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A.C. Fundamentals, Circuits and Circuit Theory
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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_________?
Related MCQs
A parallel AC. circuit in resonance will__________?
In AC. circuits, laminated iron is invariably used in order to__________?
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The purpose of a parallel circuit resonance is to magnify________?
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Which of the following statements pertains to resistors only __________?
Aphasoris________?
Capacitive susceptance is a measure of__________?
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In a parallel R-C circuit, the current always________the applied voltage?
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In an A.C. circuit power is dissipated in__________?
Skin effect occurs when a conductor carries current at_______ frequencies
The power is measured in terms of decibles in case of_________?
At _______ frequencies the parallel R-L circuit behaves as purely resistive
At very low frequencies a series R-C circuit behaves as almost purely__________?
The frequency of domestic power supply in Pakistan is_________?
In a three-phase supply floating neutral is undesirable because it way give rise to__________?
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Which of the following waves has the highest value of peak factor __________?
The inductance of a coil can be increased by_________?
The phosphors for which of the following pair are 180° out of phase for VL, VC and VR______?
The r.m.s. value of pure cosine function is_________?
The series and parallel resonance on L-C circuit’ differs in that_________?
The frequency of an alternating current is__________?
Ohm is unit of all of the following except__________?
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is__________?
The power factor of a D.C. circuit is always__________?
In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will__________?
In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will__________?
An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?
The product of apparent power and cosine of the phase angle between circuit voltage and current is
A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?
When an alternating current passes through an ohmic resistance the electrical power converted into heat is__________?
In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters ______?
The power factor at resonance in R-L- C parallel circuit is________?
In a pure inductive circuit__________?
In the case of an unsymmetrical alternating current the average value must always be taken over__________?
The transient currents are associated with the__________?
In a pure resistive circuit__________?
In a circuit containing R, L and C, power loss can take place in__________?
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces__________?
The time constant of the capacitance circuit is defined as the time during which voltage________?
The square waveform of current has following relation between r.m.s. value and average value?
In a loss-free R-L-C circuit the transient current is__________?
Power factor of the system is kept high__________?
Power factor of the following circuit will be zero__________?
Pure inductive circuit__________?
Inductance of a coil Varies__________?
In a highly capacitive circuit the__________?
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_________?
A. 4 kVAR
B. 6 kVAR
C. 8 kVAR
D. 16 kVAR
Correct Answer:
6 kVAR
✔
Last Updated:
December 11, 2018