7. The power factor in AC circuit is equal to :
(a) Z/R
(b) R/Z
(c) RZ
(d) none of the
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AC Fundamentals » Exercise - 1 17. A power factor of ‘1’ indicates ________. (a) purely resistive circuit (b) purely reactive circuit (c) combination of both, a and b (d) none of theseAC Fundamentals » Exercise - 1 4. Form factor for a sine wave is ________. (a) 1.414 (b) 0.707 (c) 1.11 (d) 0.637AC Fundamentals » Exercise - 113. If the phase angle θ is 450, what is the power factor ? (a) cos 450 (b) sin 450 (c) tan 450 (d) none of theseAC Fundamentals » Exercise - 1 26. The form factor of dc voltage is ________. (a) zero (b) infinite (c) unity (d) 0.5AC Fundamentals » Exercise - 129. A sinusoidal current has peak value of 12 A. What is its average value ? (a) 7.64 A (b) 24 A (c) 8.48 A (d) 12 A