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

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

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?

Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler

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