Steam Boilers, Engines, Nozzles and Turbines
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

Throttle governing
By-pass governing
None of these
Cut-off governing

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

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

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