Steam Boilers, Engines, Nozzles and Turbines
In an impulse turbine

The steam is expanded in nozzles only and there is a pressure drop and heat drop
The steam is expanded in moving blades only
The pressure and temperature of steam remains constant
The steam is expanded both in fixed and moving blades continuously

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Steam Boilers, Engines, Nozzles and Turbines
In water tube boilers

The flames and hot gases pass through the tubes which are surrounded by water
Forced circulation takes place
None of these
Water passes through the tubes which are surrounded by flames and hot gases

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

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

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

Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
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

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