1031. The discharge through a pipe in laminar flow varies:

A. In the form of the square of the radius*
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the diameter

1032. Boundary layer separation is caused by :

A. Reduction of pressure below vapour pressure
B. Reduction of pressure gradient to zero
C. An adverse pressure gradient *
D. Diminishing the thickness of the boundary layer to zero

1033. When turbulent flow occurs in a hydraulically smooth pipe, the friction factor is:

A. Depends only on Reynold number *
B. Does not depend on Reynolds number
C. Depends on the roughness
D. None of these

1034. For a given Reynolds number, further smoothing the friction factor in hydraulically smooth pipe:

A. Does not result in any additional
B. Increases
C. Decreases
D. None of these

1035. Hydraulic radius is the ratio of :

A. Wetted perimeter to flow area
B. flow area to wetted perimeter *
C. Square of wetted perimeter’s flow area
D. Wetted perimeter divided by flow area in square roots

1036. Hydraulic radius 6″ * 12″ cross-section is ________ inches :

A. 2 *
B. 0.5
C. 1.5
D. None of these

1037. Reynolds number is the proportion of :

A. Viscous forces to gravity forces
B. Inertial forces to viscous forces *
C. Viscous forces to inertial forces
D. Inertial forces to gravity forces

1038. The ratio of the speed of the to the Mach number is:

A. Fluid to that of the light
B. Light to that of the fluid
C. Liquid to that of the sound *
D. Sound to that of the fluid

1039. Power loss is an orifice meter is _____________ that in a venturimeter :

A. Less than
B. Same as
C. More than *
D. Data insufficient , cannot be predicted

1040. The speed profile for fierce move through a shut channel is :

A. Logarithmic *
B. Parabolic
C. Hyperbolic
D. Linear