Steam Boilers, Engines, Nozzles and Turbines
The main object of a boiler trial is

All of these
To prepare heat balance sheet for the boiler
To determine the generating capacity of the boiler
To determine the thermal efficiency of the boiler when working at a definite pressure

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Steam Boilers, Engines, Nozzles and Turbines
In cross compounding, the cylinders are arranged

At 90° and each cylinder has separate piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
Side by side and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank

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Steam Boilers, Engines, Nozzles and Turbines
Stoichiometric quantity of air is the

Air required for optimum combustion so as to have reasonable excess air
Air required for complete combustion of fuel with no excess air
Air required to convert CO into CO₂
Air present in atmosphere at NTP conditions

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