Compressors, Gas Turbines and Jet Engines For minimum work in multistage compression, assuming same index of compression in all stages Work done in subsequent stages should decrease Work done in first stage should be more Work done in subsequent stages should increase Work done in all stages should be equal Work done in subsequent stages should decrease Work done in first stage should be more Work done in subsequent stages should increase Work done in all stages should be equal ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In gas turbines, high thermal efficiency is obtained in Closed cycle Closed cycle & Open cycle Closed/open depending on other considerations Open cycle Closed cycle Closed cycle & Open cycle Closed/open depending on other considerations Open cycle ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The type of rotary compressor used in aeroplanes, is of Axial flow type None of these Centrifugal type Radial flow type Axial flow type None of these Centrifugal type Radial flow type ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a high pressure compressor, the delivery pressure is 8 to 10 bar 1 to 5 bar 10 to 15 bar 5 to 8 bar 8 to 10 bar 1 to 5 bar 10 to 15 bar 5 to 8 bar ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is Compressed air before entering the combustion chamber is heated Heated Bled gas from turbine is heated and readmitted for complete expansion Exhaust gases drive the compressor Compressed air before entering the combustion chamber is heated Heated Bled gas from turbine is heated and readmitted for complete expansion Exhaust gases drive the compressor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio is used in gas turbines To reduce the exit temperature To increase the output To save fuel To increase the efficiency To reduce the exit temperature To increase the output To save fuel To increase the efficiency ANSWER DOWNLOAD EXAMIANS APP
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