Related Questions

Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible?
A [

A.

B. > 3

B 50
C 1
For hypersonic flow, the Mach number is
A Unity
B Greater than unity
C Greater than 2
D Greater than 4
In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant?
A Rotational
B Unsteady
C Turbulent
D Non-uniform
A point, in a compressible flow where the velocity of fluid is zero, is called
A Critical point
B Vena contracta
C Stagnation point
D None of these
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at
A Diffuser inlet radius
B Diffuser outlet radius
C Impeller inlet radius
D Impeller outlet radius
Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.
A Elastic
B Viscous
C Gravity
D None of these
In case of supersonic flow of a fluid through pipeline, the 'Mach number' is
A 0
B 1
C > 1
When the Mach number is between --------the flow is called supe-sonic flow.
A 1 and 6
B 4 and 6
C 2.5 and 4
D 1 and 2.5
When the Mach number is between __________ the flow is called super-sonic flow.
A 1 and 2.5
B 2.5 and 4
C 4 and 6
D 1 and 6
Upto what value of 'Mach number', a fluid may be considered as incompressible?
A 0.03
B 0.3
C 3
D 10

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