1
For Expert help and assignment solutions, +254707240657
Plumbing Level 3 Questions and Answers
(100% Correct Answers) Already Graded
A+
In liquid-volume measure using the english system, 1 gallon is
equal to 4 quarts or_ —ANS: 128 fluid ounces
The International System of units is another name for the_ —ANS:
metric system
© 2025 Assignment Expert
Floor space is measured in_ —ANS: Area
A three-sided figure with two sides of equal length is called a(n)_
—ANS: Isosceles Triangle
Guru01 - Stuvia
A typical cause of siphonage and back pressure is _ —ANS:
Improper DWV Venting
The same basic internal parts are used on angle valves,
compression faucets, and _ —ANS: Globe valves
At the end of each workday, all installed pipes should be _ —ANS:
capped
The purpose of the quartz sleeve in an ultraviolet-light system is to _
—ANS: Prevent the water in the disinfecting chamber from cooling
the lamp
Water that contains a high percentage of minerals is called _ —
ANS: hard water
Water Hardness is measured in grains per _ —ANS: cubic
centimeter
The water line supplying a swimming pool requires the installation
of a(n) _ —ANS: Pressure-type vacuum breaker
Dual-check valve backflow preventer assemblies are difficult for
plumbers to remove, test, or replace because they _ —ANS: are
not normally fitted with shutoff valves or test cocks
, 2
For Expert help and assignment solutions, +254707240657
Plumbing codes require the installation of reduced-pressure zone
principle backflow preventer assemblies in _ —ANS: car washes
To prevent clogging by foreign matter in the water, many
backflow preventers _ —ANS: are equipped with strainers
The difference in elevation between the supply line and the
system's highest fixture is called _ —ANS: Static Head Loss
A cross-connection becomes dangerous when there is a _ —ANS:
backflow
If a leak is too small for escaping smoke to be visible, the leak may
be detected by _ —ANS: the odor of the smoke
The central vent in a building is the _ —ANS: vent stack
© 2025 Assignment Expert
Calcium and magnesium salts in water are the cause of _ —ANS:
hardness
Acid in the water can react with copper pipes to leave stains that
Guru01 - Stuvia
are _ —ANS: green
The number of types of simple machines is _ —ANS: six
For calculating area, lengths and widths are expressed in _ —ANS:
multiples of 12
To determine the proper measurements for a floor, always refer to
the _ —ANS: scale on the construction drawings
One cubic foot of water has a weight of _ —ANS: 62.31 pounds
Increasing the temperature of water will _ —ANS: decrease its
density but increase its volume
An efficient water supply system should provide, under peak
demand conditions, adequate pressure to the _ —ANS: farthest
point of use
To decrease the amount of force needed to lift a load, you can _
—ANS: combine several pulleys
The wheel and axle is a modification of the _ —ANS: basic pulley
concept
For Expert help and assignment solutions, +254707240657
Plumbing Level 3 Questions and Answers
(100% Correct Answers) Already Graded
A+
In liquid-volume measure using the english system, 1 gallon is
equal to 4 quarts or_ —ANS: 128 fluid ounces
The International System of units is another name for the_ —ANS:
metric system
© 2025 Assignment Expert
Floor space is measured in_ —ANS: Area
A three-sided figure with two sides of equal length is called a(n)_
—ANS: Isosceles Triangle
Guru01 - Stuvia
A typical cause of siphonage and back pressure is _ —ANS:
Improper DWV Venting
The same basic internal parts are used on angle valves,
compression faucets, and _ —ANS: Globe valves
At the end of each workday, all installed pipes should be _ —ANS:
capped
The purpose of the quartz sleeve in an ultraviolet-light system is to _
—ANS: Prevent the water in the disinfecting chamber from cooling
the lamp
Water that contains a high percentage of minerals is called _ —
ANS: hard water
Water Hardness is measured in grains per _ —ANS: cubic
centimeter
The water line supplying a swimming pool requires the installation
of a(n) _ —ANS: Pressure-type vacuum breaker
Dual-check valve backflow preventer assemblies are difficult for
plumbers to remove, test, or replace because they _ —ANS: are
not normally fitted with shutoff valves or test cocks
, 2
For Expert help and assignment solutions, +254707240657
Plumbing codes require the installation of reduced-pressure zone
principle backflow preventer assemblies in _ —ANS: car washes
To prevent clogging by foreign matter in the water, many
backflow preventers _ —ANS: are equipped with strainers
The difference in elevation between the supply line and the
system's highest fixture is called _ —ANS: Static Head Loss
A cross-connection becomes dangerous when there is a _ —ANS:
backflow
If a leak is too small for escaping smoke to be visible, the leak may
be detected by _ —ANS: the odor of the smoke
The central vent in a building is the _ —ANS: vent stack
© 2025 Assignment Expert
Calcium and magnesium salts in water are the cause of _ —ANS:
hardness
Acid in the water can react with copper pipes to leave stains that
Guru01 - Stuvia
are _ —ANS: green
The number of types of simple machines is _ —ANS: six
For calculating area, lengths and widths are expressed in _ —ANS:
multiples of 12
To determine the proper measurements for a floor, always refer to
the _ —ANS: scale on the construction drawings
One cubic foot of water has a weight of _ —ANS: 62.31 pounds
Increasing the temperature of water will _ —ANS: decrease its
density but increase its volume
An efficient water supply system should provide, under peak
demand conditions, adequate pressure to the _ —ANS: farthest
point of use
To decrease the amount of force needed to lift a load, you can _
—ANS: combine several pulleys
The wheel and axle is a modification of the _ —ANS: basic pulley
concept
