Steam Boilers, Engines, Nozzles and Turbines
When the inlet pressure of steam is equal to the exit pressure, then

There is a pressure drop in the nozzle
Fluid flows through the nozzle
Pressure drops and fluid flows through the nozzle
There is no pressure drop and fluid does not flow through the nozzle

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Steam Boilers, Engines, Nozzles and Turbines
The nozzle efficiency is the ratio of

Workdone on the blades to the energy supplied to the blades
None of these
Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam

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