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Runaway speed of a hydraulic turbine is

A. Full load speed

B. The speed at which turbine runner will be damaged

C. The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open

D. The speed corresponding to maximum overload permissible

Correct Answer :

C. The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open


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