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 impedance at resonance frequency Will increase the selectivity of the circuit Will change the resonance frequency Will change the maximum value of current at resonance Will change the impedance at resonance frequency Will increase the selectivity of the circuit Will change the resonance frequency Will change the maximum value of current at resonance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 16 kVAR 12 kVAR 10 kVAR 8 kVAR 16 kVAR 12 kVAR 10 kVAR 8 kVAR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohm. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 15 25 10 5 15 25 10 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following waves has the highest value of peak factor ? Half wave rectified sine wave Sine wave Triangular wave Square wave Half wave rectified sine wave Sine wave Triangular wave Square wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Form factor for a sine wave is 1.11 1.414 0.707 0.637 1.11 1.414 0.707 0.637 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a purely inductive circuit None of the listed here Apparent power is zero Actual power is zero Reactive power is zero None of the listed here Apparent power is zero Actual power is zero Reactive power is zero ANSWER DOWNLOAD EXAMIANS APP
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