Properties and Characteristics of Water and Steam
Matter can exist in what three physical states?
Solid, Liquid, and Gaseous
Hydraulics covers the subject of ________________?
Liquids in motion
Work is the product of _________ times _________?
Force times Distance
Name 3 characteristics of metal
Solid at room temperature
Opaque
Conductor of heat and electricity
What are three basic kinds of corrosion?
chemical
physical
electrochemical
The earths surface is covered by nearly _______ million cubic miles of water?
324
A substance the is ___________ has the ability to flow?
Fluid
List three classifications of levers.
First Class
Second Class
Third Class
Define Alloy
An alloy is a material or substance made up of two or more elements, at least one of which is a metal.
Corrosion-erosion
The Volume of a rectangular is found by obtaining what three measurements?
Length times width times heigth
Define Viscosity
Viscosity may be described as the relative thickness or thinness of a liquid.
What is the equation for mechanical advantage?
M.A. = EA/RA
What does PVC stand for?
Define localized corrosion.
Localized corrosion can be defined as selective attack on a metal by corrosion at small special areas or zones on a metal surface in contact with an environment.
What is a compound?
A compound is a substance composed by uniting two or more simpler substances or similar elements by ordinary chemical action in definite proportions.
In order to have capillary action, a liquid must be more __________ than ____________?
Adhesive than cohesive
Household scissors are an example of _________ class lever.
First
Name 3 advantages of CPVC pipe
Lighter
Less corrosive
faster installation
less reactive
List three troublesome situations that can affect copper tubing.
Aggressive well water
excessive water velocity
pitting caused by residual aggressive flux left inside
The atomic weight of an element is based on the total number of ___________ and __________?
Protons and neutrons.
Head Pressure =____________ X ______________
Height X Density
P = H X D
What is the equation for finding efficiency?
Efficiency = output power / input power
Define Cure time
What are three corrosion resistant materials commonly used in the pipe trades?
galvanization
brass, aluminum and stainless steel
nonmetallic piping materials.