EXAMIANS
In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will
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Which of the following circuit component opposes the change in the circuit voltage ?
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The peak value of a sine wave is 200 V. Its average value is
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If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is
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Ohm is unit of all of the following except
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In the case of an unsymmetrical alternating current the average value must always be taken over
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A sine wave has a frequency of 50 Hz. Its angular frequency is __________ radian/second.
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The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.
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The time constant of a series R-C circuit is given by
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The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of
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