Compressors, Gas Turbines and Jet Engines Maximum delivery pressure is a rotary air compressor is of the order of 10 kg/cm² 16 kg/cm² 25 kg/cm² 6 kg/cm² 10 kg/cm² 16 kg/cm² 25 kg/cm² 6 kg/cm² 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 One adiabatic, one isobaric and two constant volumes Two adiabatic, one isobaric and one constant volume Two adiabatic and two isobaric One adiabatic, two isobaric, and one constant volume One adiabatic, one isobaric and two constant volumes Two adiabatic, one isobaric and one constant volume Two adiabatic and two isobaric One adiabatic, two isobaric, and one constant volume ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Pick up the wrong statement about advantages of multistage compression Better lubrication is possible advantages of multistage More loss of air due to leakage past the cylinder Mechanical balance is better Air can be cooled perfectly in between Better lubrication is possible advantages of multistage More loss of air due to leakage past the cylinder Mechanical balance is better Air can be cooled perfectly in between ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because It is impossible in practice It does not increase pressure much It requires very big cylinder Compressor has to run at very slow speed to achieve it It is impossible in practice It does not increase pressure much It requires very big cylinder Compressor has to run at very slow speed to achieve it ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Dia. of L.P. cylinder, and D₂ = Dia. of H.P. cylinder) D₁/D₂ = p₁ p₂ D₁/D₂ = p₁/p₂ D₁/D₂ = p₂/p₁ None of these D₁/D₂ = p₁ p₂ D₁/D₂ = p₁/p₂ D₁/D₂ = p₂/p₁ None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbines for power generation are normally used In emergency To enable start thermal power plant To supply base load requirements To supply peak load requirements In emergency To enable start thermal power plant To supply base load requirements To supply peak load requirements ANSWER DOWNLOAD EXAMIANS APP
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