Question Category: Compressors Gas Turbines and Jet Engines

Questions › Category: Compressors Gas Turbines and Jet Engines
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The absolute pressure of air at the outlet of a compressor is called
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For supplying intermittent small quantity of air at high pressure, following compressor is best suited
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In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages (W₁/W₂) with perfect intercooling is given by
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Which of the following statement is correct? (A) The ratio of the discharge pressure to the inlet pressure of air is called compressor efficiency (B) The compression ratio for the compressor is always greater than unity 
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The indicated work per unit mass of air delivered is
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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)
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The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature
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The axial flow compressor is preferred in aircraft gas turbines because of
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Losses in a centrifugal compressor are due to
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When the temperature of air leaving the inter-cooler, in a two stage compression with inter-cooler, is ________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.
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