Cornell Pump Company Pump School 2017 Quiz #3

Friction loss comparison between pipes. Which is true?

Larger diameter pipe will have less friction loss per 100’ than a smaller diameter pipe

Smaller diameter pipe will have less friction loss per 100’ than a larger diameter pipe

Smaller and larger diameter pipe will have the same friction loss per 100’ of pipe

12) What is the approximate atmospheric pressure of water at sea level; and how many feet of mercury does pressure change with each 1000 feet increase in elevation?

50’ of atmospheric pressure at sea level; 2’ of change per 1000 increase or decrease in elevation

20’ of atmospheric pressure at sea level; no change per 1000 increase or decrease in elevation

32’ of atmospheric pressure at sea level; 1’ of change per 1000 increase or decrease in elevation

0’ of atmospheric pressure at sea level; -4’ of change per 1000 increase in elevation

13) Total Dynamic Head (TDH) is a measure of total equivalent height that a fluid is to be pumped. It can described by one of the following equations:

TDH = Static Height + Static Lift + Friction Loss

TDH= NPSHr

TDH = Flow * Friction Loss

None of these

What fluid velocity best carries heavy solids (rags) through a pipe?

Less than 1 foot per second

5 to 7 Feet per second

1 to 3 Feet per second

15 to 17 Feet per second

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Cornell Pump Company Pump School 2017 Quiz #3

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