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Aero MCQ

How does the static pressure change inside a fluid

Increases with the depth of the fluid

Decreases with the depth of the fluid

Changes randomly

In a laminar pipe flow, the flow velocity in the pipe centreline is;

Zero

Minimum

Maximum

Shear rate is expressed as

Pressure gradient

Velocity gradient

Density gradient

When a uniform cross-section of a pipe interrupted by the inclusion of pipe fitting such as a valve, junction, etc., what effect does the flow encounter at the interruption sections. (choose the most appropriate answer option)

Flow pressure loss due to flow separation

Flow acceleration

Flow becoming laminar

Specific gravity of a given fluid, is defined as

The ratio of the mass of the fluid to the density of water

The ratio of the density of the fluid to the density of water

The ratio of the mass of the fluid to the density of air

The SI unit of measurements for the fluid Viscosity (µ) is:

Kg.s

Kg/m.s

Kg.m/s

A flow field is best characterized by its;

Mass

Density

Velocity distribution

The flow compressibility increases with;

Flow pressure

Viscosity

Flow velocity

Bernoulli's principles, used to

Relate pressure energies in the flow

Work out flow velocity

Both (a) and (b)

A mass of 50 kg acts on a piston of area 100 cm2. What is the intensity of pressure on the water in contact with the underside of the piston, if the piston is in equilibrium?

49 𝑘𝑃𝑎

49.05 𝑃𝑎

49.05 𝑘𝑃𝑎

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