Electrical Engineering Questions
Explore questions in the Electrical Engineering category that you can ask Spark.E!
Which of the following is NOT one of the 4 main plumbing systems?
If a backhoe operator accidentally digs up a yellow plastic pipe while excavating a trench, he likely just dug up a _____.
A type of pump that uses a double-suction propeller, and is often used in larger applications where higher flow rate and higher pressure are required is known as a:
What functions can different plumbing valves perform?
After the domestic cold water lines pass the meter, it typically will split and branch into multiple locations. Which of the following are POSSIBLE places that the cold water will go to (Select ALL that apply).
Which of the following is black steel pipe NOT used for:
In plumbing terms, a device fastened to the ends of pipes (or tubes) to make connections between individual pipes or tubes (often to create a change in direction of flow or capacity) is known as what?
Why is IAQ such a difficult concept to understand and manage?
As long as there is a slight pitch (anything over perfectly horizontal) to plumbing drain pipes, all of the waste will flow.
What piece of equipment removes excessive amounts of positively charged minerals (mainly calcium and magnesium) that may be present in water by using a negatively charged compound (typically Brine) and an ion-exchanger?
Typically full-way on or off, but can throttle flow. Also used to divert fluid (3-way, 4-way, etc.)
The type of venting system that uses drain lines of one (or more) fixtures as a vent for other fixtures in the same group is known as:
Why would you install a drain tile at the footing of a building?
Match (or label) the following circumstances as either advantages or disadvantages of using PEX tubing instead of Copper.1. Longevity2. Level of installation difficulty3. cost of material4. durability
Prevents Backflow, requires pressure from fluid to allow mechanism to open.
"In public coin-operated laundries and in the central washing facilities of multiple-family dwellings, the rooms containing automatic clothes washers must be provided with floor drains located to readily drain the entire floor area. Such drains shall have a minimum outlet of not less than ______________ . A. 2-inch-diameter (51 mm) B. 3-inch-diameter (76 mm) C. 4-inch-diameter (102 mm) D. 5-inch-diameter (128 mm)!"
"A drainage branch pipe extending laterally from a soil or waste stack or building drain, with or without vertical sections or branches, that receives the discharge from two or more fixture drains or branches and conducts the discharge to the soil or waste stack or to the building drain. A. HORIZONTAL BRANCH DRAIN B. LEADER C. INTERCEPTOR D. MANIFOLD!"
"Waste outlets in showers must have removable strainers not less than _________________ with strainer openings not less than 0.25 inch (6.4 mm) in minimum dimension. A. 1 1/4 inches (32 mm) B. 1 1/2 inches (38 mm) C. 2 inches (51 mm) D. 3 inches (76 mm) in diameter!"
"Pipe and pipe fittings, including valves and faucets, utilized in the water supply system must have a maximum of ______________ lead content. A. .08-percent B. 2-percent C. 4-percent D. 8-percent E. no lead allowed!"
"All water pressure tanks must be provided with a vacuum relief valve at the top of the tank that will operate up to a maximum water pressure of __________________ and up to a maximum temperature of 200ºF (93ºC). Exceptions ignored. A. 160 psi (1104 kPa) B. 180 psi (1242 kPa) C. 200 psi (1380 kPa) D. 212 psi (1463 kPa)!"