A. zero
B. 0.08 lagging
C. 0.8 leading
D. unity
The power factor at resonance in R-L- C parallel circuit is________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory A. the current is in phase with the voltage
B. the current lags behind the voltage by 90°
C. the current leads the voltage by 90°
D. the current can lead or lag by 90°
In a pure inductive circuit___________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory A. unsymmetrical part of the wave form
B. the quarter cycle
C. the half cycle
D. the whole cycle
A. changes in the stored energy in the inductors and capacitors
B. impedance of the circuit
C. applied voltage to the circuit
D. resistance of the circuit
The transient currents are associated with the____________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory A. current lags behind the voltage by 90°
B. current leads the voltage by 90°
C. current can lead or lag the voltage by 90°
D. current is in phase with the voltage
In a pure resistive circuit__________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory A. C only
B. L only
C. R only
D. all above
In a circuit containing R, L and C, power loss can take place in____________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory A. the more heat than produced by A.C. when flowing through the same circuit
B. the same heat as produced by A.C. when flowing through the same circuit
C. the less heat than produced by A.C. flowing through the same circuit
D. none of the above
A. falls to 36.8% of its final steady value
B. rises to 38.6% of its final steady value
C. rises to 63.2% of its final steady value
D. none of the above
A. r.m.s. value is equal to average value
B. r.m.s. value of current is greater than average value
C. r.m.s. value of current is less than average value
D. none of the above
A. oscillating
B. square wave
C. sinusoidal
D. non-oscillating
In a loss-free R-L-C circuit the transient current is__________? Read More »
A.C. Fundamentals, Circuits and Circuit Theory