Steam Boilers, Engines, Nozzles and Turbines Coke is produced by Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Pulverizing coal in inert atmosphere Heating wood in a limited supply of air at temperatures below 300°C Enriching carbon in the coal Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Pulverizing coal in inert atmosphere Heating wood in a limited supply of air at temperatures below 300°C Enriching carbon in the coal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The Parsons' reaction turbine has Only moving blades Fixed and moving blades of different shape Only fixed blades Identical fixed and moving blades Only moving blades Fixed and moving blades of different shape Only fixed blades Identical fixed and moving blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be 79 m/s 188 m/s 450 m/s 900 m/s 79 m/s 188 m/s 450 m/s 900 m/s ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder. Equal to None of the listed here More than Less than Equal to None of the listed here More than Less than ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The relative heat absorption for successively added equal areas of boiler convection heating surfaces Increases Remain unaffected First increases and then decreases Decreases Increases Remain unaffected First increases and then decreases Decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the isentropic heat drop to the heat supplied, is called Reheat factor Internal efficiency Rankine efficiency Stage efficiency Reheat factor Internal efficiency Rankine efficiency Stage efficiency ANSWER DOWNLOAD EXAMIANS APP
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