Term
| The Three phsical states of matter are |
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Definition
1. Solid
2. Liquid
3. Gaseous |
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Definition
| Any more than 100 fundamental subsatnces that consist of atoms of only one kind or combination all matter which can not be reduced by ordinary chemical means |
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Definition
| substance composed by uniting two or more substance or similar elements by chemical action in porportions contains elements |
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Term
| _____ have both a definite volume and a definite shape |
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Definition
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Term
| _____ have a definite volume, but conform to the shape of the container into which they are placed |
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Definition
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Term
| ________have neither a definite volume or shape, but have the ability to diffuse or or expand indefinitely. |
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Definition
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Term
| ______ may be defined as anything that has weight and occupies space or has a measurable volume. |
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Definition
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Term
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Definition
| an tom is a small partical of an element which can exist alone or in combination with other elements. Consists of two parts positive charged cetral and the nucleus. |
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Term
| The two main parts of an atom are the ___ and the ____. |
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Definition
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Term
| List five elements commonly used in the piping industry, and give their chemical symbol |
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Definition
1. Copper (Cu)
2. Lead (Ph)
3. Oxygen (O)
4. Tin (Sh)
5. Iron (Fe) |
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Term
| _______(H) is the lightest element known, with an atomic weight of 1.0080 |
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Definition
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Term
| The melting point of copper(Cu) is 1,083 |
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Definition
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Term
| The difference between the states of matter that water may assume is directly related to __________. |
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Definition
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Term
| Water is most dense at _______ |
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Definition
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Term
| The electric resistance pyrometer operates under the principle that an increase in temperature will cause an increase in the resistance to flow of an electric current |
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Definition
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Term
| The term ____ is the measure of heat required to raise the temperature of one Lb of water to degree F |
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Definition
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Term
| List three terms that directly relate to a temperature change in a known substance |
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Definition
1. Specific heat
2. Sensible heat
3. Latent heat |
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Term
| The amount of heat in Btu required to change the temperature of lb of a substance of one degree F is defined as the _______ of that substance. |
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Definition
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Term
| The quanity of heat involved when any substance undergoes a change in temperature that can be measured with a thermometer is referred to as __________. |
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Definition
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Term
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Definition
| the amount of heat required to raise the temperature of 1 gram |
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Term
| Define the term Latent heat ? |
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Definition
| Amount of heat required to be added to or subtracted from a substance to produce a change of state. |
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Term
| The specific heat of ice is 1.5 |
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Definition
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Term
| Two terms closely related to liquids are _____ and _______. |
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Definition
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Term
| A Scale for measuring the acidity or alkalinity of water is know as the ____ and refers to the active hydrogen atoms of water. |
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Definition
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Definition
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Term
| What are the physical properties of pure water ? |
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Definition
| odorless, colorless and tasteless |
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Term
| How many Btuare required to change 20 gal of water at 212 degree F to steam at 212 degree. |
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Definition
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Term
| The process of converting a liquid into a vapor is called condensation |
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Definition
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Term
| With an increase in pressure, the latent heat content of one ob of saturated steam will __________ |
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Definition
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Term
| For a given pressure, the temperature and volume of saturated steam are fixed |
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Definition
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Term
| The pressure at the bottom of a one ft cube of water is ______ psig. |
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Definition
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Term
| Water pressure is usually measured by means of a _________gage. |
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Definition
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Term
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Definition
| Volume of a confined gas is inversely proportional to the absolute pressure exserted on it provided the temperature remains constant Intial pressure |
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Term
| State Boyle's Law Mathematically |
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Definition
Final volume (V2)=
______________
Initial Volume (V1) |
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Term
| A partial ___________ is any pressure less than atmospheric |
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Definition
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Term
| How does siphonic action empty the (WC) of its contents ? |
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Definition
1. Water enters bowl at rim
2. more water flows over the dam, creating a curtain of water through the passageway
3. creating a partial vacuum
4.passage way is displaced
5. When the passageway is filled, siphonic action is created |
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Term
| How are inches of Hg converted to lb/sq in? |
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Definition
| Inch of Hg may be converted to psi, by multiplying by .491 or dividing by 2.03 the density of Hg in.lb/cu. in |
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Term
| STP is abbreviation for ? |
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Definition
| Standard Temperature and pressure |
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Term
| One in. of Hg column is equal to approximately ____ in of water column. |
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Definition
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Term
| The term feet per second (fps) is an expression used when measuring _______ |
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Definition
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Term
| As a fluid flows through a piping system there is a loss of pressure due to friction .List four factors whcih will affect this pressure loss. |
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Definition
1. Viscosity of fluid
2. Length of pipe
3. Size and type of pipe
4. Number and type of fittings |
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Term
| A quantity of water which flows at a rate of 7.48 gpm equals a quantity of water that flows at a rate of ____ cu.ft/min and _____lb.min |
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Definition
1. 1 cu.ft/min
2. 62.4 lb.min |
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Term
| A venturi operates on the same general principle as an |
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Definition
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Term
| Turbulence caused when a fluid flows through a converter or heat exchanger will increase the efficiency of heat transfer. |
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Definition
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Term
The deman at a laundry tray is 5gpm, whcih is supplied by a 1/2 in. Type L copper tube . What is the velocity of water in the tube in fpm & fps
The velocity is ____fpm or _____fps |
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Definition
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Term
| In a steady flow situation pressure increases as the velocity increases |
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Definition
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Term
| water hammer is less likely to occur with lower velocities |
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Definition
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Term
| High velocities are desirable in a water supply system because they keep the inside of the supply lines scrubbed clean |
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Definition
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Term
| A venturi may be used to create a negative pressure at a desired location |
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Definition
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Term
| List the six simple machine |
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Definition
1. Lever
2. Pulley
3. Wheel and axle
4. inclined plane
5. wedge
6. screw |
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Term
| A ______ lever has the effort applied between the fulcrum and resistance |
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Definition
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Term
| A _______ class lever has the fulcrum between the effort and the resistance |
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Definition
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Term
| What is mechanical advantage? |
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Definition
| Force that performs work to the force which is applied to a machine, disregarding friction |
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Term
| The two most common used of a machine are to change force and speed |
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Definition
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Term
| The work output of a machine is greater than the work input. |
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Definition
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Term
| The work is equal to force x distance and the unit of measurement is ft/lbs. |
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Definition
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Term
| List four examples of 3rd class levers. |
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Definition
1. Broom
2. Tweezers
3. Ice cube tongs
4. Human forarm |
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