Compressors, Gas Turbines and Jet Engines For supplying intermittent small quantity of air at high pressure, following compressor is best suited Centrifugal Reciprocating Axial Screw Centrifugal Reciprocating Axial Screw ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The clearance volume of the air compressor is kept minimum because It greatly affects volumetric efficiency It allows maximum compression to be achieved It results in minimum work It permits isothermal compression It greatly affects volumetric efficiency It allows maximum compression to be achieved It results in minimum work It permits isothermal compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines During base load operation, the best method of controlling compressor is Variable speed Relief valve Constant speed unloader Start-stop motor Variable speed Relief valve Constant speed unloader Start-stop motor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Water gas is produced by Carbonisation of coal Passing steam over incandescent coke Passing air and a large amount of steam over waste coal at about 65°C Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast Carbonisation of coal Passing steam over incandescent coke Passing air and a large amount of steam over waste coal at about 65°C Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The absolute pressure of air at the outlet of a compressor is called Critical pressure None of the listed here Discharge pressure Back pressure Critical pressure None of the listed here Discharge pressure Back pressure 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
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