Q5/ Two 300KVA, 1000V, 50HZ alternators operating in parallel to supply a load of 500KW at UPF. 60% of the load is supplied by the first generator. If the terminal voltage and power supplied are kept constant always, then changing the excitation to make pf=0.8 lagging. Find the generator currents, power factors and total load current. (the generator and load are single phase)

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.21P: An industrial plant consisting primarily of induction motor loads absorbs 500 kW at 0.6 power factor...
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Q5/ Two 300KVA, 1000V, 50HZ alternators operating in parallel
to supply a load of 500KW at UPF. 60% of the load is supplied
by the first generator. If the terminal voltage and power supplied
are kept constant always, then changing the excitation to make
pf=0.8 lagging. Find the generator currents, power factors and
total load current. (the generator and load are single phase)
Q6/ The efficiency of a 3-phase, star connected synchronous
motor is 95% and it takes 24A at full load and unity power factor.
What will be the induced e.m.f. if total mechanical power
developed at full load and 0.9 power factor leading is 14620W.
The synchronous impedance per phase is (0.2+j2) 2.
Transcribed Image Text:Q5/ Two 300KVA, 1000V, 50HZ alternators operating in parallel to supply a load of 500KW at UPF. 60% of the load is supplied by the first generator. If the terminal voltage and power supplied are kept constant always, then changing the excitation to make pf=0.8 lagging. Find the generator currents, power factors and total load current. (the generator and load are single phase) Q6/ The efficiency of a 3-phase, star connected synchronous motor is 95% and it takes 24A at full load and unity power factor. What will be the induced e.m.f. if total mechanical power developed at full load and 0.9 power factor leading is 14620W. The synchronous impedance per phase is (0.2+j2) 2.
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