Mumbai University > FE > Sem 1 > Basic Electrical and Electronics Engineering

Marks: 6 M

Year: May 2014, May 2015

1.Assumption:-

The 3-ø system considered here is a load, which is star connected.

The phase sequence is R→Y→B.

It is a balanced load.

The pf of each phase is logging.

2.Connection:-It is as shown in Fig (a)

3.Proof

Reading of wattmeter W1

$W_1=V_{AB}I_{RL}\cos(\angle between …