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Electric Circuits

Electric Circuits
Which battery is used in aeroplanes?

 Edission cell.
 Lead acid battery.
 None of them.
 Dry cell battery.

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Electric Circuits
An alternating voltage = 140 sinθ is supplied to a device which offers a resistance of 20 Ω in forward direction of current in reverse direction. Calculate the form factor.

 0.57.
 1.414.
 1.11.
 0.318.

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Electric Circuits
Total power consumed in the circuit below is 10 W. Find X.

 1 A.
 3 A.
 None of these.
  2 A.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 42.4sin50πt.
 30sin50πt.
 30sin25πt.
 42.4sin25πt.

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Electric Circuits
Which of the following elements is/are called dynamic element/s?

 L.
 R.
 Both L and C.
 C.

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Electric Circuits
A dependent source can be

 both a voltage or a current source.
 a current source.
 a voltage source.
 neither a voltage nor a current source.

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