4-6.
Which of the following statements
describes hydraulic pressure
gauges?
1.
The tube is designed for
hydraulic fluids only
2.
The gauge is designed to
operate at higher pressures
3.
Some gauges are designed with
a special type of
spring-loaded linkage to
prevent damage
4.
All of the above
4-7.
Gauges having bellows elements
are used only for pressure
indicating.
1.
True
2.
False
4-8.
Which of the following is NOT a
function of pressure switches?
1.
Indicating pressure
2.
Energizing an auxiliary
control system
3.
De-energizing an auxiliary
control system
4.
Signaling a visual warning or
audible alarm when a preset
pressure is reached
4-9.
The pressure switch sensing
element operates on the same
principle as the Bourdon-tube
pressure gauge.
1.
True
2.
False
4-10.
A change in which of the
following properties is the basis
of operation of the bimetallic
thermometer?
1.
Chemical
2.
Electrical
3.
Physical
4.
All of the above
4-11.
What is the maximum length, in
feet, of the capillary tube of
distant-reading thermometers?
4-12.
Distant-reading thermometers
operate similarly to Bourdon-
tube pressure gauges.
1.
True
2.
False
4-13.
In the operation of pressure
gauges within a hydraulic system,
what does a gauge snubber do?
1.
Dampens out system pressure
surges and oscillations to
the gauge,
thereby preventing
internal damage
2.
Prevents hydraulic pressure
indicators from oscillating,
thereby ensuring an accurate
system pressure reading
3.
Both 1 and 2 above
4.
Meters the flow of
pressurized hydraulic fluid
from the gauge or
transmitter, thereby
preventing internal damage
Learning Objective:
Recognize
functions,
operating requirements
and characteristics, and
construction features of
hydraulic reservoirs and the
functions of related components.
4-14.
The reservoir serves the primary
function of storing the hydraulic
fluid required by the system,
Which of the following secondary
functions does it also serve?
1.
Separates air from the system
2.
Dissipates heat
3.
Traps foreign matter
4.
All of the above
4-15.
The baffles In a reservoir serve
which of the following functions?
1.
Dissipate heat
2.
Trap foreign matter
3.
Separate air form the system
4.
All of the above
1.
50
2.
75
3.
100
4.
125
25