AC Fundamentals, Circuit and Circuit Theory All definitions of power factor of a series R-L-C circuit are correct except Ratio of kW and kVA Ratio of net reactance and impedance Ratio of W and VA Ratio of J and Z Ratio of kW and kVA Ratio of net reactance and impedance Ratio of W and VA Ratio of J and Z 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 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 purpose of a parallel circuit resonance is to magnify Power Frequency Current Voltage Power Frequency Current Voltage ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Magnitude of current at resonance in R-L-C circuit Depends upon the magnitude of R Depends upon the magnitude of R, Land C Depends upon the magnitude of C Depends upon the magnitude of L Depends upon the magnitude of R Depends upon the magnitude of R, Land C Depends upon the magnitude of C Depends upon the magnitude of L ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters? 220 V 220 v3 V 220/v3 V None of these 220 V 220 v3 V 220/v3 V None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms, Both resistance and inductance carry equal currents The current through the resistance is more None of the listed here The current through the resistance is less Both resistance and inductance carry equal currents The current through the resistance is more None of the listed here The current through the resistance is less ANSWER DOWNLOAD EXAMIANS APP
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