Steam Boilers, Engines, Nozzles and Turbines
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Less than
None of the listed here
Equal to
More than

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

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

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