Two identical 20 MW alternators operate in parallel. The governor of first machine is such that the frequency drops uniformly from 50 Hz on no-load to 48 Hz on full-load . The corresponding uniform speed drop of the second machine is 50 Hz to 47.5 Hz . How will the two machines share a load of 30 MW?

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Two identical 20 MW alternators
operate in parallel.
The governor of first machine
is such that the frequency
drops uniformly from
50 Hz on no-load to 48 Hz
on full-load
The corresponding uniform
speed drop of the second
machine
is 50 Hz to 47.5 Hz
. How will the two machines
share a load of 30 MW?
B
F
A50
49
420 MW-
Load
48 E
Freq (Hz)
47.5
Fig. 12.100
20 MW-
Load
H
D
Transcribed Image Text:Two identical 20 MW alternators operate in parallel. The governor of first machine is such that the frequency drops uniformly from 50 Hz on no-load to 48 Hz on full-load The corresponding uniform speed drop of the second machine is 50 Hz to 47.5 Hz . How will the two machines share a load of 30 MW? B F A50 49 420 MW- Load 48 E Freq (Hz) 47.5 Fig. 12.100 20 MW- Load H D
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