AC Fundamentals, Circuit and Circuit Theory The peak value of a sine wave is 200 V. Its average value is 141.4 V 282.8 V 200 V 127.4 V 141.4 V 282.8 V 200 V 127.4 V ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of coil Becomes zero with the increase in supply frequency Decreases with the increase in supply frequency Increases with the increase in supply frequency Is unaffected by the supply frequency Becomes zero with the increase in supply frequency Decreases with the increase in supply frequency Increases with the increase in supply frequency Is unaffected by the supply frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Time constant of an inductive circuit Increases with the decrease of inductance and decrease of resistance Increases with decrease of inductance and increase of resistance Increases with increase of inductance and decrease of resistance Increases with the increase of inductance and the increase of resistance Increases with the decrease of inductance and decrease of resistance Increases with decrease of inductance and increase of resistance Increases with increase of inductance and decrease of resistance Increases with the increase of inductance and the increase of resistance 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. 25 5 15 10 25 5 15 10 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 None of these VC and VR VC and VL VL and VR None of these VC and VR VC and VL ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory All definitions of power factor of a series R-L-C circuit are correct except Ratio of W and VA Ratio of net reactance and impedance Ratio of J and Z Ratio of kW and kVA Ratio of W and VA Ratio of net reactance and impedance Ratio of J and Z Ratio of kW and kVA ANSWER DOWNLOAD EXAMIANS APP
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