3-11.
On a rotary vane pump, which
component houses the ball bearings
and mechanical seals?
1.
Cylinder
2.
Cylinder heads
3.
Rotor and shaft assembly
4.
Cylinder bore
3-12.
To allow for the escape of liquid
between the vanes and-slots of the
rotor, the vanes have relief
grooves on the
1.
forward faces
2.
rear faces
3.
outside tips
4.
inside tips
A.
Rex chain
B.
Direct drive
C.
Falk type-F steelflex
D.
Lovejoy
FIGURE 3-A
IN ANSWERING QUESTIONS 3-13 THROUGH 3-15,
SELECT FROM FIGURE 3-A THE TYPE OF PUMP
COUPLING DESCRIBED IN THE STATEMENT.
3-13.
3-14.
The coupling halves are cushioned
by a formed rubber spider.
1. A
2. B
3. C
4. D
A flexible gridmember engages the
teeth in the hubs to transmit
power.
1. A
2. B
3. C
4. D
3-15.
It resembles small bicycle
sprockets placed side by side with
a double wide chain connecting the
two.
1. A
2. B
3. C
4. D
3-16.
Which type of valve is most
commonly used for throttling fuel
flow?
1.
Globe
2.
Gate
3.
High performance butterfly
4.
Rotary plug
3-17.
What valve design allows no
metal-to-metal contact during
regular operations?
1.
A globe
2.
A gate
3.
A high performance butterfly
4.
A rotary plug
3-18.
What valve should be used where a
straight flow with a minimum amount
of restriction is desired?
1.
A globe
2.
A gate
3.
A high performance butterfly
4.
A modified globe
3-19.
What component on the limitorque
valve operator operates the OPEN
and CLOSE position indicator lights
for the valve?
1.
The handwheel
2.
The console relay switch
3.
The valve stem
4.
The limit switches
3-20.
If a one-way check valve has no
directional flow arrow, how can You
identify which end is the inlet?
1.
It will have female threads
2.
It will have male threads
3. It will have the hinge pin
4.
It is the side without the
hinge pin
17
