AC Fundamentals, Circuit and Circuit Theory The equation of 50 Hz current sine wave having r.m.s. value of 60 A is 42.42 sin 314 t 84.84 sin 3141 60 sin 25 t 60 sin 50 t 42.42 sin 314 t 84.84 sin 3141 60 sin 25 t 60 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Wire-wound resistors are unsuitable for use at high frequencies because they 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 Are likely to melt under excessive eddy current heat Exhibit unwanted inductive and capacitive effects ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave? 84.84 sin 25 t 42.42 sin 314 t 60 sin 25 t 30 sin 50 t 84.84 sin 25 t 42.42 sin 314 t 60 sin 25 t 30 sin 50 t ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory All the rules and laws of D.C. circuit also apply to A.C. circuit containing Inductance only All above Capacitance only Resistance only Inductance only All above Capacitance only Resistance only 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 VC and VR None of the listed here VL and VR VC and VL VC and VR None of the listed here VL and VR ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Power factor of an inductive circuit is usually improved by connecting capacitor to it in Both parallel and series Parallel None of the listed here Series Both parallel and series Parallel None of the listed here Series ANSWER DOWNLOAD EXAMIANS APP
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