A. actual power is zero
B. reactive power is zero
C. apparent power is zero
D. none of above is zero
A. a sinusoid of the same frequency
B. a sinusoid of half the original frequency
C. a sinusoid of double the frequency
D. not a sinusoid
A. average value/r.m.s. value
B. average value/peak value
C. r.m.s. value/average value
D. r.m.s. value/peak value
A. low
B. very low
C. high
D. very high
A. a line which represents the magnitude and phase of an alternating quantity
B. a line representing the magnitude and direction of an alternating quantity
C. a coloured tag or band for distinction between different phases of a 3-phase supply
D. an instrument used for measuring phases of an unbalanced 3-phase load
A. consumes some power on average
B. does not take power at all from a line
C. takes power from the line during some part of the cycle and then returns back to it during other part of the cycle
D. none of the above
A. true power
B. reactive power
C. volt-amperes
D. instantaneous power