AC Fundamentals, Circuit and Circuit Theory In an AC. circuit, a low value of kVAR compared with kW indicates Low efficiency Maximum load current High power factor Unity power factor Low efficiency Maximum load current High power factor Unity power factor 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 VR None of the listed here VC and VL VL and VR VC and VR None of the listed here VC and VL ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Skin effect occurs when a conductor carries current at _________ frequencies. High Medium Low Very low High Medium Low Very low ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of coil 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 Becomes zero with the increase in supply frequency Decreases with the increase in supply frequency Increases with the increase in supply frequency ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Wire-wound resistors are unsuitable for use at high frequencies because they Are likely to melt under excessive eddy current heat Exhibit unwanted inductive and capacitive effects Consume more power Create more electrical noise Are likely to melt under excessive eddy current heat Exhibit unwanted inductive and capacitive effects Consume more power Create more electrical noise ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA The power drawn by the circuit is 36 kW 80 kW 32 kW 40 kW 36 kW 80 kW 32 kW 40 kW ANSWER DOWNLOAD EXAMIANS APP
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