Category: Compressors, Gas Turbines and Jet Engines

A. lowest
B. highest
C. anything.
D. atmospheric
E. none of the above

A. 20-30%
B. 40-50%
C. 60-70%
D. 70-90%
E. 90-100%

Isothermal compression efficiency, even when running at high speed, can be approached by using
A. multi-stage compression
B. cold water spray
C. both A. and B. above
D. fully insulating the cylinder
E. high stroke

A. to increase the output
B. to increase the efficiency
C. to save fuel
D. to reduce the exit temperature
E. none of the above

A. increases
B. decreases
C. remains same
D. increases/decreases depending on com-pressor capacity
E. unpredictable

A. radial component
B. axial component
C. tangential component
D. resultant component

A. 1.03 kg/cm2
B. 1.06 kg/cm2
C. 1.00 kg/cm2
D. 0.53 kg/cm2
E. 0.5 kg/cm2

A. mass
B. energy
C. flow
D. linear momentum
E. angular momentum

A. adiabatic temperature drop in the stage
B. total temperature drop
C. total temperature drop in the stage
D. total adiabaitc temperature drop
E. difference of maximum and minimum temperature in the cycle

A. provides greater flexibility
B. provides lesser flexibility
C. in never used
D. is used when gas is to be burnt
E. none of the above