Compressors, Gas Turbines and Jet Engines The efficiency and work ratio of a gas turbine plant can be increased by Reheating the air after partial expansion in the turbine Adding heat exchanger All of these Injecting water in/around combustion chamber Reheating the air after partial expansion in the turbine Adding heat exchanger All of these Injecting water in/around combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency can be attained by running the compressor At very high speed At average speed At zero speed At very slow speed At very high speed At average speed At zero speed At very slow speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The maximum delivery pressure in a rotary air compressor is 50 bar 30 bar 20 bar 10 bar 50 bar 30 bar 20 bar 10 bar ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine blades are given a rake Opposite to the direction of motion of blades In the direction of motion of blades Equal to zero Depending on the velocity Opposite to the direction of motion of blades In the direction of motion of blades Equal to zero Depending on the velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines 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 W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) 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 None of these D₁/D₂ = p₁ p₂ D₁/D₂ = p₁/p₂ D₁/D₂ = p₂/p₁ None of these D₁/D₂ = p₁ p₂ D₁/D₂ = p₁/p₂ ANSWER DOWNLOAD EXAMIANS APP
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