Compressors, Gas Turbines and Jet Engines In a reciprocating air compressor, the compression work per kg of air Increases as clearance volume decreases Decreases as clearance volume increases Increases as clearance volume increases Is independent of clearance volume Increases as clearance volume decreases Decreases as clearance volume increases Increases as clearance volume increases Is independent of clearance volume ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Phenomenon of choking in compressor means No flow of air Increased inclination of chord with air steam Reducing mass flow rate with increase in pressure ratio Fixed mass flow rate regardless of pressure ratio No flow of air Increased inclination of chord with air steam Reducing mass flow rate with increase in pressure ratio Fixed mass flow rate regardless of pressure ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at Impeller outlet radius Diffuser outlet radius Diffuser inlet radius Impeller inlet radius Impeller outlet radius Diffuser outlet radius Diffuser inlet radius Impeller inlet radius ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in Turbine blades, which is essentially an isentropic process Turbine blades, which is a constant volume process Exit nozzle, which is essentially an isentropic process Exit nozzle, which is a constant volume process Turbine blades, which is essentially an isentropic process Turbine blades, which is a constant volume process Exit nozzle, which is essentially an isentropic process Exit nozzle, which is a constant volume process ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines It is not possible to use closed gas turbine cycle in aeronautical engines because It requires cooling water for its operation It is inefficient It is bulky None of these It requires cooling water for its operation It is inefficient It is bulky None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines An ideal air compressor cycle without clearance on P-V diagram can be represented by following processes Two adiabatic and two isobaric Two adiabatic, one isobaric and one constant volume One adiabatic, two isobaric, and one constant volume One adiabatic, one isobaric and two constant volumes Two adiabatic and two isobaric Two adiabatic, one isobaric and one constant volume One adiabatic, two isobaric, and one constant volume One adiabatic, one isobaric and two constant volumes ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS