Compressors, Gas Turbines and Jet Engines Reheating in a multistage expansion gas turbine ________ compressor work. Increases Has no effect on None of these Decreases Increases Has no effect on None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is Bled gas from turbine is heated and readmitted for complete expansion Exhaust gases drive the compressor Heated Compressed air before entering the combustion chamber is heated Bled gas from turbine is heated and readmitted for complete expansion Exhaust gases drive the compressor Heated Compressed air before entering the combustion chamber is heated ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the Total adiabatic temperature drop Adiabatic temperature drop in the stage Total temperature drop Total temperature drop in the stage Total adiabatic temperature drop Adiabatic temperature drop in the stage Total temperature drop Total temperature drop in the stage 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)/2 p₂ = Pa p₃/p₁ P₂ = Pa × p₃/p₁ p₂ = p₁. p₃ p₂ = (p₁ + p₃)/2 p₂ = Pa p₃/p₁ P₂ = Pa × p₃/p₁ p₂ = p₁. p₃ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For speed above 3000 km/hour, it is more advantageous to use Propellers Ramjet engine Rockets Turbojet engine Propellers Ramjet engine Rockets Turbojet engine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency, even when running at high speed, can be approached by using Cold water spray Multistage compression Fully insulating the cylinder Both (A) and (B) above Cold water spray Multistage compression Fully insulating the cylinder Both (A) and (B) above ANSWER DOWNLOAD EXAMIANS APP
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