ASSIGNMENT 3
Textbook Assignment:
“Force and Pressure,” chapter 9, pages 9–1 through 9-7; “Hydrostatic
and Hydraulic Machines,” chapter 10, pages 10–1 through 10–10; and
“Machine Elements and Basic Mechanisms,” chapter 11, pages 11–1
through 11–15.
3–1.
3–2.
3-3.
3–4.
3–5.
With which of the following devices
is force measured?
1.
A manometer
2.
A bourdon gauge
3.
A spring scale
4.
A barometer
Pressure is expressed in terms of
1.
distance and density
2.
volume and force
3.
density and volume
4.
area and force
If a cylindrical tank which stands
on end is 4 feet in diameter and
contains 350 pounds of water, the
pressure on the bottom of the tank
is approximately
1.
22 lb per sq ft
2.
28 lb per sq ft
3.
65 lb per sq ft
4.
350 lb per sq ft
At sea level, what is the force of
the atmosphere on each side of a
cube measuring 16 inches on a side?
1.
380 lb
2.
890 lb
3.
2,400 lb
4.
3,840 lb
If the pressure in a steam boiler
that supplies pressure to a piston
4 inches in diameter is 600 pounds
per square inch, the total force
exerted on the piston is
approximately
1.
150 lb
2.
600 lb
3.
2,400 lb
4.
7,500 lb
3-6.
The airbrake cylinder on a railroad
car has a diameter of 8 inches.
The locomotive supplies compressed
air to this cylinder at 90 pounds
pressure per square inch.
How much
force is transmitted to the brake
shoes when the brakes are applied?
1.
720 lb
2.
4,520 lb
3.
5,000 lb
4.
6,500 lb
3–7.
When the pressure being measured
with the gauge shown in textbook
figure 9–4 is decreased, the
linkage end of the Bourdon tube has
a tendency to move so as to cause
the
1.
tube to become less curved
2.
tube to become more curved
3.
pointer to turn clockwise
4.
pointer and gear to turn in
opposite directions
3–8.
In which of the following
situations would a Schrader gauge
be used instead of a Bourdon gauge
or diaphragm gauge?
1.
Measuring the force that air
exerts on an object at sea
level
2.
Measuring pressure in a
hydraulic system in which the
load fluctuates rapidly
3.
Measuring the force that water
exerts on an object at the
bottom of a tank
4.
Measuring air pressure in the
space between inner and outer
boiler casings
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