True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Plug
cock valves are recommended for refrigeration service. True or False?
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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2.
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A
steam trap that is well suited for a system with pulsating pressure would be a ____
trap? a. | F &
T | c. | upright bucket
trap | b. | Float | d. | flash
trap | | | | |
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3.
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A
trap used where the outlet pressure does not exceed the inlet pressure by 25 percent would be called
an ______.? a. | F &
T | c. | lifting | b. | Bucket | d. | Impulse | | | | |
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4.
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This
type of tubing is typically used on refrigeration systems. a. | Type
K | c. | Type
L | b. | Type
M | d. | Type
DWV | | | | |
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5.
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The
weight of schedule 40, 2 inch steel pipe at 50 feet would be? a. | 160
pounds | c. | 300
pounds | b. | 182.6 pounds | d. | none of the above | | | | |
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6.
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When
flexible hose is used to absorb expansion, it should be installed at _____? a. | Right angle to
the motion of pipe | c. | 90 degrees to
any motion | b. | Straight runs | d. | none of the above | | | | |
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7.
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What
type of valve should only be used for throttling flow in an emergency? a. | Ball | c. | Globe | b. | Gate | d. | Angle | | | | |
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8.
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Expansion valves, otherwise know as ____ valves, give fine control of flow in
small diameter piping. a. | Needle | c. | peach plug | b. | Pin | d. | none of the
above | | | | |
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9.
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A
2” 90 degree long radius elbow is equal to how many feet of pipe
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10.
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What
is the recommended feet per second of flow in a drain line? a. | 4-7
FPS | c. | 2-3
FPS | b. | 9-23
FPS | d. | 1-2
FPS | | | | |
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11.
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Air
vents should be installed at ____ points in the system where air can’t vent back to an expansion
tank? a. | Low | c. | Turning | b. | High | d. | None of the above | | | | |
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