331.
332.
333.
The speed of a ship can be
determined from a pitometer log by
1.
multiplying the reading on the
pitometer log by a constant
factor which is dependent upon
the characteristics of the ship
2.
combining the reading of the
pitometer log with the reading
of the engine revolution
counter
3.
dividing the reading by the
density of the water
4.
reading it directly from the
calibrated scale
A hydraulic machine is one which
operates as a result of forces
transmitted by
1.
mechanical energy
2.
electrical energy
3.
steam in a closed space
4.
liquid in a closed space
A closed hydraulic system will not
operate properly if air is present
in the lines or cylinders because
1.
air is highly compressible and
cannot be used to transmit
forces
2.
air, being compressible, would
not transmit the applied
pressure
3.
air interferes with the proper
operation of the valves
4.
air increases the pressure in
both cylinders
3-34.
Which of the following is NOT a
true statement concerning
transmission of pressure in a
liquid in a closed space?
1.
Pressure applied to any part of
the liquid is transmitted
equally to all points in the
liquid
2.
Pressure applied to any part of
the liquid is transmitted to
all points in the liquid
without loss
3.
Pressure in the liquid causes
it to expand and increase in
density
4.
Pressure in the liquid acts at
right angles to the walls of
the container regardless of the
shape of the container
335.
Which of the following has NO
relationship to the mechanical
advantage of a hydraulic machine
with one small and one large
piston?
1.
The area of the small piston
2.
The area of the large piston
3.
The length of the connecting
tube
4.
The distances the two pistons
move
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