Steam Boilers, Engines, Nozzles and Turbines
Carbonization of coal is the process of

Binding the pulverized coal into briquettes
Heating wood in a limited supply of air at temperatures below 300°C
Pulverizing coal in inert atmosphere
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Boiler H.P. is defined as the

Work done by 1 kg of steam at saturation condition
Steam evaporation rate per kg of fuel fired
The evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam
Work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is a

Multi-tubular, horizontal, internally fired and mobile boiler
Multi-tubular, horizontal, externally fired and stationary boiler
Single tube, horizontal, internally fired and stationary boiler
Single tube, vertical, externally fired and stationary boiler

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