Compressors, Gas Turbines and Jet Engines Which is false statement about multistage compression? Power consumption per unit of air delivered is low The moisture in air is condensed in the inter-cooler It is best suited for compression ratios around 7:1 Volumetric efficiency is high Power consumption per unit of air delivered is low The moisture in air is condensed in the inter-cooler It is best suited for compression ratios around 7:1 Volumetric efficiency is high ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Free air is the air at 15°C and 1 kg/cm² 0°C and standard atmospheric conditions Atmospheric conditions at any specific location 20°C and 1 kg/cm² and relative humidity of 36% 15°C and 1 kg/cm² 0°C and standard atmospheric conditions Atmospheric conditions at any specific location 20°C and 1 kg/cm² and relative humidity of 36% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure. Greater than Equal to Less than None of these Greater than Equal to Less than None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine blades are given a rake Equal to zero Depending on the velocity In the direction of motion of blades Opposite to the direction of motion of blades Equal to zero Depending on the velocity In the direction of motion of blades Opposite to the direction of motion of blades ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Dia. of L.P. cylinder, and D₂ = Dia. of H.P. cylinder) D₁/D₂ = p₂/p₁ D₁/D₂ = p₁/p₂ D₁/D₂ = p₁ p₂ None of these D₁/D₂ = p₂/p₁ D₁/D₂ = p₁/p₂ D₁/D₂ = p₁ p₂ None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would Increase Decrease Remain same None of these Increase Decrease Remain same None of these ANSWER DOWNLOAD EXAMIANS APP
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