AC Fundamentals, Circuit and Circuit Theory The inductance of a coil can be increased by Decreasing the diameter of the former Choosing core material having high relative permeability Increasing core length Decreasing the number of turns Decreasing the diameter of the former Choosing core material having high relative permeability Increasing core length Decreasing the number of turns 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 Maximum load current Unity power factor High power factor Low efficiency Maximum load current Unity power factor High power factor ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a highly capacitive circuit the Actual power is more than its reactive power Reactive power is more than the actual power Reactive power is more than the apparent power Apparent power is equal to the actual power Actual power is more than its reactive power Reactive power is more than the actual power Reactive power is more than the apparent power Apparent power is equal to the actual power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a series L-C circuit at the resonant frequency the Voltage across C is minimum Current is maximum Current is minimum Impedance is maximum Voltage across C is minimum Current is maximum Current is minimum Impedance is maximum ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value Will increase the selectivity of the circuit Will change the resonance frequency Will change the maximum value of current at resonance Will change the impedance at resonance frequency Will increase the selectivity of the circuit Will change the resonance frequency Will change the maximum value of current at resonance Will change the impedance at resonance frequency 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 32 kW 80 kW 40 kW 36 kW 32 kW 80 kW 40 kW ANSWER DOWNLOAD EXAMIANS APP
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