Compressors, Gas Turbines and Jet Engines The work ratio of a gas turbine plant is defined as the ratio of Actual heat drop and isentropic heat drop Net work output and isentropic heat drop Net work output and heat supplied Net work output and work done by turbine Actual heat drop and isentropic heat drop Net work output and isentropic heat drop Net work output and heat supplied Net work output and work done by turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines With the decrease in compression ratio, the volumetric efficiency Does not change First decrease and then increase Decreases Increases Does not change First decrease and then increase Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by p₂ = p₁. p₃ P₂ = Pa × p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = Pa p₃/p₁ p₂ = p₁. p₃ P₂ = Pa × p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = Pa p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For supplying intermittent small quantity of air at high pressure, following compressor is best suited Axial Screw Reciprocating Centrifugal Axial Screw Reciprocating Centrifugal ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio is used in gas turbines To save fuel To reduce the exit temperature To increase the efficiency To increase the output To save fuel To reduce the exit temperature To increase the efficiency To increase the output ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air-fuel ratio in gas turbines is of the order of 15: 1 30: 1 50: 1. 7: 1 15: 1 30: 1 50: 1. 7: 1 ANSWER DOWNLOAD EXAMIANS APP
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