AC Fundamentals, Circuit and Circuit Theory In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will Be reduced by half Be four times as high Be doubled Be reduced to one fourth Be reduced by half Be four times as high Be doubled Be reduced to one fourth ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value Will change the resonance frequency Will change the maximum value of current at resonance Will increase the selectivity of the circuit Will change the impedance at resonance frequency Will change the resonance frequency Will change the maximum value of current at resonance Will increase the selectivity of the circuit Will change the impedance at resonance frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be 111 V 141.4 V 100 V 282.8 V 111 V 141.4 V 100 V 282.8 V 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 same frequency Both waves must have identical peak values Both waves must have zero value at the same time None of these Both waves must have same frequency Both waves must have identical peak values Both waves must have zero value at the same time None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory When an alternating current passes through an ohmic resistance the electrical power converted into heat is None of the listed here Active power Apparent power Reactive power None of the listed here Active power Apparent power Reactive power 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 40 kW 32 kW 36 kW 80 kW 40 kW 32 kW 36 kW 80 kW ANSWER DOWNLOAD EXAMIANS APP
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