and the pressure of supply pipe is 120 lbs. per sq. in., what
weight can be lifted if car and plunger weigh 400 lbs. and
the friction of moving parts takes 5% of the power?

6. How many cu. ft. of water per hour will a single
action pump 12 in. dia., 15 in. stroke deliver at 50 double
strokes per minute, when water cylinder is three-fourths full
per stroke?

6. What H. P. will be required to raise the water of
problem 5, 40 ft. above source to a delivery tank?

7. Find the amount of water in gals, that will be pumped
with a 4 in. dia. single action pump with water piston moving
at 100 F. P. M, and cylinder drawing only seven-eighths
full per stroke.
SHOP MATHEMATICS 167

8. What power will be required to pump water 200 ft.
above source with a 12 in. dia. double action water cylinder
moving 100 F. P.M.?

9. Find the power required to pump from a river to a
tank at the top of a factory building 67 ft. from river to top
of tank with an 8 in. dia. single action water piston moving
100 F. P. MJ

10. What steam pressure will be required on the steam
piston of a direct acting pump to deliver water 70 ft. above
source, when the steam and water pistons are both 8 in.
