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1
NICET LEVEL 1 - WATER BASED LAYOUT ACTUAL
AND PRACTICE EXAM 200 QUESTIONS AND
ANSWERS AGRADE
NICET LEVEL 1 - WATER BASED LAYOUT PRACTICE
Which of the following should you inspect on an extension cord before each use? - ANSWER>>The grounding prong & the insulation for nicks, cuts, or damage ________ indicates a mandatory req. according to NFPA definitions. - ANSWER>>Shall.
(Ref. NFPA 13 2016, Sec. 3.2.4.) 100 GPM is flowing through 100' of 1 1/4 in. Sch. 40 pipe. How many feet of 1 1/2 in. pipe will produce the same friction loss? - ANSWER>>Assume this is Schedule 40 pipe, C = 120. Use the Hazen-Williams formula to calculate the friction loss for the 1 ¼ in. pipe and the 1 ½ in. pipe.
For 1 ¼ in. pipe (ID = 1.38):
P friction loss = 4.52 x Q 1.85
c 1.85 x d 4.87
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2 P friction loss = 4.52 x 100 1.85
120 1.85 x 1.38 4.87
P friction loss = 0.672 psi/ft
For 1 ½ in. pipe (ID = 1.61):
P friction loss = 4.52 x Q 1.85
c 1.85 x d 4.87
P friction loss = 4.52 x 100 1.85
120 1.85 x 1.61 4.87
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3 P friction loss = 0.317 psi/ft
Step #2: Determine the total friction loss for 100 gpm flowing through 100 ft. of 1 ¼ in.
Schedule 40 black steel pipe: 100 ft. x 0.672 psi/ft = 67.2 psi
Step #3: Determine the pipe length to produce the same friction loss in the 1 ½ in. pipe:
y ft. x 0.317 psi/ft = 67.2 psi
y = 67.2 ÷ 0.317
y = 212 ft.A basic contract: (choose all that apply) - ANSWER>>Contains the names of the parties involved, References the contract documents, Discusses the work that is to be done, and Discusses start and completion dates.Define both the constant, y, and the exponent ,z, for q in the Hazen-Williams friction loss
formula shown Below:
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