5 MVA, 3-phase, 14.1-KV, 0.85-PF- lagging, 50-Hz, 4-pole, Y-connected steam-turbine generator has a synchronous reactance of 10 per- phase, and a negligible armature resistance. This generator is connected to operate in parallel with a large power system (infinite bus). The generator is operating at constant field current with EA = 8.0 KV and & = 30 °. Find the new torque angle ô to increase the output power by 100 % . Select one: a. Snew = 80.2° b. 6new = 60° c. Snew = 90° O d. None

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A 5 MVA, 3-phase, 14.1-KV, 0.85-PF- lagging, 50-Hz, 4-pole, Y-connected steam-turbine generator has a synchronous reactance of 10 per- phase, and a negligible armature resistance. This generator is connected to operate in parallel with a large power system (infinite bus). The generator is operating at constant field current with EA = 8.0 KV and & = 30 °. Find the new torque angle ô to increase the output power by 100 % . Select one: a. Snew = 80.2° b. 6new = 60° c. Snew = 90° O d. None
A 5 MVA, 3-phase, 14.1-KV, 0.85-PF-
lagging, 50-Hz, 4-pole, Y-connected
steam-turbine generator has a
synchronous reactance of 10 per-
phase, and a negligible armature
resistance. This generator is
connected to operate in parallel with a
large power system (infinite bus).
The generator is operating at constant
field current with EA = 8.0 KV and & =
30 °.
Find the new torque angle ô to
increase the output power by 100 % .
Select one:
a. Snew = 80.2°
b. 6new = 60°
c. Snew = 90°
O d. None
Transcribed Image Text:A 5 MVA, 3-phase, 14.1-KV, 0.85-PF- lagging, 50-Hz, 4-pole, Y-connected steam-turbine generator has a synchronous reactance of 10 per- phase, and a negligible armature resistance. This generator is connected to operate in parallel with a large power system (infinite bus). The generator is operating at constant field current with EA = 8.0 KV and & = 30 °. Find the new torque angle ô to increase the output power by 100 % . Select one: a. Snew = 80.2° b. 6new = 60° c. Snew = 90° O d. None
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