The ratio of active power to apparent power is known as factor__________?
The ratio of active power to apparent power is known as factor__________?
A. demand
B. load
C. power
D. form
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The voltage of domestic supply is 220V. This figure represents__________?
The voltage of domestic supply is 220V. This figure represents__________?A. mean value
B. r.m.s. value
C. peak value
D. average valueA parallel AC. circuit in resonance will__________?
A parallel AC. circuit in resonance will__________?A. have a high voltage developed across each inductive and capacitive section
B. have a high impedance
C. act like a resistor of low value
D. have current in each section equal to the line currentIn a circuit containing R, L and C, power loss can take place in____________?
In a circuit containing R, L and C, power loss can take place in____________?A. C only
B. L only
C. R only
D. all aboveThe time constant of a series R-C circuit is given by____________?
The time constant of a series R-C circuit is given by____________?A. R/C
B. RC2
C. RC
D. R2CThe peak value of a sine wave is 200 V. Its average value is___________?
The peak value of a sine wave is 200 V. Its average value is___________?A. 127.4 V
B. 141.4 V
C. 282.8 V
D. 200VAt _______ frequencies the parallel R-L circuit behaves as purely resistive
At _______ frequencies the parallel R-L circuit behaves as purely resistiveA. low
B. very low
C. high
D. very high