Quiz
Chapter 6 - Fluid Flow in Piping
Perguntas do quiz (20)
1In a purely technical sense, the word fluid can mean either a liquid, such as water, or a gas, such as air.
- AVerdadeiro
- BFalso
2Flow velocity is a measurement of the volume of fluid that passes a given location in a pipe in a given time.
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3The static pressure at a given depth below the surface of a liquid remains exactly the same regardless of the diameter of the pipe.
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4Using pressure gauges to detect changes in the head of a liquid is like using thermometers to detect changes in the thermal energy content of that liquid.
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5Each component in a piping assembly or circuit has an associated hydraulic resistance that defines its ability to dissipate thermal energy from the fluid at any given flow rate.
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6Use of pressure drop charts based on 60ºF water will consistently overestimate the pressure drop in hydronic piping circuits because the water will usually be at higher temperatures.
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7The equivalent length of a component is the amount of tubing, of the same pipe size, that would produce the same head loss (or pressure drop), as the actual component, at the same flow rate.
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8The equivalent hydraulic resistance of an entire assembly is always greater than the smallest individual hydraulic resistance.
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9Determining the flow rates in systems with several parallel branches does not require "number crunching."
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10Every piping system should be thought of as having an operating cost as well as an installation cost.
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11The term "flow velocity" is commonly understood to mean the __________ flow velocity of the fluid as it moves through a pipe.
- Apressurized
- Baverage
- Cmaximum
- Dminimum
12A pipe size should be selected that keeps the average flow velocity between _________ ft./sec.
- A.5 and .75
- B1 and 2
- C1 and 3
- D2 and 4
13Fluids in a hydronic system contain both thermal and mechanical energy. The mechanical energy, or ________, present in a fluid depends on several factors including its pressure, density, elevation, and velocity at some point in the system.
- Aflow
- Bcompression
- Chead
- Dpressure
14Whenever a fluid flows, an energy dissipating effect called _________ develops both within the fluid stream and along any surfaces the fluid contacts.
- Aviscous friction
- Bthermal reduction
- Canti-flow
- Dpressure inhibition
15After the hydraulic resistances of all devices in a piping assembly are determined, they can be combined into a(n) ___________ resistance similar to how electrical resistances are combined in circuit analysis.
- Aequivalent
- Bcombined
- Ccalculated
- Daverage
16__________ represents the relationship between flow rate and head loss for a given piping circuit using a specific fluid at a given temperature.
- ASystem heat loss coordination
- BSystem head loss curve
- CSystem flow equation
- DSystem flow/loss calculation
17Copper tubing is also subject to a condition called _________, which can literally scrub metal off the inside wall of a tube or fittings.
- Athermal rusting
- Bfrictional pressure
- Cflow rasping
- Derosion corrosion
18The simplest piping assemblies are formed by connecting piping components end to end. In some cases, the collection of tubing, fittings, valves, and other components closes on itself to form a __________.
- Amulti-resistor system
- Bradiant loop
- Cseries circuit
- Dthermal compound
19A more efficient method can be used in the common situation where the piping circuit contains a(n) __________ of pipe, fittings, and valves.
- Awide variety
- Bsingle size
- Cindustry standard amount
- Duser maintainable
20The piping paths that share common points of connection are said to be piped _________.
- Ain parallel
- Bin series
- Cequivalently
- Dcooperatively
Informações
- Descrição
- Quiz #6
- Autor
- Neil Revollo
- Idioma
- English
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