Question

What is the main cause for below 0.5 lagging power factor in 3-phase
system?
(A) Due to fluctuation of voltage
(B) True power due to resistive load
(C) Reactive power due to more inductive load
(D) Reactive power due to more capacitive load​

Answer 1

its B so hope it helps you

Answer 2

The correct answer to this question is option (C) Reactive power due to more inductive load.

Explanation:

• The typical reason for the low power factor is the inductive load.  

• The power factor lags because the current in the inductive load lags behind the voltage.

• Power factor is the relation of Active Power to the Apparent power. So, inductive loads pull reactive power which rises apparent power but active power consumption is less.  

• Thus, the power factor becomes poor. Some of the equipment which uses reactive power are transformers, 3 phase induction motors, and welding machines.