Fluid Mechanics for Chemical

Friction produced by the formation of wakes is called the ______________ friction?

Byadmin March 10, 2019August 27, 2021

Friction produced by the formation of wakes is called the ______________ friction?

A. Disk
B. Skin
C. Form
D. None of these

Fluid Mechanics for Chemical

The time of oscillation of a floating body is _________________?

The time of oscillation of a floating body is _________________?

A. Longer, if Metacentric height is increased
B. Independent of the Metacentric height
C. Dependent on the buoyant forces only
D. None of these

Read More The time of oscillation of a floating body is _________________?
Fluid Mechanics for Chemical

For flow of fluids through packed bed, the superficial velocity is_________________?

For flow of fluids through packed bed, the superficial velocity is_________________?

A. Less than the average velocity through channels
B. More than the average velocity through channels
C. Dependent on the pressure drop across the bed
D. Same as the average velocity through channels

Read More For flow of fluids through packed bed, the superficial velocity is_________________?
Fluid Mechanics for Chemical

Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) ?

Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) ?

A. √d
B. d1/3
C. d2
D. d2/3

Read More Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) ?
Fluid Mechanics for Chemical

Velocity distribution for flow between two fixed parallel plates_________________?

Velocity distribution for flow between two fixed parallel plates_________________?

A. Varies parabolically across the section
B. Is constant over the entire cross-section
C. Is zero at the plates and increases linearly to the mid-plane
D. None of these

Read More Velocity distribution for flow between two fixed parallel plates_________________?
Fluid Mechanics for Chemical

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is_________________?

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is_________________?

A. Same in both the tubes
B. Greater in 1 mm dia tube
C. Greater in 0.5 mm dia tube
D. Zero in both the tubes

Read More If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is_________________?
Fluid Mechanics for Chemical

In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?

In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?

A. Relative roughness
B. Absolute roughness
C. Friction co-efficient for flows at equal Reynold number
D. All A., B. & C.

Read More In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?