1 of 42
Term
What is the flow rate in feet per second if you have a 10 inch pipe
and a flow rate of 2400 GPM?
Give this one a try later!
Q = 2,500 gpm
2,500/449 = 5.57 cfs = Q 2400/449 = 5.35 cfs = Q
10/12 = 0.83' = D
16/12 = 1.33' = D 0.83 x 0.83 x 0.785 = 0.545 SF =
1.33 x 1.33 x 0.785 = 1.39 sf = A A
.545 x V = 5.35
1.39 x V = 5.57 V = 9.81 fps
V = 4.01 f/s
= 8.018 cf = Q
2 x 2 .785 = 3.14 sf 24/2 = 2' = D
3.14 x V = 3.0 cfs 2 x 2 x 0.785 = 3.14 sf = A
V = 0.955 ft/s 3.14 x V = 8.018
V = 2.55 FPS
, Don't know?
2 of 42
Term
electrons flow from ____ to ____.
Give this one a try later!
"cathode" to "anode" "anode" to "cathode"
"ground" to "neutral" "positive" to "negative"
Don't know?
3 of 42
Term
A 16" pipeline is flowing 2,500 gpm. What is the velocity in fps?
Give this one a try later!
Q = 2,500 gpm Q = 350 gpm
2,500/449 = 5.57 cfs = Q 350/449 = 0.78 cfs = Q
16/12 = 1.33' = D 8/12 = 0.667' = D
1.33 x 1.33 x 0.785 = 1.39 sf = A 0.67 x 0.67 x 0.785 = 0.35 sf = A
, 1.39 x V = 5.57 0.35 x V = 0.78
V = 4.01 f/s V = 2.23 f/s
= 8.018 cf = Q
2 x 2 .785 = 3.14 sf 24/2 = 2' = D
3.14 x V = 3.0 cfs 2 x 2 x 0.785 = 3.14 sf = A
V = 0.955 ft/s 3.14 x V = 8.018
V = 2.55 FPS
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4 of 42
Term
Fire hydrant "A" is located at 130' asl (above sea level) and has a
pressure of 75 psi. One mile downstream fire hydrant "B" is at 70' asl
has a pressure of 92 psi. What is the approximate head loss between
these two points?
Give this one a try later!
A = 75 x 2.31 + 130 = 303 A = 80 x 2.31 + 745 = 929.8
B = 92 x 2.31 + 70 = 282 B = 105 x 2.31 + 685 = 927.55
303 - 282 = 20 ft 929.8 - 927.55 = 2.25' of head loss
A = 95 x 2.31 + 375 = 594.45 A = 120 x 2.31 + 225 = 502.2
B=123 x 2.31 + 310 = 594.13 B = 152 x 2.31 + 180 = 531.12
594.45 - 594.13 = 0.32' of head loss 531.12 - 502.2 = 28.92
Don't know?
5 of 42
Term
What is the flow rate in feet per second if you have a 10 inch pipe
and a flow rate of 2400 GPM?
Give this one a try later!
Q = 2,500 gpm
2,500/449 = 5.57 cfs = Q 2400/449 = 5.35 cfs = Q
10/12 = 0.83' = D
16/12 = 1.33' = D 0.83 x 0.83 x 0.785 = 0.545 SF =
1.33 x 1.33 x 0.785 = 1.39 sf = A A
.545 x V = 5.35
1.39 x V = 5.57 V = 9.81 fps
V = 4.01 f/s
= 8.018 cf = Q
2 x 2 .785 = 3.14 sf 24/2 = 2' = D
3.14 x V = 3.0 cfs 2 x 2 x 0.785 = 3.14 sf = A
V = 0.955 ft/s 3.14 x V = 8.018
V = 2.55 FPS
, Don't know?
2 of 42
Term
electrons flow from ____ to ____.
Give this one a try later!
"cathode" to "anode" "anode" to "cathode"
"ground" to "neutral" "positive" to "negative"
Don't know?
3 of 42
Term
A 16" pipeline is flowing 2,500 gpm. What is the velocity in fps?
Give this one a try later!
Q = 2,500 gpm Q = 350 gpm
2,500/449 = 5.57 cfs = Q 350/449 = 0.78 cfs = Q
16/12 = 1.33' = D 8/12 = 0.667' = D
1.33 x 1.33 x 0.785 = 1.39 sf = A 0.67 x 0.67 x 0.785 = 0.35 sf = A
, 1.39 x V = 5.57 0.35 x V = 0.78
V = 4.01 f/s V = 2.23 f/s
= 8.018 cf = Q
2 x 2 .785 = 3.14 sf 24/2 = 2' = D
3.14 x V = 3.0 cfs 2 x 2 x 0.785 = 3.14 sf = A
V = 0.955 ft/s 3.14 x V = 8.018
V = 2.55 FPS
Don't know?
4 of 42
Term
Fire hydrant "A" is located at 130' asl (above sea level) and has a
pressure of 75 psi. One mile downstream fire hydrant "B" is at 70' asl
has a pressure of 92 psi. What is the approximate head loss between
these two points?
Give this one a try later!
A = 75 x 2.31 + 130 = 303 A = 80 x 2.31 + 745 = 929.8
B = 92 x 2.31 + 70 = 282 B = 105 x 2.31 + 685 = 927.55
303 - 282 = 20 ft 929.8 - 927.55 = 2.25' of head loss
A = 95 x 2.31 + 375 = 594.45 A = 120 x 2.31 + 225 = 502.2
B=123 x 2.31 + 310 = 594.13 B = 152 x 2.31 + 180 = 531.12
594.45 - 594.13 = 0.32' of head loss 531.12 - 502.2 = 28.92
Don't know?
5 of 42
