
D) Unity
Ans:B
3) Magnetic intensity is a
A) Phasor quantity
B) Physical quantity
C) Scalar quantity
D) Vector quantity
Ans:D
4) The core of a magnetic equipment uses a magnetic material with
A) Least permeability
B) Low permeability
C) Moderate permeability
D) High permeability
Ans:D
5) Which of the following is a paramagnetic material?
A) Carbon
B) Copper
C) Bismuth
D) Oxygen
Ans:D
6) The permeability of permalloy is
A) Very much greater than permeability of air
B) Slightly greater than permeability of air
C) Slightly less than permeability of air
D) Equal to the permeability of air
Ans:A
7) A t/m is a unit of
A) Mmf
B) Emf
C) Reluctance
D) Magnetizing force
Ans:D
8) The force between two magnetic poles is................. their poles strength
A) equal to
B) directly proportional to
C) inversely proportional to
D) directly proportional to the square root of
Ans:B
9) The magnetic energy stored in an inductor is current.
A) Directly proportional to
B) Inversely proportional to
C) Directly proportional to the square of
D) Inversely proportional to the square of
Ans:C
10) One of the common application of an air- cored choke.
A) Radio frequency
B) Audio frequency
C) Power supply
D) Power transformer
Ans:A
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
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