SSE JE Electrical Engineering 29 Oct 2020 Shift 2 Papers

Question : 112 of 200

Marks: +1, -0

Power factor of a circuit or installation is defined as:

the ratio of power received at the received end to the total power transmitted at the sending end
the ratio of power consumed by the circuit in W to the total power at sending end
the ratio of the maximum connected load to the total connected load
the ratio of power consumed by the circuit in W to the total complex power input to the circuit in VA

Solution:

In AC circuits, power factor can be defined as the ratio of real power to the apparent power.
It is represented by cos ϕ
In AC circuits, real power (in kW) = VI cos ϕ
Reactive power (in kVAR) = VI sin ϕ
Apparent power (in kVA) = VI

\cos \ϕ={\text " Real power (in kW ) "}/{\text" Apparent power (in kVA ) "}

Go to Question:

Prev Question

Next Question