Practice Test Questions

Question 1

What is aeration in reference to oils

Answer 1

When oil is air entrained

Question 2

How much pressure does the weight if 1 cubic foot of oil generate?

Answer 2

14psi

Question 3

What is mist lubrication used for

Answer 3

High speed bearings and high velocity roller chain

Question 4

Shaft is pour point?

Answer 4

The lowest temperature as which oil flow

Question 5

What type of test is performed on oil to check for metallic contamination

Answer 5

Spectrograph

Question 6

What is aeration in reference to oils

Answer 6

When oil is air entrained

Question 7

How much pressure does the weight or 1 cubic foot of oil generate

Answer 7

14 psi

Question 8

How much volume is delivered if the swash plate in an axial piston pump is positioned are 90 degree s

Answer 8

None

Question 9

What is the first consideration when designing a fluid power system

Answer 9

The load requirements

Question 10

What is the included angle on a JIC fitting

Answer 10

74 degrees

Question 11

What is the purpose of the screw located in the end or a hydraulic cylinder block

Answer 11

Adjusting the cushion

Question 12

What is use to control the output or a variable displacement pump?

Answer 12

Compensator

Question 13

What is the quick disconnect in a hydraulic system called

Answer 13

Coupling

Question 14

Where is the maximum pressure relief valve located in an hydraulic system

Answer 14

In the line close to the pump

Question 15

What type of pump is required to handle high viscosity

Answer 15

Any positive displacement pump

Question 16

How is a georotor pump recognized

Answer 16

Internal georator has one less tooth thank the outer georator

Question 17

In a fluid system, what is used to maintain constant pressure?

Answer 17

Regulator

Question 18

If an on-positive centrifugal pump deliver a lower than required, what is the most likely cause?

Answer 18

Inlet restriction

Question 19

A pressure gauge reads 0 in a hydraulic system, what is the reason

Answer 19

Broken relief valve

Question 20

How are filters sized

Answer 20

Microns

Question 21

What type of hydraulic valve is normally open

Answer 21

Pressure reducing valve

Question 22

Fluid power actuators convert fluid into which of the following?

Answer 22

Motion

Question 23

Solid filled equilateral triangle a on a schematic indicates

Answer 23

Flow

Question 24

An external gear pump resembles what shape

Answer 24

Figure 8 shape

Question 25

The internal gear on an internal gear pump is

Answer 25

A slinger

Question 26

Pumping chambers in a georotor pump are created by

Answer 26

Odd numbers of forms between both elements

Question 27

If a swash plate in an axial piston pump is not adjustable, the pump is

Answer 27

Fixed displacement

Question 28

The term “meter out” means that the Flow control valve is located where?

Answer 28

Immediately after the actuator

Question 29

If a pilot orifice is plugged, what will happen?

Answer 29

Valve will not open

Question 30

What causes vibration to occur on the inlet line of a pump

Answer 30

Cavitation

Question 31

How do you choose hydraulic tubing

Answer 31

Material , OD will thickness

Question 32

What type of pump is used to handle high viscosity fluids

Answer 32

A lobe style pump

Question 33

What type of hydraulic pump had a swash plate

Answer 33

An external gear pump resemble

Question 34

For fluid to properly function over long periods of time, it must be

Answer 34

Have the filters changed weekly

Question 35

Pascal a law states that when pressure is applied to a fluid at rest in a confined space, force is transmitted

Answer 35

Equally in all directions, at right angles to the containing surface

Question 36

In a fluid power directional control valve symbol, the squares are called

Answer 36

Envelopes

Question 37

The gears if an internal gear pump rotates

Answer 37

In the opposite direction

Question 38

The difference between a balance and an unbalanced vane pump is

Answer 38

The style of housing

Question 39

The most efficient way to maintain contact if vanes to the cam ring surface is by

Answer 39

Centrifugal force

Question 40

What causes aeration

Answer 40

Leaking Inlet

Question 41

Erratic and excessive noise in a lobe pump is caused by

Answer 41

Accumulator

Question 42

What type of dvc center holds the load and dumps fluid back to thank

Answer 42

Tandem center

Question 43

On a pneumatic conveyor, what area would wear out first

Answer 43

Outside curves

Question 44

If a vaccum cylinder had a leaking rod cylinder, the following occurs

Answer 44

Reduced reaction force

Question 45

An equilateral triangle in a pneumatic drawing represents what

Answer 45

Direction of flow