Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?

The efficiency of steam turbine is higher
The steam consumption is less
A steam turbine develops higher speeds
All of these

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

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

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Steam Boilers, Engines, Nozzles and Turbines
In recuperative air preheaters, the heat is transferred

Heat is transferred by bleeding some gases from furnace
From a metal wall from one medium to another
From heating an intermediate material and then heating the air from this material
By direct mixing

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