31. Normal shock waves occur in a one dimensional steady-
A. converging flow
B. diverging flow
C. supersonic flow
D. subsonic flow
32. In an axial-flow compressor, stalling is the phenomenon of-
A. Air motion at sonic velocity
B. Airstream blocking the passage
C. The reversed flow of air
D. Airstream not following the blade contour
33. The gas in the cooling chamber of a closed cycle gas turbine is cooled at-
A. constant volume
B. constant temperature
C. constant pressure
D. None of these
34. The pump preferred to be used for pumping highly viscous fluids belongs to the category of-
A. screw pump
B. centrifugal pump
C. plunger pump
D. turbine pump
35. An adjustable blade propeller turbine is called as-
A. Kaplan turbine
B. Pelton turbine
C. Francis turbine
D. Banki turbine