FREE Master Plumber MCQ Questions And Answers
How much grade is typically needed for each liner foot of a domestic drainage pipe?
The size of the drain pipe determines the grade, also known as pitch or fall, for the drain pipe. These plumbing system components are created by master plumbers and other design experts based on the minimal requirements set out by local codes. As a general rule,.25 inch per liner foot of slope is required for a drain with a diameter up to 4 inches.
A laundry chute has gas piping installed.
It is inappropriate to install gas piping in a location that could distribute gas beyond the location of the leak, such as laundry chutes, dumbwaiters, air-circulating ducts, or elevators, which are all prohibited from having gas piping installed in them.
How long can gray water be kept in storage before it can be used to flush a toilet or urinal?
The retention of gray water that will be utilized to flush toilets or urinals may not last longer than 72 hours. Long-term water storage might encourage the growth of microorganisms. The plumbing system does not need this bacteria. For instance, green water in a toilet tank is unattractive and may be dangerous to one's health. The water held in a collection reservoir would be balanced to the fixtures served by a gray water recycling system when it is suitably sized, and the regular daily use of the fixtures will draw down from the reservoir frequently enough to prevent lengthy water storage.
In the course of brazing, flux can only be applied when
Only different metals can be brazed together with flux.
What happens if the size of a 4 inch pipe is decreased in the flow's direction?
Due to the flow direction at the reduction point, waste might accumulate and clog the ping system.
Vacuum pump exhaust must be discharged into the following areas in Med Gas systems:
Exhaust must be sent outside in a manner that reduces the risk of noise and environmental contamination.
Gray water must be _____ when it enters a collection reservoir.
Gray water must first be filtered before entering a gray water collection reservoir. This is necessary to prevent particles from getting into the collection reservoir. There is a chance that some sort of material could end up in the drainage water, even though the fixtures that permit the recycling of gray water shouldn't be conveying solids. These pollutants are prevented from entering the collection of recycled gray water by the filters.