What improper operation can cause hunting?
A) Loss of casing and/or line insulation
B) Allowing turbine to run at critical speeds
C) Allowing "wet steam" or condensate into the turbine
D) Having a turbine governor that is toggling the speed above and below normal operating set point
Answer: D
Explanation: A) Incorrect. A turbine governor that is toggling the speed above and below normal operating set point can cause hunting.
B) Incorrect. A turbine governor that is toggling the speed above and below normal operating set point can cause hunting.
C) Incorrect. A turbine governor that is toggling the speed above and below normal operating set point can cause hunting.
D) Correct. A turbine governor that is toggling the speed above and below normal operating set point can cause hunting.
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