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) The temperature coefficient of resistance of a conductor with an increase in temperature.
A) increases
B) decreases
C) remains the same
D) becomes negative
Ans:B
2) The temperature coefficient of resistance of insulators is
A) zero
B) negative
C) positive
D) infinite
Ans:B
3) The temperature coefficient of resistance of eureka is
A) positive
B) negative
C) almost zero
D) infinite
Ans:C
4) If the value of 𝞪o a conductor is 1/234 per °C then the value of 𝞪18 is
A) 1/218 per °C
B) 1/252 per °C
C) 1/272 per °C
D) 1/273 per °C
Ans:B
5) If the value of 𝞪25 a conductor is 1/255 per °C then the value of 𝞪20 is
A) 1/300 per °C
B) 1/250 per °C
C) l/230 per °C
D) 1/260 per °C
Ans:B
6) If the value of 𝞪25 of a conductor is l/230 per °C then the value of 𝞪0 is
A) l/180 per °C
B) l/150 per °C
C) l/280 per °C
D) l/230 per “C
Ans:A
7) Ohm’s law cannot be applied to which material‘?
A) Copper
B) Silver
C) Silicon carbide
D) Aluminum
Ans:C
8) What is the practical unit of electrical energy’?
A) Watt
B) Kilowatt-hour
C) Kilowatt-second
D) Megawatt-hour
Ans:B
9) A 200-watt lamp working for 24 hours Wlll consume approximately units
A) 50
B) 5
C) 24
D) 0.5
Ans:B
10) The hot resistance of an incandescent lamp is about its cold resistance
A) 10 times
B) 100 times
C) 5 times
D) 50 times
Ans:A
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l) The temperature coefficient of resistance of a conductor with an increase in temperature.
A) increases
B) decreases
C) remains the same
D) becomes negative
Ans:B
2) The temperature coefficient of resistance of insulators is
A) zero
B) negative
C) positive
D) infinite
Ans:B
3) The temperature coefficient of resistance of eureka is
A) positive
B) negative
C) almost zero
D) infinite
Ans:C
4) If the value of 𝞪o a conductor is 1/234 per °C then the value of 𝞪18 is
A) 1/218 per °C
B) 1/252 per °C
C) 1/272 per °C
D) 1/273 per °C
Ans:B
5) If the value of 𝞪25 a conductor is 1/255 per °C then the value of 𝞪20 is
A) 1/300 per °C
B) 1/250 per °C
C) l/230 per °C
D) 1/260 per °C
Ans:B
6) If the value of 𝞪25 of a conductor is l/230 per °C then the value of 𝞪0 is
A) l/180 per °C
B) l/150 per °C
C) l/280 per °C
D) l/230 per “C
Ans:A
7) Ohm’s law cannot be applied to which material‘?
A) Copper
B) Silver
C) Silicon carbide
D) Aluminum
Ans:C
8) What is the practical unit of electrical energy’?
A) Watt
B) Kilowatt-hour
C) Kilowatt-second
D) Megawatt-hour
Ans:B
9) A 200-watt lamp working for 24 hours Wlll consume approximately units
A) 50
B) 5
C) 24
D) 0.5
Ans:B
10) The hot resistance of an incandescent lamp is about its cold resistance
A) 10 times
B) 100 times
C) 5 times
D) 50 times
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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