AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 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 25% of maximum value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will Be four times as high Be reduced by half Be reduced to one fourth Be doubled Be four times as high Be reduced by half Be reduced to one fourth Be doubled ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phosphors for which of the following pair are 180° out of phase for VL, VC and VR? VL and VR VC and VL VC and VR None of these VL and VR VC and VL VC and VR None of these ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The phosphors for which of the following pair are 180° out of phase for VL, VC and VR? VC and VL None of the listed here VC and VR VL and VR VC and VL None of the listed here VC and VR VL and VR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In an AC. circuit, a low value of kVAR compared with kW indicates Maximum load current Unity power factor High power factor Low efficiency Maximum load current Unity power factor High power factor Low efficiency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be 111 V 282.8 V 141.4 V 100 V 111 V 282.8 V 141.4 V 100 V ANSWER DOWNLOAD EXAMIANS APP
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