Compressors, Gas Turbines and Jet Engines For speed above 3000 km/hour, it is more advantageous to use Ramjet engine Rockets Turbojet engine Propellers Ramjet engine Rockets Turbojet engine Propellers ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of the net work obtained from the gas turbine plant to the turbine work is known as Compression ratio None of these Work ratio Pressure ratio Compression ratio None of these Work ratio Pressure ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by p₂ = p₁. p₃ P₂ = Pa × p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = Pa p₃/p₁ p₂ = p₁. p₃ P₂ = Pa × p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = Pa p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines An ideal air compressor cycle with clearance on P-V diagram can be represented by following processes 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 Two adiabatic and two isobaric ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A 3 m³/min compressor means that it Delivers 3 m³/ min of compressed air Compresses 3 m³/ min of free air Delivers 3 m³/ min of compressed air at delivery pressure Compresses 3 m³/min of standard air Delivers 3 m³/ min of compressed air Compresses 3 m³/ min of free air Delivers 3 m³/ min of compressed air at delivery pressure Compresses 3 m³/min of standard air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in a gas turbine Increases the compressor work Increases the turbine work Increases the thermal efficiency Decreases the thermal efficiency Increases the compressor work Increases the turbine work Increases the thermal efficiency Decreases the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
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