Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called

Tandem type compound engine
Woolf type compound engine
Both (A) and (B)
Receiver type compound engine

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Steam Boilers, Engines, Nozzles and Turbines
The function of a piston in a steam engine is

None of these
To transfer motion from the piston to the cross-head
To guide motion of the piston rod and to prevent it from bending
To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment

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