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

The steam is expanded both in fixed and moving blades continuously
The steam is expanded in moving blades only
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
The function of a flywheel is

To keep the engine speed uniform at all load conditions
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
To convert reciprocating motion of the piston into rotary motion
To prevent fluctuation of speed

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Steam Boilers, Engines, Nozzles and Turbines
The function of a valve rod is

To provide simple harmonic motion to the D-slide valve
To convert reciprocating motion of the piston into rotary motion of the crank
To provide reciprocating motion to the slide valve
To convert rotary motion of the crankshaft into to and fro motion of the valve rod

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