If the turbine shaft speed signal received by a typical turbine governor control system fails high during turbine startup, the turbine governor will cause turbine speed to…
A. increase until an upper limit is reached or the turbine trips on overspeed.
B. increase until the mismatch with the turbine speed demand signal is nulled.
C. decrease until a lower limit is reached or turbine steam flow is isolated.
D. decrease until the mismatch with the turbine speed demand signal is nulled.
Show Answer
Answer: C
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