Compressors, Gas Turbines and Jet Engines The work-done on a compressor will be minimum if air is taken from A source at 0° C A source of low temperature air The atmosphere A source of high temperature air A source at 0° C A source of low temperature air The atmosphere A source of high temperature air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In air breathing jet engine, the jet is formed by expanding Plasma Liquid Solids Highly heated atmospheric air Plasma Liquid Solids Highly heated atmospheric air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Mechanical efficiency of gas turbines as compared to I.C engines is None of these Same Lower Higher None of these Same Lower Higher ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of compression is the ratio of Gauge discharge pressure to the gauge intake pressure Absolute discharge pressure to the absolute intake pressure Pressures at discharge and suction corresponding to same temperature Stroke volume and clearance volume Gauge discharge pressure to the gauge intake pressure Absolute discharge pressure to the absolute intake pressure Pressures at discharge and suction corresponding to same temperature Stroke volume and clearance volume ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The overall isothermal efficiency of compressor is defined as the ratio of Work to compress air isothermally to work for actual compression Isothermal h.p. to the BHP of motor Isothermal h.p. to adiabatic h.p. Power to drive compressor to isothermal h.p. Work to compress air isothermally to work for actual compression Isothermal h.p. to the BHP of motor Isothermal h.p. to adiabatic h.p. Power to drive compressor to isothermal h.p. ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages (W₁/W₂) with perfect intercooling is given by W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) ANSWER DOWNLOAD EXAMIANS APP
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