Why we use cosine angle for calculating power factor not in sine angle ?

Why we use cosine angle for calculating power factor not in
sine angle ?

Question Posted / md.mostafizur rahman

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Why we use cosine angle for calculating power factor not in sine angle ?..

See its because when there is no power lag, that is when the phase shift is 0 your other parameters shouldn't affect by the cos (phi). So when Phi=0 then cos (phi)=1. Therefore its much convenient to choose cosine rather than sine angles.

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Why we use cosine angle for calculating power factor not in sine angle ?..

Answer / sanjana singh

Literally watt power factor means the factor of real use full power that is going to transmit from the total apparent power produced so that is why it is the ratio of real power to complex power which can b taken as cosine of angle ratio from power triangle. It is the reason why power factor is cos theta.

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Why we use cosine angle for calculating power factor not in sine angle ?..

Answer / k.prakashchandra

Examine the power triangle.The adjacent side (active power)
divided by hypotenuse( apparent power) is cos of the
angle.If you multiply apparent power by sine of the angle
you get reactive power.

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1 Yes

6 No

Why we use cosine angle for calculating power factor not in sine angle ?..

Answer / k.prakashchandra

pf = active (real)power/apparent power.In the power triangle
adjacent side is active power and hypotenuse is apparent
power.

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8 No

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