Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency, even when running at high speed, can be approached by using Multistage compression Cold water spray Fully insulating the cylinder Both (A) and (B) above Multistage compression Cold water spray Fully insulating the cylinder Both (A) and (B) above ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A rotary compressor is driven by an Either (A) or (B) Engine Electric motor None of these Either (A) or (B) Engine Electric motor None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ramjet engine Is self operating at zero flight speed Requires no air for its operation Produces a jet consisting of plasma Is not self operating at zero flight speed Is self operating at zero flight speed Requires no air for its operation Produces a jet consisting of plasma Is not self operating at zero flight speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In the aircraft propellers All of these The propulsive matter is caused to flow around the propelled body Propulsive matter is ejected from within the propelled body Its functioning does not depend on presence of air All of these The propulsive matter is caused to flow around the propelled body Propulsive matter is ejected from within the propelled body Its functioning does not depend on presence of air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity U < Vo V = Uo Vi = Vo Vt > Vo U < Vo V = Uo Vi = Vo Vt > Vo ANSWER DOWNLOAD EXAMIANS APP
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