AC Fundamentals, Circuit and Circuit Theory Wire-wound resistors are unsuitable for use at high frequencies because they Create more electrical noise Exhibit unwanted inductive and capacitive effects Consume more power Are likely to melt under excessive eddy current heat Create more electrical noise Exhibit unwanted inductive and capacitive effects Consume more power Are likely to melt under excessive eddy current heat ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For a sine wave with peak value Emax ___________ the average value is 0.434 Emax None of the listed here 0.636 Emax 0.707 Emax 0.434 Emax None of the listed here 0.636 Emax 0.707 Emax ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In an AC. circuit, a low value of kVAR compared with kW indicates Low efficiency High power factor Maximum load current Unity power factor Low efficiency High power factor Maximum load current 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? VC and VR None of these VC and VL VL and VR VC and VR None of these VC and VL VL and VR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The power factor of a D.C. circuit is always Less than unity Unity Zero Greater than unity Less than unity Unity Zero Greater than unity ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 16 kVAR 10 kVAR 12 kVAR 8 kVAR 16 kVAR 10 kVAR 12 kVAR 8 kVAR ANSWER DOWNLOAD EXAMIANS APP
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