Category: Compressors, Gas Turbines and Jet Engines

A. peopeller
B. diffuser
C. intercooler
D. turbine and combustion chamber
E. starting engine

A. pressure ratio
B. maximum cycle temperature
C. minimum cycle temperature
D. all of the above
E. none of die above

A. top side of main
B. bottom side of main
C. left side of main
D. right side of main
E. any location

A. rise gradually towards the point of use
B. drop gradually towards the point of use
C. be laid vertically
D. be laid exactly horizontally
E. none of the above

A. ityrequires very big cylinder
B. it does not increase pressure much
C. it is impossible in practice
D. compressor has to run at very slow speed to achieve it
E. it requires cylinder to be placed in water

A. A.C. electric motor
B. compressed air
C. petrol engine
D. diesel engine
E. D.C. electric motor

A. large gas turbines employ axial flow compressors
B. axial flow compressors are more stable than centrifugal type compressors but not as efficient
C. axial flow compressors have high capacity and efficiency
D. axial flow compressors have instability region of operation
E. centrifugal compressors are used mainly on low flow pressure ratio gas turbines

A. increases with increase in compression ratio
B. decreases with increase in compression ratio
C. in not dependent upon compression ratio
D. may increase/decrease depending on compressor capacity
E. unpredictable

A. gas turbine uses low air-fuel ratio to economise on fuel
B. gas turhine uses high air-fuel ratio to reduce outgoing temperature
C. gas turbine uses low air-fuel ratio to develop the high thrust required
D. all of the above
E. none of the above

A. higher
B. lower
C. equal
D. can’t be compared
E. unpredictable