Hydraulics and Fluid Mechanics - Mechanical Engineering Questions and Answers

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The flow at critical depth in an open channel is called torrential flow.

Yes

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The torque required to overcome viscous resistance of a footstep bearing is (where Î¼ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)

$\frac { \mu n^2 NR } { 60 t }$

$\frac { \mu n^2 NR^2 } { 60 t }$

$\frac { \mu n^2 NR^3 } { 60 t }$

$\frac { \mu n^2 NR^4 } { 60 t }$

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Coefficient of velocity is defined as the ratio of

actual velocity of jet at vena contracta to the theoretical velocity

area of jet at vena contracta to the area of orifice

actual discharge through an orifice to the theoretical discharge

none of the above

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A differential manometer is used to measure

atmospheric pressure

pressure in pipes and channels

pressure in venturimeter

difference of pressures between two points in a pipe