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MAGNETISM AND CAPACITORS
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1) What is the effect on surrounding metal placed in a magnetic field?
Hysteresis
Skin effect
Eddy current
Dielectric stress
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Correct Answer: Eddy current
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1) What is the effect on surrounding metal placed in a magnetic field?
Hysteresis
Skin effect
Eddy current
Dielectric stress
2) In which device the air capacitors are used?
TV tuner
Oscillator
Loudspeaker
Radio receiver
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Correct Answer: Radio receiver
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2) In which device the air capacitors are used?
TV tuner
Oscillator
Loudspeaker
Radio receiver
3) What will happen, if the polarized electrolytic capacitor is reversely connected?
No effect on the capacitor
Explode due to excessive heat
Current is reduced in the circuit
Value of capacitance will be increased
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Correct Answer: Explode due to excessive heat
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3) What will happen, if the polarized electrolytic capacitor is reversely connected?
No effect on the capacitor
Explode due to excessive heat
Current is reduced in the circuit
Value of capacitance will be increased
4) Which is the diamagnetic substance?
Wood
Nickel
Platinum
Manganese
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Correct Answer: Wood
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4) Which is the diamagnetic substance?
Wood
Nickel
Platinum
Manganese
5) What is the S.I unit of Flux density?
Tesla
Weber
Weber/metre
Ampere-turns
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Correct Answer: Tesla
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5) What is the S.I unit of Flux density?
Tesla
Weber
Weber/metre
Ampere-turns
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