Chapter 4 - Properties of Water

Question 1 of 20

1

One of the most important properties of water relevant to its use in hydronic systems is specific heat.

Select one of the following:

True
False

Explanation

Question 2 of 20

1

If the material changes phase while absorbing heat, its temperature will change.

Select one of the following:

True
False

Explanation

Question 3 of 20

1

The specific heat of water is high in comparison to other common materials. In fact, water has one of the highest specific heats of any known material.

Select one of the following:

True
False

Explanation

Question 4 of 20

1

The difference in heat capacity of water versus that of air is the single greatest advantage of using water rather than air to convey heat.

Select one of the following:

True
False

Explanation

Question 5 of 20

1

The density of water is not dependent on temperature.

Select one of the following:

True
False

Explanation

Question 6 of 20

1

It is often necessary to determine the quantity of heat stored in a given amount of material that undergoes a specific temperature change. An equation known as the sensible heat quantity equation, can be used for this purpose.

Select one of the following:

True
False

Explanation

Question 7 of 20

1

The quantity of heat absorbed or released from the material is expressed as Btu/hr.

Select one of the following:

True
False

Explanation

Question 8 of 20

1

The rate of heat transfer into or out of the fluid stream in equations is expressed as Btu.

Select one of the following:

True
False

Explanation

Question 9 of 20

1

The vapor pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.

Select one of the following:

True
False

Explanation

Question 10 of 20

1

When hydronic systems are first filled with water, dissolved air is present in the water throughout the system.

Select one of the following:

True
False

Explanation

Question 11 of 20

1

The heat absorbed or released by a material while it remains in a single phase is called __________ heat.

Select one of the following:

radiant
sensible
ambient
latent

Explanation

Question 12 of 20

1

If the material changes phase while absorbing heat, its temperature does not change. The heat absorbed in such a process is called ________ heat.

Select one of the following:

radiant
sensible
ambient
latent

Explanation

Question 13 of 20

1

Although it is not a defined scientific term, it could be said that water is almost _________ times more "thermally concentrated" than air.

Select one of the following:

3
35
350
3500

Explanation

Question 14 of 20

1

Hydronic system designers often need to know the __________ of heat transfer to or from a stream of water flowing through a device such as a heat source or heat emitter.

Select one of the following:

rate
temperature
thermal mass
exact volume

Explanation

Question 15 of 20

1

The ___________ pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.

Select one of the following:

surface
mean
vapor
systemic

Explanation

Question 16 of 20

1

The viscosity of a fluid is an indicator of its resistance to __________.

Select one of the following:

flow
heat
combining
displacement

Explanation

Question 17 of 20

1

The amount of air that can exist in solution with water is strongly dependent on the water's temperature. As water is heated, its ability to hold air in solution __________.

Select one of the following:

rapidly increases
remains constant
is viscosity dependent
rapidly decreases

Explanation

Question 18 of 20

1

When a quantity of liquid water is put under pressure, there is __________ change in its volume.

Select one of the following:

a significant
very little
a corresponding
a formulaic

Explanation

Question 19 of 20

1

The total liquid flow rate entering any portion of a fluid-filled (non-leaking) piping assembly will __________ the total flow rate exiting that assembly.

Select one of the following:

always equal
never equal
might equal
approximate

Explanation

Question 20 of 20

1

Incompressibility implies that liquids can exert tremendous pressure in any type of filled and closed container when they __________ due to heating.

Select one of the following:

contract
dissolve
expand
vaporize

	Created by Neil Revollo about 8 years ago

Quiz #4

Chapter 4 - Properties of Water

Chapter 4 - Properties of Water

Question 1 of 20

One of the most important properties of water relevant to its use in hydronic systems is specific heat.

Select one of the following:

Explanation

Question 2 of 20

If the material changes phase while absorbing heat, its temperature will change.

Select one of the following:

Explanation

Question 3 of 20

The specific heat of water is high in comparison to other common materials. In fact, water has one of the highest specific heats of any known material.

Select one of the following:

Explanation

Question 4 of 20

The difference in heat capacity of water versus that of air is the single greatest advantage of using water rather than air to convey heat.

Select one of the following:

Explanation

Question 5 of 20

The density of water is not dependent on temperature.

Select one of the following:

Explanation

Question 6 of 20

It is often necessary to determine the quantity of heat stored in a given amount of material that undergoes a specific temperature change. An equation known as the sensible heat quantity equation, can be used for this purpose.

Select one of the following:

Explanation

Question 7 of 20

The quantity of heat absorbed or released from the material is expressed as Btu/hr.

Select one of the following:

Explanation

Question 8 of 20

The rate of heat transfer into or out of the fluid stream in equations is expressed as Btu.

Select one of the following:

Explanation

Question 9 of 20

The vapor pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.

Select one of the following:

Explanation

Question 10 of 20

When hydronic systems are first filled with water, dissolved air is present in the water throughout the system.

Select one of the following:

Explanation

Question 11 of 20

The heat absorbed or released by a material while it remains in a single phase is called __________ heat.

Select one of the following:

Explanation

Question 12 of 20

If the material changes phase while absorbing heat, its temperature does not change. The heat absorbed in such a process is called ________ heat.

Select one of the following:

Explanation

Question 13 of 20

Although it is not a defined scientific term, it could be said that water is almost _________ times more "thermally concentrated" than air.

Select one of the following:

Explanation

Question 14 of 20

Hydronic system designers often need to know the __________ of heat transfer to or from a stream of water flowing through a device such as a heat source or heat emitter.

Select one of the following:

Explanation

Question 15 of 20

The ___________ pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.

Select one of the following:

Explanation

Question 16 of 20

The viscosity of a fluid is an indicator of its resistance to __________.

Select one of the following:

Explanation

Question 17 of 20

The amount of air that can exist in solution with water is strongly dependent on the water's temperature. As water is heated, its ability to hold air in solution __________.

Select one of the following:

Explanation

Question 18 of 20

When a quantity of liquid water is put under pressure, there is __________ change in its volume.

Select one of the following:

Explanation

Question 19 of 20

The total liquid flow rate entering any portion of a fluid-filled (non-leaking) piping assembly will __________ the total flow rate exiting that assembly.

Select one of the following:

Explanation

Question 20 of 20