SSC JE Electrical Engineering 2014 Set 2 Paper

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Question : 109 of 200

Marks: +1, -0

The power factor of the circuit shown in figure :

0.75 lagging
0.6 lagging
0.3 lagging
0.8 lagging

Solution:

Power factor

= \cosϕ=R/z={3+5}/10=0.8

(where

z =√{R^2+X^2_L}=√{8^2+6^2}=10Ω

Due to

X_L

the power factor will be lagging.
∴ Option (d) is correct.

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