SSC JE Electrical Engineering 23 Jan 2018 Evening Paper

Question : 127 of 200

Marks: +1, -0

What is the magnitude of reactive power (in kVAR) of a balanced 3-phase delta connected system having a line voltage of 400 V and a line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?

0.2771
2.771
27.71
277.1

Validate

Solution:

Reactive power (KVAR)

=√3V_LI_L\sinϕ

=√3×400×50×\sin 53.13

=√3×20000×0.8

= 27.71 KVAR

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