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...
l) One farad equals
A) 1 coulomb/volt
B) 1 newton/coulomb
C) 1 newton-meter
D) 1 volt/second/ampere
Ans:A
2) Which of the following is used by permanent magnets as the magnetic material?
A) iron
B) nickel
C) soft steel
D) hardened steel
Ans:D
3) Which of the following is used by temporary magnets as the magnetic material?
A) Hardened steel
B) Cobalt steel
C) Soft iron
D) Tungsten steel
Ans:C
4) What is the main advantage of temporary magnets?
A) The magnetic flux can be changed.
B) Hysteresis can be decreased.
C) Magnetic materials can be used.
D) Abundance of ferromagnetic material that can be temporarily magnetized.
Ans:A
5) Permanent magnets can be found in
A) electric bells
B) earphones
C) relays
D) dynamic loudspeakers
Ans:B
6) Temporary magnets are commonly employed in
A) electric instruments
B) motors
C) moving coils loudspeakers
D) magnetos
Ans:B
7) The force between two magnetic poles is their pole strengths.
A) directly proportional to
B) the sum of
C) inversely proportional to
D) the product of
Ans:A
8) If the distance between two magnetic poles decreases by 2 times, the force between them
A) decreases two times
B) increases four times
C) increases two times
D) decreases four times
Ans:B
9) The force between two magnetic poles is the relative permeability of the medium.
A) directly proportional to
B) independent of
C) inversely proportional to
D) equal to
Ans:C
10) Two similar poles, each 1Wb, placed 1 m apart in air will experience a repulsive force of
A) 63000 N
B) 63 X 10^-3 N
C) 8 X 10^12 N
D) 796 k N
Ans:A
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l) One farad equals
A) 1 coulomb/volt
B) 1 newton/coulomb
C) 1 newton-meter
D) 1 volt/second/ampere
Ans:A
2) Which of the following is used by permanent magnets as the magnetic material?
A) iron
B) nickel
C) soft steel
D) hardened steel
Ans:D
3) Which of the following is used by temporary magnets as the magnetic material?
A) Hardened steel
B) Cobalt steel
C) Soft iron
D) Tungsten steel
Ans:C
4) What is the main advantage of temporary magnets?
A) The magnetic flux can be changed.
B) Hysteresis can be decreased.
C) Magnetic materials can be used.
D) Abundance of ferromagnetic material that can be temporarily magnetized.
Ans:A
5) Permanent magnets can be found in
A) electric bells
B) earphones
C) relays
D) dynamic loudspeakers
Ans:B
6) Temporary magnets are commonly employed in
A) electric instruments
B) motors
C) moving coils loudspeakers
D) magnetos
Ans:B
7) The force between two magnetic poles is their pole strengths.
A) directly proportional to
B) the sum of
C) inversely proportional to
D) the product of
Ans:A
8) If the distance between two magnetic poles decreases by 2 times, the force between them
A) decreases two times
B) increases four times
C) increases two times
D) decreases four times
Ans:B
9) The force between two magnetic poles is the relative permeability of the medium.
A) directly proportional to
B) independent of
C) inversely proportional to
D) equal to
Ans:C
10) Two similar poles, each 1Wb, placed 1 m apart in air will experience a repulsive force of
A) 63000 N
B) 63 X 10^-3 N
C) 8 X 10^12 N
D) 796 k N
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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