SSC JE Electrical Engineering 24 Jan 2018 Evening Paper

Question : 139 of 200

Marks: +1, -0

A 3-phase delta connected system is supplied by a line voltage of 400 V. The value of phase current is 70 A. What is the power (in kW) consumed by the system, if the current lags the voltage by 60 degrees?

16.8
42
67.2
84

Validate

Solution:

Power Consume =

3V_\ph.I _\ph \cosϕ

V_\LL = 400V, I _\ph = 70A

in Delta

V_\ph = V_\LL

V_\ph = 400 V

= 3 × 400 × 70 ×

cos 60
= 42 KW

Go to Question:

Prev Question

Next Question