Electric Circuits When AC flows through a pure capacitance then the current leads the emf by 90o. lags the emf by 90o. is in phase with emf. leads the emf by - 90o. leads the emf by 90o. lags the emf by 90o. is in phase with emf. leads the emf by - 90o. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is referred as the average value in AC opearation? Average of all values of an alternating quantity. Average of all values of the (+)ve and (-)ve half. Average of all values of the phase sequences. Average of all values of an alternating quantity over a complete cycle. Average of all values of an alternating quantity. Average of all values of the (+)ve and (-)ve half. Average of all values of the phase sequences. Average of all values of an alternating quantity over a complete cycle. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be 10 µF 5 µF 160 µF 40 µF 10 µF 5 µF 160 µF 40 µF ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is the relation between time period T and frequency? T = 0.5 / frequency. T = 0.85 / frequency. T = 1 / frequency. T = frequency. T = 0.5 / frequency. T = 0.85 / frequency. T = 1 / frequency. T = frequency. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits When power factor angle is constant, then shape of the current locus is circle. triangle. straight line. semi circle. circle. triangle. straight line. semi circle. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits In which of the following oscillations are not present? Under damping Both 2 and 3 Critical damping Over damping Under damping Both 2 and 3 Critical damping Over damping ANSWER DOWNLOAD EXAMIANS APP
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