Eaton Ch6

Question 1

A strainer is called a______ filter
Fine
Coarse
Media
Absorbent

Answer 1

Coarse 

Question 2

A particle one micron in size equals_____ inch
.000583.
.7053.
.00275.
.000039.

Answer 2

.000039. 

Question 3

A filter designed to signal the operator when the element needs cleaning is called a(n) ______ filter
Circulating
Off-line
Absorbent
Indicating

Answer 3

Indicating 

Question 4

Three general areas for locating a filter are Inlet, pressure and______ lines

Pilot
Return
Flow
Relief

Answer 4

Return

Question 5

What type of filter element provides precise control of pore size?
Cylindrical
Sub plate
Surface
Pleated

Answer 5

Surface 

Question 6

Filtering materials are classified as absorbent or _____
Mesh
Adsorbent
Fiber
Depth type

Answer 6

Adsorbent

Question 7

What type of filter passes the entire flow entering it’s inlet through the element.

Proportional flow
Indicator type
Full flow
Reverse flow

Answer 7

Full flow

Question 8

The smallest particle an eye can see is approximately _______ microns
25
40
50
75

Answer 8

40

Question 9

Hydraulic circuit components fail as a result of contamination and ________
Design
Phase
Static
ISO

Answer 9

Design

Question 10

If the fluid within the hydraulic pump, clearances become heavily contaminated,______ Will probably occur

Cavitation
Fatigue
Aeration
Seizure

Answer 10

Seizure

Question 11

Which of the following is not a mechanism of wear

Adhesion
Filtration
Fatigue
Cavitation

Answer 11

Filtration 

Question 12

Contamination blockage, which prevents and then allows a solenoid spool to shift is called a _______failure
Degradation
Catastrophic
Transient
Critical 

Answer 12

Transient

Question 13

An increase in the pressure differential across a filter will cause a(n)______ in power consumption

Increase
Half wave
Decrease
Beta ration

Answer 13

Increase 

Question 14

When specifying the correct filter for a given application, which of the following would not be considered?
Weight of particles to be held
Flow rate capacity
Flow sampling method
Pressure drop through element

Answer 14

Flow sampling method

Question 15

Which is not a source of contamination in a hydraulic system?
Ingresses
Entrained
Internally
Built in

Answer 15

Entrained

Question 16

The preferred location for dynamic sampling is directly______ of the return line filter
Downstream
Midstream
Center
Upstream

Answer 16

Upstream


Question 17

After hydraulic system assembly, tubing must not be soldered, welded or_______
Flared
Threaded
Brazed
Plugged

Answer 17

Brazed

Question 18

When transferring, clean oil, the transfer pump should be equipped with a_____ filter
Beta
Coarse
5 Micron
Mesh

Answer 18

5 micron

Question 19

Filters that can trap much smaller particles than inlet line strainers are______ ______ Filters.
Pressure line
Return line
Off-line
Pilot line

Answer 19

Pressure line

Question 20

The higher the sieve or mesh number the ____ The screen.
Thicker
Finer
Thinner
Coarser

Answer 20

Finer

Question 21

To test for material compatibility, the filter element is immersed for______hours in system fluid
59
63
84
72

Answer 21

72

Question 22

In cylindrical shape to filter elements,_______ tubes are used to support the Media against pressure differential.
Stainless
Flared
Perforated
Bypass

Answer 22

Perforated 

Question 23

Hydraulic fiberglass filter elements tend to have a________ filtering structure

Stainless
Mesh
Surface
Pleated

Answer 23

Pleaded

Question 24

To eliminate the possibility of filter element collapse , a_______ valve is used
Bypass
Inlet
Rotary
Check

Answer 24

Bypass 

Question 25

To monitor initial and subsequent levels of contamination_______ points must be provided
Filter
Sampling
Static
Dynamic

Answer 25

Sampling