Compressors, Gas Turbines and Jet Engines The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity) (v₁² -v₂²)/2g (v₁ - v₂)²/2g (v₁² -v₂²)/g (v₁ - v₂)²/g (v₁² -v₂²)/2g (v₁ - v₂)²/2g (v₁² -v₂²)/g (v₁ - v₂)²/g ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Phenomenon of choking in compressor means Fixed mass flow rate regardless of pressure ratio Reducing mass flow rate with increase in pressure ratio No flow of air Increased inclination of chord with air steam Fixed mass flow rate regardless of pressure ratio Reducing mass flow rate with increase in pressure ratio No flow of air Increased inclination of chord with air steam 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 = p₂/p₁ D₁/D₂ = p₁ p₂ None of these D₁/D₂ = p₁/p₂ D₁/D₂ = p₂/p₁ D₁/D₂ = p₁ p₂ None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The type of rotary compressor used in aeroplanes, is of None of these Axial flow type Radial flow type Centrifugal type None of these Axial flow type Radial flow type Centrifugal type ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For an irreversible gas turbine cycle, the efficiency and work ratio both depend on Both pressure ratio and maximum cycle temperature Pressure ratio alone Maximum cycle temperature alone Minimum cycle temperature alone Both pressure ratio and maximum cycle temperature Pressure ratio alone Maximum cycle temperature alone Minimum cycle temperature alone ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the Thrust and range of aircraft Efficiency of the engine Both (A) and (B) None of these Thrust and range of aircraft Efficiency of the engine Both (A) and (B) None of these ANSWER DOWNLOAD EXAMIANS APP
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