Formulas And Euivalents Troise. Flashcards
0
Q
- Atmospheric pressure in feet of water head?
A
33.9 feet.
1
Q
- Atmospheric pressure in lbs per sq in?
A
14.7 psi.
2
Q
- Atmospheric pressure in inches of mercury?
A
29.9”.
3
Q
- Weight of 1 cubic inch of water?
A
.0361 lbs.
4
Q
- Weight of 1 cubic inch of mercury?
A
.49 lbs.
5
Q
- What is specific gravity of mercury?
A
13.6 .
6
Q
- Weight of 1 cubic foot of water?
A
62.4 pounds.
7
Q
- Weight of 1 U.S. gallon of water?
A
8.33 pounds.
8
Q
- How many gallons has1 cubic foot of water?
A
7.48 gallons.
9
Q
- How many cubic inches has 1 U.S. gallon of water?
A
231 cu. in.
10
Q
- What is the pressure at the bottom of a column of one foot of water?
A
.434 lb. per sq. in.
11
Q
- What is the pressure in feet of pressure head at the bottom of a column of water that exert pressure 1 lb. per sq. in?
A
2.31 foot or 27.7 inches.
12
Q
- How can you find pressure if you know Head ?
A
Pressure = Height (Head) x .434 for each foot high.
13
Q
- How can you find head of pressure that water will rise if you water pressure?
A
Head in feet = pressure x 2.31
14
Q
- Temperature of freezing of fresh water?
A
32* F.
15
Q
- Temperature of freezing of salt water?
A
27*F.
16
Q
- How can you find dimension of right triangle?
A
C = |** AxA + BxB A = |** CxC - BxB B = |** CxC - AxA.
17
Q
- How can you find tje diameterbofna circle that is equivalent to twongiven circles?
A
D = |** dxd - dxd D = |** dxd + dxd.
18
Q
- Formila for the ratio of pipe capacities?
A
R = |**[D/d)^5, wjere
R - numbernof smaller pipes the larger one will supply.
19
Q
- What number has Pi?
A
22/7 or 3.1416.
20
Q
- Formula for circumference?
A
C = DxPi.
21
Q
- Formula for diameter of circumference?
A
D = C/Pi.
22
Q
- Formula for area of a circle?
A
A = Pi x D x D / 4. A = .7854xDxD. A = Pi x R x R.
23
Q
- Formula area of a triangle?
A
A = base x height / 2.
24
Q
- Volume of a cylindrical tank?
A
A = .7854x DxDxH.
25
Q
- Area of rectangle?
A
A = base x height.
26
Q
- Area of a square rectangle?
A
A = length x width.
27
Q
- Volume of a square or rectangle?
A
A = length x width x height.
28
Q
- Volum of a sphere?
A
V = 3.1416 x D x D x D / 6. V = .5236 x D x D x D.
29
Q
- Volum of a hemisphere?
A
V = .2618xDxDxD.
30
Q
- Area of an ellipse?
A
A = .7854xDxd.
31
Q
- Capacity of water in a cylindrical tank in gallons?
A
C = .0034xD"xD"xH". C = .0408xD"xD"xH'. C = .7854/231xD"xD"xH".
