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
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
The Mach number for hypersonic flow of compressible fluid is
A 1
B > 1
C > 4
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
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 super-sonic flow.
A 1 and 2.5
B 2.5 and 4
C 4 and 6
D 1 and 6
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
Forces acting on a particle settling in fluid are __________ forces.
A Gravitational & buoyant
B Centrifugal & drag
C Gravitational or centrifugal buoyant drag
D External, drag & viscous
Upto what value of 'Mach number', a fluid may be considered as incompressible?
A 0.03
B 0.3
C 3
D 10
For ideally incompressible fluid, the Mach number will be
A 1.5
B 1
C 0
D 5

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