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PLUMBING LEVEL 3 EXAM ACTUAL EXAM 60 QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A
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PLUMBING LEVEL 3 EXAM ACTUAL EXAM 60 QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A
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PLUMBING LEVEL 3 EXAM ACTUAL EXAM 60QUESTIONS AND CORRECT DETAILED ANSWERS |
ALREADY GRADED A
In liquid-volume measure using the english system, 1 gallon is equal to 4 quarts or_ -
ANSWER: 128 fluid ounces
The International System of units is another name for the_ - ANSWER: metric system
Floor space is measured in_ - ANSWER: Area
A three-sided figure with two sides of equal length is called a(n)_ - ANSWER:
Isosceles Triangle
A typical cause of siphonage and back pressure is _ - ANSWER: Improper DWV
Venting
The same basic internal parts are used on angle valves, compression faucets, and _ -
ANSWER: Globe valves
At the end of each workday, all installed pipes should be _ - ANSWER: capped
The purpose of the quartz sleeve in an ultraviolet-light system is to _ - ANSWER:
Prevent the water in the disinfecting chamber from cooling the lamp
Water that contains a high percentage of minerals is called _ - ANSWER: hard water
Water Hardness is measured in grains per _ - ANSWER: cubic centimeter
The water line supplying a swimming pool requires the installation of a(n) _ -
ANSWER: Pressure-type vacuum breaker
Dual-check valve backflow preventer assemblies are difficult for plumbers to
remove, test, or replace because they _ - ANSWER: are not normally fitted with
shutoff valves or test cocks
Plumbing codes require the installation of reduced-pressure zone principle backflow
preventer assemblies in _ - ANSWER: car washes
To prevent clogging by foreign matter in the water, many backflow preventers _ -
ANSWER: are equipped with strainers
The difference in elevation between the supply line and the system's highest fixture
is called _ - ANSWER: Static Head Loss
A cross-connection becomes dangerous when there is a _ - ANSWER: backflow
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