Compressors, Gas Turbines and Jet Engines Water gas is produced by Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast Passing steam over incandescent coke Passing air and a large amount of steam over waste coal at about 65°C Carbonisation of coal Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast Passing steam over incandescent coke Passing air and a large amount of steam over waste coal at about 65°C Carbonisation of coal ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor decreases with ________ in compression ratio. Decrease Increase Does not change Remain same Decrease Increase Does not change Remain same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during Isothermal compression Polytropic compression None of these Isentropic compression Isothermal compression Polytropic compression None of these Isentropic compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor with clearance volume Increases with increase in compression ratio In not dependent upon compression ratio May increase/decrease depending on compressor capacity Decreases with increase in compression ratio Increases with increase in compression ratio In not dependent upon compression ratio May increase/decrease depending on compressor capacity Decreases with increase in compression ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, the ratio of the ________ to the blade velocity is called slip factor. Outlet whirl velocity Inlet whirl velocity Outlet velocity of flow Inlet velocity of flow Outlet whirl velocity Inlet whirl velocity Outlet velocity of flow Inlet velocity of flow ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Inter-cooling in gas turbine results in Increase in thermal efficiency but decrease in net output Increase in net output but decrease in thermal efficiency Decrease in both thermal efficiency and net output Increase in both thermal efficiency and net output Increase in thermal efficiency but decrease in net output Increase in net output but decrease in thermal efficiency Decrease in both thermal efficiency and net output Increase in both thermal efficiency and net output ANSWER DOWNLOAD EXAMIANS APP
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