AC Fundamentals, Circuit and Circuit Theory The peak value of a sine wave is 200 V. Its average value is 282.8 V 200 V 141.4 V 127.4 V 282.8 V 200 V 141.4 V 127.4 V ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of pure cosine function is 0.707 of peak value Same as peak value 0.5 of peak value Zero 0.707 of peak value Same as peak value 0.5 of peak value Zero 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 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 Both waves must have identical peak values Both waves must have same frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of the capacitance circuit is defined as the time during which voltage Rises to 38.6% of its final steady value None of these Falls to 36.8% of its final steady value Rises to 63.2% of its final steady value Rises to 38.6% of its final steady value None of these Falls to 36.8% of its final steady value Rises to 63.2% of its final steady value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a loss-free R-L-C circuit the transient current is Non-oscillating Sinusoidal Oscillating Square wave Non-oscillating Sinusoidal Oscillating Square wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of Capacitive effect between adjacent coil turns Iron loss in core Skin effect Increase in temperature Capacitive effect between adjacent coil turns Iron loss in core Skin effect Increase in temperature ANSWER DOWNLOAD EXAMIANS APP
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