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Electric Circuits

Electric Circuits
The Laplace Transform of a shifted unit step f (t) = U (t-a) is

 se-as.
 (e-as)/s.
 e-as.
 s(1-e-as).

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Electric Circuits
The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

 10 µ joules.
 18 µ joules.
  55.1 µ joules.
 20 µ joules.

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Electric Circuits
The thevnin equivalent of the circuit shown in the figure is

 1.5V, 5/6 Ohm
 0.75V, 5/6 Ohm
 0.75 V, 1.5 Ohm
 1.5V, 1.5 Ohm

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Electric Circuits
In ac RC series circuit total voltage is 10V and voltage across resistor is 6V, then what is voltage across capacitor?

 10V
 16V
 4V
 8V

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Electric Circuits
In which of the circuits power factor can be zero?

 inductive.
 capacitive.
 resistive.
 both ‘a’ and ‘b’

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Electric Circuits
A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be

 0.1 μF.
 0.001 μF.
 1 μF.
 0.01 μF.

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MORE MCQ ON Electric Circuits

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