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

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

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Steam Boilers, Engines, Nozzles and Turbines
The relative efficiency is defined as the

Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
Ratio of thermal efficiency to Rankine efficiency

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