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)

None of these
D₁/D₂ = p₂/p₁
D₁/D₂ = p₁ p₂
D₁/D₂ = p₁/p₂

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Compressors, Gas Turbines and Jet Engines
The mean effective pressure of the compressor is the

None of these
Volume of air sucked by the compressor during its suction stroke
Volume of air delivered by the compressor
Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions

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