AC Fundamentals, Circuit and Circuit Theory Power factor of an electrical circuit is equal to R/Z Ratio of useful current to total current Iw/I all of these Cosine of phase angle difference between current and voltage R/Z Ratio of useful current to total current Iw/I all of these Cosine of phase angle difference between current and voltage ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The safest value of current the human body can carry for more than 3 second is 5 mA 4 mA 15 mA 9 mA 5 mA 4 mA 15 mA 9 mA ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory At __________ frequencies the parallel R-L circuit behaves as purely resistive. Low Very low Very high High Low Very low Very high High ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to The statement is incorrect The size of the capacitor being quite big The capacitive reactance in ohms The current flowing in capacitor The statement is incorrect The size of the capacitor being quite big The capacitive reactance in ohms The current flowing in capacitor ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a series L-C circuit at the resonant frequency the Voltage across C is minimum Impedance is maximum Current is minimum Current is maximum Voltage across C is minimum Impedance is maximum Current is minimum Current is maximum ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will Be doubled Be reduced to one fourth Be reduced by half Be four times at high Be doubled Be reduced to one fourth Be reduced by half Be four times at high ANSWER DOWNLOAD EXAMIANS APP
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