TEST 6

Question 1

1. “Any pipe that passes under a footing or through a foundation wall shall be provided with a relieving arch, or a pipe sleeve, pipe shall be two pipe sizes greater than the pipe passing through the wall.”
   The above statement will protect the pipe against:

A. External corrosion.
B. Freezing.
C. Cave-ins.
D. Breakage.

Answer 1

D. Breakage.

Question 2

2. In a closed tank excessive water pressure can cause a rupture, but excessive water temperature can cause:

A. Scalding.
B. “Banging” in the pipes.
C. Tank collapsing.
D. An explosion.

Answer 2

D. An explosion.

Question 3

3. If the hand operated shut-off valve in a water line is turned to the fully closed position, and water continues to flow through the valve, the most likely defect you would find is:

A. Loose gland.
B. Excessive packing.
C. Improper seating of the valve disc.
D. A loose stuffing nut.

Answer 3

C. Improper seating of the valve disc.

Question 4

4. If the hand operated shut-off valve in a water line is turned to the fully closed position, and water continues to flow through the valve, the most likely defect you would find is:

A. Loose gland.
B. Excessive packing.
C. Improper seating of the valve disc.
D. A loose stuffing nut.

Answer 4

C. Improper seating of the valve disc.

Question 5

5. The best way to prevent a water pocket from forming when two horizontal steam pipes of different diameters are joined is:

A. Use an eccentric fitting.
B. Use a long fitting so that the slope between the pipe is very gradual.
C. Provide a drain cock.
D. Slope the pipe so that the smaller pipe is lower.

Answer 5

A. Use an eccentric fitting.

Question 6

6. A hot water storage tank is 24 inches in diameter and 10 feet in length its capacity, in gallons, is most nearly:

A. 180.
B. 240.
C. 300.
D. 360.

Answer 6

B. 240.

Question 7

7. Tubular brass traps are generally known as:

A. “P” bends.
B. “J” bends.
C. 1/2 “S” bends.
D. “U” bends.

Answer 7

B. “J” bends.

Question 8

8. The one material to be placed above the pipes when back-filling trenches is nearly:

A. Clean medium stones.
B. loose earth free from rocks.
C. Broken concrete.
D. Clean loose cinder fill.

Answer 8

B. loose earth free from rocks.

Question 9

9. Exposed soil or waste piping shall not be installed above:

A. Any bedroom area in residential buildings.
B. any healthcare facilities.
C. Any working, storage or eating surfaces in food surface establishments.
D. Any working area of any type.

Answer 9

C. Any working, storage or eating surfaces in food surface establishments.