AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of pure cosine function is Zero 0.5 of peak value 0.707 of peak value Same as peak value Zero 0.5 of peak value 0.707 of peak value Same as peak value ANSWER DOWNLOAD EXAMIANS APP
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 50% of maximum value 90% of the maximum value 63% of maximum value 25% of maximum value 50% of maximum value 90% of the maximum value 63% of maximum value 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 None of the listed here Both waves must have zero value at the same time Both waves must have identical peak values Both waves must have same frequency None of the listed here Both waves must have zero value at the same time 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 increase the selectivity of the circuit Will change the impedance at resonance frequency Will change the maximum value of current at resonance Will change the resonance frequency Will increase the selectivity of the circuit Will change the impedance at resonance frequency Will change the maximum value of current at resonance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Power factor of the following circuit will be unity Inductance Resistance None of the listed here Capacitance Inductance Resistance None of the listed here Capacitance ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value and mean value is the same in the case of Sine wave Half wave rectified sine wave Square wave Triangular wave Sine wave Half wave rectified sine wave Square wave Triangular wave ANSWER DOWNLOAD EXAMIANS APP
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