Plumbing Level 3 Exam Graded A+

128 fluid ounces - ANSWER-In liquid-volume measure using the english system, 1 gallon is equal to 4 quarts or_ metric system - ANSWER-The International System of units is another name for the_ Area - ANSWER-Floor space is measured in_ Isosceles Triangle - ANSWER-A three-sided figure with two sides of equal length is called a(n)_ Improper DWV Venting - ANSWER-A typical cause of siphonage and back pressure is _ Globe valves - ANSWER-The same basic internal parts are used on angle valves, compression faucets, and _ capped - ANSWER-At the end of each workday, all installed pipes should be _ Prevent the water in the disinfecting chamber from cooling the lamp - ANSWER-The purpose of the quartz sleeve in an ultraviolet-light system is to _ hard water - ANSWER-Water that contains a high percentage of minerals is called _ cubic centimeter - ANSWER-Water Hardness is measured in grains per _ Pressure-type vacuum breaker - ANSWER-The water line supplying a swimming pool requires the installation of a(n) _ are not normally fitted with shutoff valves or test cocks - ANSWER-Dual-check valve backflow preventer assemblies are difficult for plumbers to remove, test, or replace because they _ car washes - ANSWER-Plumbing codes require the installation of reduced-pressure zone principle backflow preventer assemblies in _ are equipped with strainers - ANSWER-To prevent clogging by foreign matter in the water, many backflow preventers _ Static Head Loss - ANSWER-The difference in elevation between the supply line and the system's highest fixture is called _ backflow - ANSWER-A cross-connection becomes dangerous when there is a _ the odor of the smoke - ANSWER-If a leak is too small for escaping smoke to be visible, the leak may be detected by _ vent stack - ANSWER-The central vent in a building is the _ hardness - ANSWER-Calcium and magnesium salts in water are the cause of _ green - ANSWER-Acid in the water can react with copper pipes to leave stains that are _ six - ANSWER-The number of types of simple machines is _ multiples of 12 - ANSWER-For calculating area, lengths and widths are expressed in _ scale on the construction drawings - ANSWER-To determine the proper measurements for a floor, always refer to the _ 62.31 pounds - ANSWER-One cubic foot of water has a weight of _ decrease its density but increase its volume - ANSWER-Increasing the temperature of water will _ farthest point of use - ANSWER-An efficient water supply system should provide, under peak demand conditions, adequate pressure to the _ combine several pulleys - ANSWER-To decrease the amount of force needed to lift a load, you can _ basic pulley concept - ANSWER-The wheel and axle is a modification of the _ protect against slipping and electrical shock - ANSWER-On the job, wear rubber-soled shoes or boots to _ provided with appropriate personal protective equipment - ANSWER-In a commercial building, customers who enter the area where you are working should be _ warm, moist air - ANSWER-Condensation on pipes occurs when a cold surface is exposed to _ compressor lubrication oil - ANSWER-In addition to removing moisture from compressed air, refrigeration air dryers are also effective at removing _ an improperly secured hose or coupling - ANSWER-If a compressed-air tool functions poorly because of low air pressure, the cause is most likely _