1. A 3-phase, 400-V, synchronous motor takes 52.5 A at a power factor of 0.8 leading. C: power supplied and the induced e.m.f. The motor impedance per phase is (0.25 + j3.2) 129 1

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1. A 3-phase, 400-V, synchronous motor takes 52.5 A at a power factor of 0.8 leading. Calculate the
power supplied and the induced e.m.f. The motor impedance per phase is (0.25 +j3.2) ohm.
[29.1 kW; 670VI
2. The input to a 11-kV, 30, Y-connected synchronous motor is 60 A. The effective resistance and
synchronous reactance per phase are I 2 and 30 2 respectively. Find (a) power supplied to the
motor and (b) the induced e.m.f. for a p.f. of 0.8 leading.
|(a) 915 kW (b) 13kV]
Transcribed Image Text:1. A 3-phase, 400-V, synchronous motor takes 52.5 A at a power factor of 0.8 leading. Calculate the power supplied and the induced e.m.f. The motor impedance per phase is (0.25 +j3.2) ohm. [29.1 kW; 670VI 2. The input to a 11-kV, 30, Y-connected synchronous motor is 60 A. The effective resistance and synchronous reactance per phase are I 2 and 30 2 respectively. Find (a) power supplied to the motor and (b) the induced e.m.f. for a p.f. of 0.8 leading. |(a) 915 kW (b) 13kV]
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