Compressors, Gas Turbines and Jet Engines Reheating in a gas turbine Increases the compressor work Increases the thermal efficiency Increases the turbine work Decreases the thermal efficiency Increases the compressor work Increases the thermal efficiency Increases the turbine work Decreases the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For an irreversible gas turbine cycle, the efficiency and work ratio both depend on Maximum cycle temperature alone Pressure ratio alone Minimum cycle temperature alone Both pressure ratio and maximum cycle temperature Maximum cycle temperature alone Pressure ratio alone Minimum cycle temperature alone Both pressure ratio and maximum cycle temperature ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The assumption made in two stage compression with inter-cooler is that All of the listed here There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure The compression in both the cylinders is polytropic All of the listed here There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure The compression in both the cylinders is polytropic 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 Centrifugal Reciprocating Screw Axial Centrifugal Reciprocating Screw Axial ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine cycle with regenerator Increases thermal efficiency Decreases heat loss is exhaust Allows operation at very high altitudes Allows high compression ratio Increases thermal efficiency Decreases heat loss is exhaust Allows operation at very high altitudes Allows high compression ratio 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 = 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 ANSWER DOWNLOAD EXAMIANS APP
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