Fluid Mechanics Fundamentals

One litre of water occupies a volume of

• 100 cm³

• 500 cm³

• 250 cm³

• 1000 cm³

Fluids are

• gases

• liquids

• gases or liquids

• non-metallic

Which of following is a fluid?

• helium

• iron

• ice

• gold

Which of the following is NOT a fluid?

• bitumen

• aluminium

• seawater

• mercury

To obtain the absolute pressure from gauge pressure,

• substract atmospheric pressure

• add atmospheric pressure

• substract 273

• add 273

The physical properties which influence the fluid motion is ______________.

• density

• compressibility

• specific volume

• viscosity

The specific gravity of a liquid has

• no unit

• same unit as mass density

• same unit as specific weight

• same unit as specific volume

The density of water is ___________

• 1 kg/m³

• 100 kg/m³

• 1000 kg/m³

• 0.1 kg/m³

Which of the following statement is FALSE?

• a fluid flows

• fluid has definite shape

• fluid changes its shape easily

• molecules of fluid are free to move pas teach other

If there is a bucket full of oil and bucket full of water and you are asked to lift them, which one of the two will require more effort given the volume of buckets remains the same?

• oil bucket

• water bucket

• equal effort to lift both bucket

• none of the mentioned