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 E = 8.6 KV and 8 = 25 °. Find the new torque angle & to increase the output power by 15 %. Select one: O a. 8new = 21.05° O b. 8new = 29.08° O c. Snew = 27.6° O d. None Clear my choice

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 E = 8.6 KV and 8 = 25 °. Find the new torque angle & to increase the output power by 15 %. Select one: O a. 8new = 21.05° O b. 8new = 29.08° O c. Snew = 27.6° O d. None Clear my choice

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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D2. When a generator's full-load output voltage is the same as its no-load output voltage it is said to be a) under-compounded b) flat-compounded c) over-compounded d) none of the above D3. The output of an overcompounded DC generator can be lowered by use of a a) rheostat connected in series with the series field b) rheostat connected in parallel with the series field c) rheostat connected in parallel with the shunt field d) none of the above D4. When might it be desirable to use an overcompounded generator? a) never b) always c) to compensate for line loss d) when you need a higher no-load voltage than your full-load voltage