Test
Chapter 4 - Properties of Water
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Preguntas del test (20)
1One of the most important properties of water relevant to its use in hydronic systems is specific heat.
- AVerdadero
- BFalso
2If the material changes phase while absorbing heat, its temperature will change.
- AVerdadero
- BFalso
3The 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.
- AVerdadero
- BFalso
4The difference in heat capacity of water versus that of air is the single greatest advantage of using water rather than air to convey heat.
- AVerdadero
- BFalso
5The density of water is not dependent on temperature.
- AVerdadero
- BFalso
6It 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.
- AVerdadero
- BFalso
7The quantity of heat absorbed or released from the material is expressed as Btu/hr.
- AVerdadero
- BFalso
8The rate of heat transfer into or out of the fluid stream in equations is expressed as Btu.
- AVerdadero
- BFalso
9The vapor pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.
- AVerdadero
- BFalso
10When hydronic systems are first filled with water, dissolved air is present in the water throughout the system.
- AVerdadero
- BFalso
11The heat absorbed or released by a material while it remains in a single phase is called __________ heat.
- Aradiant
- Bsensible
- Cambient
- Dlatent
12If the material changes phase while absorbing heat, its temperature does not change. The heat absorbed in such a process is called ________ heat.
- Aradiant
- Bsensible
- Cambient
- Dlatent
13Although it is not a defined scientific term, it could be said that water is almost _________ times more "thermally concentrated" than air.
- A3
- B35
- C350
- D3500
14Hydronic 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.
- Arate
- Btemperature
- Cthermal mass
- Dexact volume
15The ___________ pressure of a liquid is the minimum pressure that must be applied at the liquid's surface to prevent it from boiling.
- Asurface
- Bmean
- Cvapor
- Dsystemic
16The viscosity of a fluid is an indicator of its resistance to __________.
- Aflow
- Bheat
- Ccombining
- Ddisplacement
17The 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 __________.
- Arapidly increases
- Bremains constant
- Cis viscosity dependent
- Drapidly decreases
18When a quantity of liquid water is put under pressure, there is __________ change in its volume.
- Aa significant
- Bvery little
- Ca corresponding
- Da formulaic
19The total liquid flow rate entering any portion of a fluid-filled (non-leaking) piping assembly will __________ the total flow rate exiting that assembly.
- Aalways equal
- Bnever equal
- Cmight equal
- Dapproximate
20Incompressibility implies that liquids can exert tremendous pressure in any type of filled and closed container when they __________ due to heating.
- Acontract
- Bdissolve
- Cexpand
- Dvaporize
Información
- Descripción
- Quiz #4
- Autor
- Neil Revollo
- Idioma
- English
- Visitas
- 180
- Etiquetas
- Valoración
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