Compressors, Gas Turbines and Jet Engines The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation 1.0% 5% 0.1% 0.5% 1.0% 5% 0.1% 0.5% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Inter-cooling in multistage compressors is done To enable compression in two stages To cool the air at delivery To minimize the work of compression To cool the air during compression To enable compression in two stages To cool the air at delivery To minimize the work of compression To cool the air during compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Separators are generally used in air compressor installations Before first stage suction Before the inter-cooler Between the after-cooler and receiver After the inter-cooler Before first stage suction Before the inter-cooler Between the after-cooler and receiver After the inter-cooler ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Which of the following statement is correct as regard to centrifugal compressors? The flow of air is parallel to the axis of the compressor The maximum efficiency is higher than multistage axial flow compressors The static pressure of air in the impeller increases in order to provide centripetal force on the air The impeller rotates at high speeds The flow of air is parallel to the axis of the compressor The maximum efficiency is higher than multistage axial flow compressors The static pressure of air in the impeller increases in order to provide centripetal force on the air The impeller rotates at high speeds ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Efficiency of gas turbine is increased by Reheating Adding a regenerator Inter cooling All of the listed here Reheating Adding a regenerator Inter cooling All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For maximum work, the reheating should be done to an intermediate pressure of (Where p₁ = Maximum pressure, and p₂ = Minimum pressure) p₁/p₂ (p₁ + p₂)/2 p₁ p₂ (p₁ - p₂)/2 p₁/p₂ (p₁ + p₂)/2 p₁ p₂ (p₁ - p₂)/2 ANSWER DOWNLOAD EXAMIANS APP
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