**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