2 wattmeter are used to measure power in a 3ø balanced delta connected load using 2 wattmeter are method. The readings of the 2 wattmeter are 500W and 2500W respectively. Calculate the total power consumed by the 3ø load and the power factor. - Mumbai University > FE > Sem 1 > Basic Electrical and Electronics Engineering

Marks: 4 M

Year: May 2015

In delta connection

W1=500w

W2=2500w

Total power absorbed = P=W1+W2=3000w

Assume logging p.f.

$\emptyset=\tan^{-1}\bigg[\sqrt3\bigg(\dfrac{w_1-w_2}{w_1+w_2}\bigg)\bigg] \\ =\tan^{-1}\bigg\{\dfrac{\sqrt3(2000)}{3000}\bigg\} \\ =49.1066^0 \\ \text{power factor}=\cos\emptyset=0.6546(logging)$