Math

Question 1

Volume of a cylinder

Answer 1

Area of circle x Length

Question 2

1 BHP = how many BTU

Answer 2

33475

Question 3

1 BHP = how many pounds of steam

Answer 3

34.5

Question 4

1 vertical water column = psi

Answer 4

.433

Question 5

F to C

Answer 5

C = (f-32)/1.8

Question 6

C to f

Answer 6

F = (1.8xc) +32

Question 7

SWP =

Answer 7

Area of stay x stress constant/ pitch x pitch

Question 8

HS OF TUBES =

Answer 8

Circumference x length x # of tubes

Question 9

Hp = how much work

Answer 9

33000 ft lbs a minute

Question 10

Mawp=

Answer 10

tensile strength x metal thickness x joint efficiency / safety factor x boiler radius in inches

Question 11

Pounds of steam /hr =

Answer 11

Quantity of fuel burned x heating value x boiler efficiency / 1100

Question 12

Factor of evap

Answer 12

Btus / lb of steam - (feedwater - 32)/ 970.3

Question 13

DBHP=

Answer 13

Pounds of steam per hour x f.e. / 34.5

Question 14

Thermal efficiency =

Answer 14

Pounds of steam an hour [btu content of steam-(feedwater -32)] / units of fuel x btu content per unit of fuel

Question 15

Bursting pressure

Answer 15

Mawp x Safety factor

Question 16

Gpm=

Answer 16

Lane/231

Question 17

How many cubic inches in a gallon

Answer 17

231

Question 18

Total head =

Answer 18

Discharge head + friction head - suction head
Or
Discharge head + friction head + suction lift

Question 19

1 inch of mecury = how many psi

Answer 19

.491 psi

Question 20

How many pounds in 1 gallon

Answer 20

8.33 lbs