AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees. 30 60 90 45 30 60 90 45 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a parallel R-C circuit, the current always _________the applied voltage. Remains in phase with Lags None of the listed here Leads Remains in phase with Lags None of the listed here Leads ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The ratio of active power to apparent power is known as factor. Form Load Demand Power Form Load Demand Power 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. 10 15 5 25 10 15 5 25 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The equation of 50 Hz current sine wave having r.m.s. value of 60 A is 60 sin 50 t 60 sin 25 t 84.84 sin 3141 42.42 sin 314 t 60 sin 50 t 60 sin 25 t 84.84 sin 3141 42.42 sin 314 t 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
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