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Q2. A ship’s electrical load is made up as follows:

* motors totalling 2100 kW at a p.f of 0.7 lag

* lighting and heating totalling 1200 kW at U.P.F.

* an overexcited synchronous motor drawing 600 kW at p.f 0.5 lead.

It is supplied by two alternators one of which provides 2000 kW at p.f. 0.95 lag.

Determine EACH of the following:

(a) the kVA supplied by the second alternator;

(b) the power factor of the second alternator;

(c) the overall power factor of the system if the synchronous motor is not connected.