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Electric Circuits

Electric Circuits
To obtain a high value of capacitance, the permittivity of dielectric medium should be

 unity
 high
 zero
 low

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Electric Circuits
A capacitor in a circuit became hot and ultimately exploded due to wrong connection, which type of capacitor it could be?

 Ceramic capacitor.
 Paper capacitor.
 Any of above.
 Electrolytic capacitor.

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Electric Circuits
1 F is theoretically equal to

 ratio of 1 V to 1 C
 none of these
 1 ohm of resistance
 ratio of 1 C to 1 V

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Electric Circuits
Which of following capacitors has relatively shorter shelf life?

 both (B) and (C) above.
 Paper.
 Glass.
 Electrolytic.

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Electric Circuits
A constant voltage source has

 minimum current capacity.
 low internal resistance.
 minimum efficiency.
 high internal resistance.

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Electric Circuits
Total instantaneous power supplied by a 3 - φ AC supply to a balanced RL load is

 pulsating with zero average.
 pulsating with non zero average.
 zero.
 constant.

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