Bennett Mechanical Test Fluid Mechanics and Hydraulics 5

Question 1

Liquid pressure at a given depth depends on:

Accepted Answer

The depth and the fluid's density

Answer

The shape of the container only

Answer

The width of the container only

Answer

The color of the liquid

Question 2

A water tower is built tall mainly to:

Accepted Answer

Provide high pressure from gravity to the homes below

Answer

Catch more rain

Answer

Keep water cold

Answer

Reduce evaporation

Question 3

In two connected containers of different shapes filled with the same liquid, the liquid level will:

Accepted Answer

Be the same height in both

Answer

Be higher in the wider container

Answer

Be higher in the narrower container

Answer

Depend on the container color

Question 4

A dam is built much thicker at its base than at its top because:

Accepted Answer

Water pressure is greatest at the bottom

Answer

It looks stronger

Answer

The top freezes

Answer

Water pressure is greatest at the top

Question 5

Which factor does NOT affect the pressure at the bottom of a tank of still water?

Accepted Answer

Surface area of the bottom

Answer

Depth of the water

Answer

Density of the water

Answer

Gravitational acceleration

Question 6

A siphon can move water over the edge of a container without a pump mainly because of:

Accepted Answer

Atmospheric pressure and gravity

Answer

Magnetism

Answer

Surface tension alone

Answer

Heat from the water

Question 7

Compared to fresh water, an object placed in denser salt water will:

Accepted Answer

Float higher

Answer

Sink deeper

Answer

Stay at the same level

Answer

Dissolve faster