Hydraulics and Fluid Mechanics - Mechanical Engineering Questions and Answers

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When the Mach number is less than unity, the flow is called

sub-sonic flow

sonic flow

super-sonic flow

hyper-sonic flow

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When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero

Agree

Disagree

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A flow is called hyper-sonic, if the Mach number is

less than unity

unity

between 1 and 6

none of these

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The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

\(\frac { \mu n^3 N^2 R^2 } { 1800 t }\)

\(\frac { \mu n^3 N^2 R^4 } { 1800 t }\)

\(\frac { \mu n^3 N^2 R^2 } { 3600 t }\)

\(\frac { \mu n^3 N^2 R^4 } { 3600 t }\)