PLUMBING LEVEL 3 EXAM 2023-2024 ACTUAL EXAM 60
QUESTIONS AND CORRECT DETAILED ANSWERS
|ALREADY GRADED A
A cross-connection becomes dangerous when there is a _ - ANSWER- backflow
If a leak is too small for escaping smoke to be visible, the leak may be detected by _ - ANSWER- the odor of the smoke
The central vent in a building is the _ - ANSWER- vent stack
Calcium and magnesium salts in water are the cause of _ - ANSWER- hardness
Acid in the water can react with copper pipes to leave stains that are _ - ANSWER- green
The number of types of simple machines is _ - ANSWER- six
For calculating area, lengths and widths are expressed in _ - ANSWER- multiples of 12
To determine the proper measurements for a floor, always refer to the _ - ANSWER- scale on the construction drawings 1 / 2
One cubic foot of water has a weight of _ - ANSWER- 62.31 pounds
Increasing the temperature of water will _ - ANSWER- decrease its density but increase its volume
An efficient water supply system should provide, under peak demand conditions, adequate pressure to the _ - ANSWER- farthest point of use
To decrease the amount of force needed to lift a load, you can _ - ANSWER- combine several pulleys
The wheel and axle is a modification of the _ - ANSWER- basic pulley concept
On the job, wear rubber-soled shoes or boots to _ - ANSWER- protect against slipping and electrical shock
In a commercial building, customers who enter the area where you are working should be _ - ANSWER- provided with appropriate personal protective equipment
Condensation on pipes occurs when a cold surface is exposed to _ - ANSWER- warm, moist air
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