Question:-
The clearance flow between the blade tips and casing of a steam turbine is
Option (A)
Greater in the reaction turbine than in the impulse type
Option (B)
Greater in the impulse turbine than in the reaction type
Option(C)
Independent of type of the turbine
Option(D)
Independent of the size of the turbine
Correct Option:
(A)
Question Solution:
The leakage loss between the blade tips and the casing is greater in the reaction turbine than in impulse turbine due to the pressure difference across the clearance passage
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