Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
Which of the follwing is not considered one of the five basic components of a
hydraulic system?
a. | Pressure | d. | Conductor | b. | Control Device | e. | Power output device | c. | Liquid |
|
|
|
2.
|
Pressure is equal to force divided by ______________.
a. | weight | c. | gas | b. | liquid | d. | area |
|
|
|
3.
|
Which of the following is not considered part of the power unit?
a. | Pump | c. | Actuator | b. | Reservoir | d. | Prime Mover |
|
|
|
4.
|
Which of the following is not shown in a hydraulic schematic?
a. | Liquid | d. | Relief Valve | b. | Pump | e. | Pressure guage | c. | Actuator |
|
|
|
5.
|
Quick-connect fittings have a _________ valve built in.
a. | directional control | d. | flow control | b. | relief | e. | sequence | c. | check |
|
|
|
6.
|
A(n) ____________ fitting is used when you want to connect two circuits to a
single supply.
a. | reducer | d. | tee | b. | quick-connect | e. | elbow | c. | bushing |
|
|
|
7.
|
The most common type of pressure gauge is the _____________.
a. | piston | c. | Bourdon tube | b. | linkage | d. | temperature |
|
|
|
8.
|
Another name for a cylinder would be a(n) _____________.
a. | power input device | c. | control device | b. | valve | d. | actuator |
|
|
|
9.
|
A double acting cylinder will extend when oil flows into the
________________.
a. | rod end | c. | cap end | b. | piston | d. | rod |
|
|
|
10.
|
A directional control valve is used to ______________.
a. | change the direction of the fluid | c. | inform the operator of a
problem | b. | limit the pressure | d. | start the power unit |
|
|
|
11.
|
The spool of a directional control valve is shifted to different positions by
the ________.
a. | fluid | c. | conductor | b. | operator | d. | cylinder |
|
|
|
12.
|
Fluid power deals with the transmission and control of energy by a pressurized
_________.
a. | vessel | c. | electric motor | b. | directional control valve | d. | fluid |
|
Matching
|
|
|
Segment 1
a. | force | d. | mechanical | b. | pascals | e. | liquid | c. | actuator |
|
|
|
13.
|
The power output device of a hydraulic system is known as the
_________.
|
|
|
14.
|
Hydraulics uses a(n) _________ to transmit power.
|
|
|
15.
|
Pressure is a measure of _______ intensity.
|
|
|
16.
|
The units of pressure measurement used in the S.I. system are _______.
|
|
|
17.
|
The actuator converts hydraulic energy into ________ energy.
|
|
|
Segment 2
a. | temperature | e. | strainer | b. | filler/breather | f. | limit | c. | prime
mover | g. | CW | d. | minimum |
|
|
|
18.
|
To increase the pressure setting of a relief valve, turn the adjustment knob
_________.
|
|
|
19.
|
Power units normally are started and stopped with the relief valve set at
__________.
|
|
|
20.
|
The purpose of a relief valve is to __________ system pressure.
|
|
|
21.
|
The liquid level guage often gives you the oil’s ________ as well as its
level.
|
|
|
22.
|
The __________ is where the oil can be poured into the resevoir to refill
it.
|
|
|
23.
|
Pumps always have a(n) ____________ attached to their suction lines to clean
the oil.
|
|
|
24.
|
The main components of a hydraulic power unity are the pump, reservoir, and
__________.
|
|
|
Segment 3
a. | frequently
disconnect | d. | Bourdon tube | b. | tee | e. | ISO | c. | schematic
diagram |
|
|
|
25.
|
A(n) _____________ is a form of visual shorthand that makes hydraulic circuits
easier to draw and read.
|
|
|
26.
|
The worldwide standard for hydraulic symbols is developed by the
______.
|
|
|
27.
|
A quick-connect fitting is used whenever there is a need to __________.
|
|
|
28.
|
Two branch circuits are connected with a(n) __________.
|
|
|
29.
|
A(n) _________ pressure gauge used a curved tube to indicate pressure.
|
|
|
Segment 4
a. | operator | f. | flow | b. | double-acting | g. | B | c. | normal | h. | valve | d. | cylinder | i. | spring | e. | pressure | j. | stop in mid-position |
|
|
|
30.
|
The actuator that produces linear motion is called a(n) _________.
|
|
|
31.
|
The number of ways that a directional control valve has defines the number of
________ paths for the fluid to travel through the valve.
|
|
|
32.
|
Applications use 3-position, 4-way DCV’s to provide 3-function control of
the cylinder: extend, retract, and _________.
|
|
|
33.
|
The lever is just one type of ________ method of moving the spool from one
position to the other.
|
|
|
34.
|
Double-acting cylinder direction can be reversed by switching the hose
connections at the ________ or at the cylinder.
|
|
|
35.
|
The type of cylinder that needs to be powered in both directions is called a(n)
__________ cylinder.
|
|
|
36.
|
The spool of a 3-position DCV is held in the middle position by the
____________.
|
|
|
37.
|
A Cylinder rod moves when the __________ against the piston reaches a point
that can no longer be resisted by the piston.
|
|
|
38.
|
The crossed arrows DCV condition causes Port P to connect to Port ______.
|
|
|
39.
|
A schematic is usually drawn with connections drawn to the ________ condition
flow envelope of the DCV.
|