Compressors, Gas Turbines and Jet Engines A simple turbojet engine is basically Gas turbine engine equipped with a propulsive nozzle and diffuse Ramjet engine A propeller system Chemical rocket engine Gas turbine engine equipped with a propulsive nozzle and diffuse Ramjet engine A propeller system Chemical rocket engine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a high pressure compressor, the delivery pressure is 10 to 15 bar 5 to 8 bar 1 to 5 bar 8 to 10 bar 10 to 15 bar 5 to 8 bar 1 to 5 bar 8 to 10 bar ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency of compressor with increase in compression ratio will Decrease Remain same Increase May increase or decrease depending on clearance volume Decrease Remain same Increase May increase or decrease depending on clearance volume 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 In jet engines, paraffin is usually used as the fuel because of its High calorific value Low freezing point Both (A) and (C) above Ease of atomisation High calorific value Low freezing point Both (A) and (C) above Ease of atomisation ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In turbo fan engine, the jet velocity as compared to turbojet engine is Less Same More May be less or more depending upon speed Less Same More May be less or more depending upon speed ANSWER DOWNLOAD EXAMIANS APP
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