Compressors, Gas Turbines and Jet Engines The net work input required for compressor with increase in clearance volume Increases/decreases depending on compressor capacity Remains same Decreases Increases Increases/decreases depending on compressor capacity Remains same Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air-fuel ratio in gas turbines is of the order of 50: 1. 15: 1 7: 1 30: 1 50: 1. 15: 1 7: 1 30: 1 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 = Pa p₃/p₁ p₂ = p₁. p₃ p₂ = (p₁ + p₃)/2 P₂ = Pa × p₃/p₁ p₂ = Pa p₃/p₁ p₂ = p₁. p₃ p₂ = (p₁ + p₃)/2 P₂ = Pa × p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine may be improved by Both (A) and (C) above Increasing the compression work Increasing the turbine work Decreasing the compression work Both (A) and (C) above Increasing the compression work Increasing the turbine work Decreasing the compression work ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston. Four strokes One stroke Three strokes Two strokes Four strokes One stroke Three strokes Two strokes ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency can be attained by running the compressor At zero speed At very slow speed At very high speed At average speed At zero speed At very slow speed At very high speed At average speed ANSWER DOWNLOAD EXAMIANS APP
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