Compressors, Gas Turbines and Jet Engines Rotary compressor is best suited for Small quantity of air at high pressure Large quantity of air at high pressure Large quantity of air at low pressure Small quantity of air at low pressure Small quantity of air at high pressure Large quantity of air at high pressure Large quantity of air at low pressure Small quantity of air at low pressure ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because It does not increase pressure much Compressor has to run at very slow speed to achieve it It requires very big cylinder It is impossible in practice It does not increase pressure much Compressor has to run at very slow speed to achieve it It requires very big cylinder It is impossible in practice ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A gas turbine used in air craft should have Small frontal area and high h.p. Low weight and small frontal area High speed and high h.p. High h.p. and low weight Small frontal area and high h.p. Low weight and small frontal area High speed and high h.p. High h.p. and low weight 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 Propulsive efficiency is defined as ratio of Propulsive power and fuel input Engine output and propulsive power Thrust power and propulsive power Thrust power and fuel energy Propulsive power and fuel input Engine output and propulsive power Thrust power and propulsive power Thrust power and fuel energy ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volume of air delivered in a medium capacity air compressor per unit time is Above 5 m³/s 0.1 to 1.2 m³/s None of these 0.15 to 5 m³/s Above 5 m³/s 0.1 to 1.2 m³/s None of these 0.15 to 5 m³/s ANSWER DOWNLOAD EXAMIANS APP
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