AC Fundamentals, Circuit and Circuit Theory In a pure inductive circuit The current can lead or lag by 90° The current lags behind the voltage by 90° The current is in phase with the voltage The current leads the voltage by 90° The current can lead or lag by 90° The current lags behind the voltage by 90° The current is in phase with the voltage The current leads the voltage by 90° 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 80 kW 36 kW 40 kW 32 kW 80 kW 36 kW 40 kW 32 kW ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The product of apparent power and cosine of the phase angle between circuit voltage and current is Volt-amperes Reactive power True power Instantaneous power Volt-amperes Reactive power True power Instantaneous power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Which of the following statements pertains to resistors only? Can dissipate considerable amount of power Connecting them in parallel increases the total value Can act as energy storage devices Oppose sudden changes in voltage Can dissipate considerable amount of power Connecting them in parallel increases the total value Can act as energy storage devices Oppose sudden changes in voltage 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? None of these VC and VR VL and VR VC and VL None of these VC and VR VL and VR VC and VL ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of Skin effect Capacitive effect between adjacent coil turns Increase in temperature Iron loss in core Skin effect Capacitive effect between adjacent coil turns Increase in temperature Iron loss in core ANSWER DOWNLOAD EXAMIANS APP
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