NICET LEVEL III EXAM QUESTIONS AND ANSWERS 100% CORRECT!
The size of the system riser - ANSWER For a pipe schedule design, the underground supply must be a minimum of? Hose stream demands - ANSWER If pumps serve only sprinklers, they are permitted to be sized to provide the flow needed for the sprinkler system without ____? Assessing their impact on the water supply to the pump - ANSWER The flow demands for equipment not connected to the pump do no need to be taken into considerations, expect for? Pressure tank size = water capacity + air capacity - ANSWER Formula for calculating pressure tank size? Flow available = Flow at test location * [(static pressure - pilot pressure) / (static pressure - residual pressure)]^0.54 - ANSWER Water supply available flow formula: h1+(p1/weight of water)+(v1^2/2*g)=h2+(p2/weight of water)+(v2^2/2*g)+hf - ANSWER Bernoulli's equation: Q1=Qt/((L1/L2)^.54+1) Q2=Qt/((L2/L1)^.54+1) - ANSWER Loop calculation split flow equation with same pipe diameters: Le=L1*(De/D1)^4.87*(Ce/C1)^1.85 Le is new equivalent length L1 is original equivalent length De is pipe diameter of new equivalent length D1 is original pipe diameter Ce is C-factor of new equivalent length C1 is original C-factor Static pressure=friction loss pressure + residual pressure + velocity pressure - ANSWER Static pressure equation: Note: make the smaller pipe equivalent to the large pipe - ANSWER Loop calculation
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