Compressors, Gas Turbines and Jet Engines Propulsion efficiency of the following order is obtained in practice 0.6 0.72 0.34 0.5 0.6 0.72 0.34 0.5 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The maximum propulsion efficiency of a turbojet is attained at around following speed 1050 km/hr 2400 km/hr 550 km/hr 1700 km/hr 1050 km/hr 2400 km/hr 550 km/hr 1700 km/hr ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The overall isothermal efficiency of compressor is defined as the ratio of Isothermal h.p. to the BHP of motor Power to drive compressor to isothermal h.p. Work to compress air isothermally to work for actual compression Isothermal h.p. to adiabatic h.p. Isothermal h.p. to the BHP of motor Power to drive compressor to isothermal h.p. Work to compress air isothermally to work for actual compression Isothermal h.p. to adiabatic h.p. ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air) p₂ = p₁/p₃ p₂ = p₁ × p₂ p₂ = p₁ × p₃ p₂ = p₃/p₁ p₂ = p₁/p₃ p₂ = p₁ × p₂ p₂ = p₁ × p₃ p₂ = p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to 20°C and 1 kg/cm² Intake temperature and pressure conditions N.T.P. conditions 0°C and 1 kg/cm² 20°C and 1 kg/cm² Intake temperature and pressure conditions N.T.P. conditions 0°C and 1 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thrust of a jet propulsion power unit can be increased by All of these Injecting ammonia into the combustion chamber Burning fuel after gas turbine Injecting water into the compressor All of these Injecting ammonia into the combustion chamber Burning fuel after gas turbine Injecting water into the compressor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS