AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 25% of maximum value 63% of maximum value 90% of the maximum value 50% of maximum value 25% of maximum value 63% of maximum value 90% of the maximum value 50% of maximum value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In any A.C. circuit always Actual power is more than reactive power Apparent power is more than actual power Reactive power is more than actual power Reactive power is more than apparent power Actual power is more than reactive power Apparent power is more than actual power Reactive power is more than actual power Reactive power is more than apparent power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In the case of an unsymmetrical alternating current the average value must always be taken over The whole cycle The quarter cycle The half cycle Unsymmetrical part of the wave form The whole cycle The quarter cycle The half cycle Unsymmetrical part of the wave form ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The period of a sine wave is ___________ seconds. Its frequency is 50 Hz 20 Hz 30 Hz 40 Hz 50 Hz 20 Hz 30 Hz 40 Hz ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is 36 kW 32 kW 40 kW 80 kW 36 kW 32 kW 40 kW 80 kW ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that Both waves must have identical peak values Both waves must have same frequency Both waves must have zero value at the same time None of these Both waves must have identical peak values Both waves must have same frequency Both waves must have zero value at the same time None of these ANSWER DOWNLOAD EXAMIANS APP
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