Steam Boilers, Engines, Nozzles and Turbines Hard coke is produced by carburization of coal at 700-850°C Atmospheric temperature 500-600°C 950-1100°C 700-850°C Atmospheric temperature 500-600°C 950-1100°C ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of a boiler is defined as Ratio of heat actually used in producing steam to the heat liberated in the furnace Ratio of the heat liberated in the furnace to the heat actually used in producing steam Ratio of the mass of steam produced to the mass of total water supplied in a given time None of these Ratio of heat actually used in producing steam to the heat liberated in the furnace Ratio of the heat liberated in the furnace to the heat actually used in producing steam Ratio of the mass of steam produced to the mass of total water supplied in a given time None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The aim of a compound steam engine is All of these To reduce the temperature range in each cylinder To reduce the length of stroke To reduce the ratio of expansion in each cylinder All of these To reduce the temperature range in each cylinder To reduce the length of stroke To reduce the ratio of expansion in each cylinder ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economizer (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of 20 : 48 : 7 : 15 : 10 7 : 15 : 20 : 10 : 48 48 : 20 : 15 : 7 : 10 10 : 7 : 15 : 20 : 48 20 : 48 : 7 : 15 : 10 7 : 15 : 20 : 10 : 48 48 : 20 : 15 : 7 : 10 10 : 7 : 15 : 20 : 48 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The increase in pressure Reduces its volume Does not affects the boiling point of a liquid Raises the boiling point of a liquid Lowers the boiling point of a liquid Reduces its volume Does not affects the boiling point of a liquid Raises the boiling point of a liquid Lowers the boiling point of a liquid ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The capacity of induced draft fan compared to forced draft fan in a boiler is More Less or more depending on size of boiler Less Same More Less or more depending on size of boiler Less Same ANSWER DOWNLOAD EXAMIANS APP
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