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Electric Circuits

Electric Circuits
A current of 1 mA flows through a 1M ohm, 2 W carbon resistor. The power dissipated as heat in the resistor will be

 2 W.
None of these
 0.5 W.
 1 W.

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Electric Circuits
If a resistor is connected across the voltage source and the frequency of voltage and current wave form is 50Hz, then what is frequency of instantaneous power

 0 Hz.
 50 Hz.
 150 Hz.
 100 Hz.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be

 20.2o.
 32.1o.
 40.4o.
 28.8o.

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Electric Circuits
The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

 2 V.
 0.5 V.
 None of these.
 1 V.

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Electric Circuits
Which of the following Y-parameters is dimensionless?

 Y11.
 Y12.
 Y22.
 none of these.

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Electric Circuits
If a pure inductor is connected across the ac source, the average power taken by the inductor is

 zero watt.
 a few watt.
 100 watt.
 maximum power.

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MORE MCQ ON Electric Circuits

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