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

Area of the actual indicator diagram to the area of theoretical indicator diagram
Actual workdone per stroke to the theoretical workdone per stroke
Actual mean effective pressure to the theoretical mean effective pressure
Any one of the above

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement is correct for a compound steam engine?

The ratio of expansion is reduced, thus reducing the length of stroke
The temperature range per cylinder is increased, with corresponding increase in condensation
The forces in the working parts are increased as the forces are distributed over more parts
The cost of the engine, for the same power and economy, is more than that of a simple steam engine

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