WorksheetsHydraulics Chapter 11 Filtration
Total questions: 20
Worksheet time: 10mins
One micron equals one millionths of ________.
a centimeter
an inch
a meter
a millimeter
A micron is also known as a ______.
microcentimeter
micrometer
microinch
micromillimeter
Which of the following filter devices will provide the finest particle filtration?
60 wire mesh
100 wire mesh
200 wire mesh
325 wire mesh
Which of the following filter devices will have the largest micron rating?
60 wire mesh
100 wire mesh
200 wire mesh
325 wire mesh
All of the following are disadvantages of a strainer/screen, EXCEPT?
difficult to replace
difficult to determine if it is plugged
likely to cause pump cavitation if it is plugged
expensive
Which of the following strainers will require a reservoir with an access panel?
side-mounted suction strainer
in-tank suction strainer
Both A and B
Neither A nor B
Which of the following is the best measure of a filter's proficiency in capturing contaminants?
nominal rating
absolute rating
beta rating
collapse rating
Which of the following devices removes only large particles?
suction screen
suction filter
return filter
kidney loop filter
Which of the following filtration devices is used to prevent small particles from entering a pump's inlet?
suction screen
suction filter
high-pressure filter
actuator filter
Which of the following filtration devices operates at a lower pressure range?
actuator filter
high-pressure filter
charge pressure filter
return filter
Which of the following filtration devices is most sensitive to flow surges?
actuator filter
high-pressure filter
charge pressure filter
return filter
Which of the following filtration devices is designed to remove the smallest particles from a hydraulic reservoir?
return filter
kidney loop filter
suction screen
pressure filter
High-pressure filters can operate at pressures as high as ______.
3000 psi
4000 psi
5000 psi
6000 psi
What is a reasonable example of a maximum pressure for a return filter?
15 psi
150 psi
1500 psi
3000 psi
Which of the following filtration devices is designed to operate at high system pressures?
actuator filter
kidney loop filter
return filter
suction filter
Which of the following values is a reasonable example of a suction filter bypass valve rating?
2 to 3 psi
15 to 30 psi
30 to 60 psi
60 to 90 psi
When should filters be replaced?
every 500 hours
every 1000 hours
every 1500 hours
just before the filter starts to bypass
A filter indicator will display what color when the filter is bypassing oil?
green
yellow
red
purple
Which color is NOT commonly used on filter bypass indicators
green
yellow
red
purple
Which of the following will filter all of a system's oil flow?
bypass filter
proportional filter
full flow filter
all of the above
