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Technical Service Specialist > General 2 > Flashcards

General 2 Flashcards

1
Q

Which is more power, 1 kW or 1 HP?

A

1 kW

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2
Q

What does CDMA stand for in relation to radio systems?

A

Code Division Multiple Access

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3
Q

How much is 150F in Celsius?

A

65.6C

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4
Q

how do you say “petit gateau” Portuguese?

A

Petit Gateau

Peh-cheat Gah-toe

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5
Q

Define quotient

A

The result of one number divided by another

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6
Q

How do you say “in China” in Portuguese?

A

Na China

Na shee-na

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7
Q

What is the density of water at 20C in metric units?

A

998 kg/m^3

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8
Q

Without a VFD, a reduced voltage would cause a reduced speed, but what else would be reduced?

A

The torque

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9
Q

How do you say “you can’t” in Spanish?

A

no puede

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10
Q

How do you say “clothes” in Portuguese?

A

roupas

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11
Q

What is another name that refers to the phrase “pressure drop”?

A

Delta P

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12
Q

Concerning NLGI grease grades, what is the number range?

A

000-6

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13
Q

At which point of the dynamic mesh cycle of two gear teeth is the load transferred?

A

At the pitch-line of the gear teeth

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14
Q

How do you say “if” in Spanish?

A

si

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15
Q

What is the number of Pi from the 40th to 50th decimal place?

A

6939937510

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16
Q

What ratio is the Poise equivalent to?

A

dyne-second per square cm

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17
Q

How do you say “not today” in Spanish?

A

hoy no

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18
Q

Under the ISO classification system, what are the first and the last viscosity bracket classifications?

A

2 and 1500

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19
Q

What is the recommended kinematic viscosity for the gear oil on the GMb 16.f13m @100 degrees Celsius?

A

> 13 cSt

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20
Q

According to Rexroth Bosch Group, what temperature, in Fahrenheit , is considered a high mineral oil based hydraulic fluid temperature that after which adversely affects the fluid service life ?

A

Above 176 F

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21
Q

A standard SBC digging wheel bucket is 30” wide, what is this in mm?

A

760 (762)

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22
Q

What is the verb for “to put” in Portuguese?

A

Colocar

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23
Q

What’s one way that water can enter a hydraulic system that’s related to temperature?

A

Condensation

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24
Q

What is another name for hydrodynamic lubrication?

A

Full film

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25
Q

How many drops of a liquid is in 1 cubic inch?

A

330

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26
Q

What is the high gear ratio for a shoulder ballast cleaner?

A

5.94:1

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27
Q

What are the three main types of oil lubrication methods used for lubricating gear sets in a gear housing?

A

Splash lubrication, splash and circulation lubrication, pressure circulation lubrication

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28
Q

According to ISO 6743-4, what is the composition and properties for the HM classification?

A

Refined mineral oil with improved anti-rust, anti-oxidation, and anti-wear properties.

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29
Q

What micron range is medium test dust (MTD)?

A

SAE 5 - 80

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30
Q

Why does electricity flow from the negative terminal of a battery, through the electrical circuit, to the positive terminal?

A

Electrons are attracted to protons (electrostatic force)

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31
Q

Under the ISO viscosity classification system how many brackets are there?

A

18

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32
Q

reason

Port

A

razao

hah zow

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33
Q

According to ISO 6743-4, what is the composition and properties for the HV classification?

A

Refined mineral oil with improved anti-rust, anti-oxidation, anti-wear, and viscosity/temperature properties.

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34
Q

What is another name for a witness mark?

A

a impression mark

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35
Q

Concerning ASTM D943 TOST, what does TOST stand for?

A

Turbine Oil Stability Test

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36
Q

How do you pronounce “tangential”?

A

tan-jen-shuhl

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37
Q

What are the rubbing strips made from on the Wagonvac 1 and 2?

A

Polyethylene (PE)

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38
Q

According to ISO 6743-4, what is the composition and properties for classification HH?

A

Non-inhibited refined mineral oil

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39
Q

What do you have to remember about EP additives (as in how they work)?

A

The chemical reaction does not occur until there is a high load and elevated temperatures

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40
Q

Concerning lubricating grease, what is the definition of consistency?

A

Resistance to deformation with the application of force

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41
Q

What are the two most common ways to remove damaging solid particle contaminants from hydraulic fluid?

A

Use of hydraulic filters and magnetic devices

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42
Q

Define distillation?

A

Isolating products based on boiling point

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43
Q

How is the relative density of a fluid obtained?

A

Fluid density divided by 1000 kg/m^3

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44
Q

On the Sauer Danfoss Series 90 axial piston closed circuit pump, what four valves comprise the multi-function valve?

A

Bypass valve
Pressure limiter valve
High pressure relief valve
System check vale

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45
Q

What is the constant that is used in the horsepower formula using speed and torque when torque is in lb-in?

A

63025

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46
Q

What type of lubrication regime do piston pumps operate under?

A

Hydrodynamic (full film)

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47
Q

What are the short and long hose sizes, in feet, on the WagonVac 1 and 2 machines?

A

27 and 48 feet

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48
Q

What is the golden rule for getting people to like you?

A

Make them feel good about themselves

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49
Q

What is the constant that is used in the horsepower formula using speed and torque when torque is in lb-ft?

A

5252

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50
Q

What are the four friend signals?

A

Eye brow flick
Head tilt
Smile
Eye contact

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51
Q

What is the definition of the Lambda ratio?

A

Oil film thickness to contact surface roughness

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52
Q

How do you say “I am Nathan” in Spanish?

A

Yo soy Nathan

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53
Q

Of the two types of hydraulic fluid filter media, surface and depth, which one can be cleaned and reused and what is the most common method of cleaning?

A

Surface media can be cleaned and reused. An ultrasonic cleaner is usually the best method.

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54
Q

What is another name for an infrared spot thermometer?

A

Infrared spot radiometer

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55
Q

According to Chevron, which types of hydraulic pumps have the most severe metal to metal contact?

A

vane and gear pumps

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56
Q

What is the atmospheric pressure in bar at sea level?

A

1.01325

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57
Q

What four letters signify the chemical properties of the trade name “Teflon”?

A

PTFE

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58
Q

Where does the rolling contact occur in two meshing gear teeth?

A

At the pitch-line of the gear teeth

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59
Q

What is the scale for an ultra centrifuge reading?

A

1 - 8

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60
Q

What are the 5 most common ways for solid particle contaminants to enter a gearbox?

A 
Seals
Breathers
Top-ups
Drain and refill
Servicing
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61
Q

Between a base number and acid number, which is used for engine oil analysis?

A

Base number

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62
Q

How do you say in Portuguese that a show on tv is next?

A

A seguir

Ah see-gear

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63
Q

What are the four main types of additives that are added to lubricants?

A

antioxidants
corrosion inhibitors
anti-wear
extreme pressure (EP)

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64
Q

What is the most important additive in turbine, hydraulic, and compressor fluids?

A

Antioxidants (oxidation inhibitors)

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65
Q

According to Parker, particulate contamination is generally classified in what two ways (description of size)?

A

Silt or chip

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66
Q

On Loram’s duplex brake pressure gauges, what does the red needle indicate?

A

brake cylinder pressure

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67
Q

What are the two ways that noise is created in hydraulic systems?

A

Fluid borne noise and structure borne noise

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68
Q

How do you say “say again” in Portuguese ?

A

fala novamente

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69
Q

How do you say “I just returned” in Portuguese?

A

Eu acabo de voltar

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70
Q

What year was the wheel invented?

A

3500 BC

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71
Q

In gear oil EP additives, phosphorus and sulfur replaced what original EP additive?

A

Lead

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72
Q

What type of lubrication regime do hydraulic vane pumps operate under?

A

Boundary lubrication

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73
Q

When does your current passport expire?

A

12 Feb 2022

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74
Q

What is density expressed as a ratio?

A

The ratio of a substance’s mass to its volume

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75
Q

On the pH scale, what numbers are acidic?

A

Below 7.0 pH

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76
Q

What are the three types of hydraulic accumulators?

A

Bladder, piston, and diaphragm

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77
Q

What material is the grey wear strips made from on the WagonVac manipulator arm and what is the trade name?

A

Nylon composite

Nylatron

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78
Q

How many kilograms is 2,000 pounds?

A

907.1847399

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79
Q

What is the VI and pour point for Shell Tellus S3 M 68 viscosity hydraulic fluid?

A

VI 105

Pour point -33 C

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80
Q

Opinion in Portuguese

A

Opinião

Oh-piny-yow

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81
Q

What is the track gauge in meters on WV1 and WV2?

A

2.6416 meters

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82
Q

How do you say “last month” in Portuguese

A

no mês passado

No maze paw-saw-doo

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83
Q

What percentage of grease in the United States contains a thickener based on lithium complex?

A

70%

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84
Q

What is the maximum loaded weight of a RAILVAC?

A

88 tons

80 tonnes

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85
Q

What is another name for a herringbone gear?

A

A double helical gear

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86
Q

What part of a rolling element bearing is referred to as the shoulder?

A

Cover or seal

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87
Q

Concerning the ISO cleanliness code, what would particle count range would range number 10 be?

A

5 - 10

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88
Q

What is the particle range for ISO 4406 range number 21?

A

10,000 to 20,000

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89
Q

What tool can be used in the field to check the viscosity of a lubricant?

A

Viscometer

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90
Q

How many kPa’s is 1 PSI?

A

6.9

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91
Q

What is the Pascal-second expressed as a ratio?

A

Newton-second per square mm

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92
Q

The sine of an angle is represented by what letter ratio?

A

O/H

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93
Q

On Loram machines, what is the first thing that you should check if an emergency air application occurs when you release the brakes?

A

Check to see a machine lockout is enabled

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94
Q

What two types of additives did Sauer Danfoss say that a premium petroleum-based hydraulic fluid should have for use with its Series 90 hydraulic pump?

A

Oxidation and foam inhibitors

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95
Q

What is standard track gauge in inches?

A

56.5 inches

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96
Q

What is 30 bar in psi?

A

435

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97
Q

What are the five characteristics of grease lubrication that define state-of-the-art grease lubrication knowledge?

A 
Grease flow
Film formation
Film reduction
Dynamic behavior
Grease life
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98
Q

What is another name for the saturation pressure of a liquid at a given temperatures?

A

The boiling pressure

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99
Q

According to ISO 6743, what is the composition and properties for classification HL?

A

Refined mineral oil with improved anti-rust and anti-oxidation properties.

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100
Q

What is the definition of dynamic viscosity using the units of the CGS system? (technical description)

A

The viscosity of a fluid in which a tangential force of 1 dyne per cm^2 maintains a difference in velocity of 1 cm per second between two parallel fluid planes located 1 cm apart.

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101
Q

What is the specific gravity reading for a fully discharged 12V battery?

A

1.120

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102
Q

According to Parker, most damage causing particles in hydraulic fluid are smaller than what micron size?

A

14 microns

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103
Q

What is the numerical value of the cosine of 90 degree incline?

A

0

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104
Q

When visiting a machine to solve a technical problem what two things are important to do before leaving?

A

Ask if assistance is needed for other technical problems

Ask if there are any questions related to machine maintenance or operation

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105
Q

What is the kinematic viscosity of Mobil SHC 627 @ 100 Celsius?

A

14.1 cSt

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106
Q

Prior to 1999, the ISO Solid Contamination Level Code used two digits that referred to what two micron sizes?

A

5 and 15

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107
Q

What are the first ten decimal places of pi?

A

1415926535

108
Q

What is the cosine of a 30 degree angle?

A

.866

109
Q

What are the three primary colors?

A

Red, blue, and yellow

110
Q

According to CAT, what is the maximum temperature, in Fahrenheit, for the suffix of 10W-40 and 15W-40?

A

122F

111
Q

What is the SI unit of dynamic viscosity?

A

Pascal-second (Pa-s)

112
Q

What manufacturer and model number are the drive gearboxes on new style SBC’s?

A

Durst 788-7937

113
Q

What is the reason that water and petroleum based oil don’t mix?

A

Polar / non-polar difference

114
Q

Concerning solenoids, what is the most common cause of failure?

A

The plunger does not close and the high inrush current continues causing the coil to overheat and burn out?

115
Q

What is the technical description of how fluid enters the inlet port of a hydraulic pump?

A

The pump creates a vacuum at its inlet port allowing the force of atmospheric pressure on the surface of the fluid in the hydraulic tank to push the fluid into the pump inlet

116
Q

According to ISO 6743-4, what is the minimum VI for hydraulic fluids classified as HV?

A

140

117
Q

Concerning hydraulic fluid and solid particle damage, what is the term used to describe a critical size of the particles to avoid?

A

Dynamic clearance sized particles ?

118
Q

Concerning lubrication, define wear?

A

The gradual removal of material from surfaces

119
Q

What typical applications are ISO-L-HM oils used for?

A

General hydraulic systems which include highly loaded components.

120
Q

What is the name of the type of synthetics that are known as the traditional synthetics?

A

PAOs (polyalphaolefins)

121
Q

How many filters on contained in each safety filter bank on the WagonVacs?

A

6

122
Q

What is the centistoke range for the SAE gear oil suffix of 85?

A

11-13.5 centistokes

123
Q

What is the relationship between temperature and viscosity for oils?

A

Inverse relationship

124
Q

On the Sauer Danfoss Series 90 axial piston closed circuit pump, how many functions do the multi-function valves?

A

Four

125
Q

Concerning FRA databases, what does REA stand for?

A

Rail
Equipment
Accident

126
Q

What is a disadvantage of ball bearings in relation to load carrying capacity? ( other than dynamic load capacity)

A

Poor Static load capacity

127
Q

How many kilograms is 1 US ton?

A

907.1847399

128
Q

What are the numbers of pi from the 31st to the 40th decimal place?

A

5028841971

129
Q

What is the viscosity range, of the base oil @40 Celsius, for the most common multi-purpose greases?

A

150 to 220 cSt @40 Celsius

130
Q

What date was your current passport issued?

A

13 FEB 2012

131
Q

How many microns is silt?

A

8 microns

132
Q

What is the recommended kinematic viscosity range for a Danfoss Series 90 Axial Piston hydraulic pump?

A

12-80 cSt

133
Q

When checking an electrical circuit for a zero-voltage condition with a multi-meter, what must be done first?

A

Check the circuit with voltage to verify that the multi-meter is working correctly ?

134
Q

When traveling down the tracks and an E-stop occurs, what is the first thing that you should do after coming to a stop?

A

Apply the brake

135
Q

What is the kinematic viscosity of Shell Tellus S2 V 68 at 100 C ?

A

10.5 centistokes

136
Q

According to ASTM D6210, what is the technical term for liner pitting?

A

Cavitation corrosion

137
Q

Why do ball bearings have relatively lower load carrying capacity compared to other types of rolling element bearings?

A

Point contact in the contact zone

138
Q

What is a saying from “An Essay on Criticism” that talks about fools?

A

fools rush in where angels fear to tread

139
Q

What MKS units is the Pascal-second equivalent to?

A

N-s/m^2

140
Q

How much is 1 nautical mile in feet?

A

6,076.10 feet

141
Q

How can you project confidence to your clients?

A

Stand up straight, with your shoulders back, and your head high

142
Q

What is a gearbox called in an automobile?

A

A differential

143
Q

How many pounds in 2,000 tons?

A

4,000,000

144
Q

Who invented the Pareto Principal?

A

Vilfredo Pareto (Italy)

145
Q

What is your definition of a lubricant additive?

A

A chemical that imparts or improves a specific property of the base oil?

146
Q

How do you say “a pleasure” in Spanish?

A

mucho gusto

147
Q

1 hp is how many lb-ft/sec?

A

550 lb-ft/sec

148
Q

What is the CGS unit name of kinematic viscosity?

A

Stokes (St)

149
Q

In reference to a metric ton, how is a UK ton described?

A

A long ton

150
Q

1 hp is how many Watts?

A

746

151
Q

According to Mobil, what is the temperature range for typical industrial hydraulic systems?

A

110-150 F

152
Q

On a new style SBC, on the screen car, what three functions have a flow control valve associated with them?

A

Separator motor
Swing conveyor lift
Tie plow hold down

153
Q

According to the CQT, what are the four levels of defect seriousness?

A

Critical
Serious
Major
Minor

154
Q

What is the Loram part number for the Vacuum safety and cooling air filters?

A

117030

155
Q

Concerning ASTM D943, what does TOST stand for?

A

Turbine Oil Oxygen Stability Test

156
Q

What are the two most common points of solid particle ingression in gear boxes?

A

Seals and breathers

157
Q

What are the three effects of oil oxidation (oxygen reacting with oil)?

A

formation of polar by-products that cause fluid thickening

formation of acidic by-products

deposit formation

158
Q

What typical applications are ISO-L-HV oils used for?

A

Construction and marine equipment

159
Q

How much vacuum does the RAILVAC develop in bar?

A

0.8 bar

160
Q

Concerning pneumatic circuits, what does FRL stand for?

A

Filter Regular Lubricator

161
Q

What are the three most common hydraulic pump designs used in hydraulic systems?

A

Piston, vane, and gear

162
Q

How do you say “technical specialist” in Portuguese?

A

Especialista tecnico

163
Q

How do you say “not now” in Portuguese?

A

Agora não

164
Q

I am coming - Portuguese ?

A

Eu estou indo

165
Q

What is another name for a 55 gallon drum?

A

A refinery drum

166
Q

How do you say “I speak a little Spanish” in Spanish?

A

hablo un pouco de espanhol

167
Q

1 PSI equals how many kPa’s?

A

6.9

168
Q

Which countries ton is referred to as a long ton?

A

The U.K.

169
Q

What is the most common type of rolling element bearing?

A

Ball bearing

170
Q

What is the centistoke range for the suffix of SAE J306 80 @100 Celsius?

A

7-11 centistokes

171
Q

What is 90 PSI in kPa?

A

620 kPa

172
Q

Who is the director of project management for Loram?

A

Keith Johnson

173
Q

Concerning ISO 4406:1999, what is the title?

A

Method for coding the level of contamination by solid particles

174
Q

How do you pronounce the word “radiometry”?

A

Radiometry (ray-d-ohm-mitry)

175
Q

Other then infrared spot thermometers, what are the two main types of infrared detection devices?

A

Imagers

Cameras

176
Q

According to “A Comprehensive Review of Lubricant Chemistry, Technology, Selection, and Design” phosphate ester-derived hydraulic fluids can remain in service for how long with proper maintenance?

A

15 years or more

177
Q

What type of lubrication regime do hydraulic gear pumps operate under?

A

Hydrodynamic (full film) or mixed film

178
Q

1 metric ton (tone) is how many kgs?

A

1,000

179
Q

How do you say “it’s nothing” in Portuguese?

A

nao e nada

180
Q

How many seconds are there in a 24 hour day?

A

86,400 seconds.

181
Q

How do you say “to wash” in Spanish?

A

lavar

182
Q

What three dynamic factors create elastohydrodynamic lubrication?

A

Hydrodynamic lubrication
Elastic deformation of metal surfaces
The effect of pressure on viscosity

183
Q

How do you say “I understand a little Spanish” in Spanish

A

entiendo un pouco de espanhol

184
Q

How long is a RAILVAC in feet? (Machine only)

A

105 feet

185
Q

What is the name of the company that does the translations for Loram’s manuals?

A

CSOFT

186
Q

What are the two categories commonly used to group additives?

A

Chemically active and chemically inert

187
Q

Using the International Phonetic Alphabet, what are A,B,C, and D?

A

Alpha, Bravo, Charlie, Delta

188
Q

1 hp is how many N-m/sec?

A

746 N-m/sec

189
Q

What does the letter “G” in Aerzen GMb 16.f13 signify?

A

Rotary piston blower based on the roots principal

190
Q

How many microns is the cross-section of human hair?

A

100 microns (0.0039 inches)

191
Q

What is the constant that is used in the horsepower formula using speed and torque when torque is in N-m?

A

7124

192
Q

What type of refrigerant is used in the Visionaire 7060 air conditioner?

A

R-134a

193
Q

What are the four coolant products in the Fleetguard family?

A

Fleetcool
Fleetcool EX
ES Compleat
ES Compleat OAT

194
Q

What is 1900 X 12.35 =

A

23,465

195
Q

According to the API, lubricant base stocks can be divided into how many base groups?

A

5

196
Q

What are the two types of neutralization numbers?

A

Acid number

Base number

197
Q

On Loram’s duplex air brake gauges, what does the white needle indicate?

A

Brake pipe pressure

198
Q

How do you say “I don’t understand” in Spanish?

A

no entiendo

no N-T-N-doh

199
Q

How many metric tons (tonnes) is 2,000 tons (US)?

A

1814 tonnes

200
Q

How do you say “to dry” in Spanish?

A

secar

201
Q

Concerning the type of pump called a gerotor, what words is its name derived from?

A

Generated rotor

202
Q

On the Sauer Danfoss Series 90 axial piston closed circuit pump, what is it’s rated speed in RPMs for frame size 100?

A

3300 RPMs

203
Q

According to Mobil, what temperature can typical mobile hydraulic systems operate up to?

A

Up to 250 F

204
Q

Concerning ASTM D974, what does TBN stand for?

A

Total Base Number

205
Q

Where is DISAB located?

A

Lund, Sweden

206
Q

What is another name for rolling element bearings?

A

Antifriction bearings

207
Q

How do you say “a job” in Portuguese?

as in working at a company

A

Um emprego

oon en-pray-goo

208
Q

What is the description of the NLGI scale that runs from 000 - 6?

A

Numerical consistency scale

209
Q

According to API, what is the VI range for group I base oils?

A

80-119

210
Q

What are the three types of wear that occur in any equipment with moving parts?

A

frictional
abrasive
corrosive

211
Q

What 5 standards could be referenced as authoritative figures?

A 
AGMA
ASME
ASTM
ISO
SAE
212
Q

How do you say “they” in Spanish? (masc.)

A

ellos

213
Q

What is the simple rule for solubility?

A

Like dissolves like

214
Q

How many microns is a red blood cell?

A

7 microns

215
Q

According to predictive maintenance principals, what three conditions does oil analysis define?

A

Condition of lubricant
Condition of system
Condition of component

216
Q

What is 90 PSI in KPa?

A

620 KPa

217
Q

What is the CGS unit of kinematic viscosity?

A

cm^2 per second

218
Q

What two general adverse effects do solid particle contaminants have on hydraulic systems?

A

They cause abrasive wear and plug small orifices

219
Q

What is the Imperial unit of mass?

A

The slug

220
Q

In reference to a metric ton, how is a US ton described?

A

A short ton

221
Q

What is the actual name for the ISO cleanliness code?

A

ISO 4406:1999, Method for Coding the Level of Contamination by Solid Particles

222
Q

Concerning hydraulic control valves, what does LVDT stand for?

A

Linear Variable Differential Transformer

223
Q

How do you say “how did it go?” in Portuguese?

A

Como foi

224
Q

What is the relative density of water at 20C in metric units?

A

.998

225
Q

What type of lubrication regime do hydraulic piston pumps operate under?

A

Hydrodynamic (full fluid film)

226
Q

On new style SBC’s, what is the the GPM rating for the broom motor and broom lift, respectively, and in relation to the individual DCVs?

A

Motor- 11

Lift- 4

227
Q

What is Loram’s part number for the 75 hertz pulsars?

A

158347

228
Q

What are the three different phases of water contamination in hydraulic oil?

A

Dissolved water, emulsified water, and free water

229
Q

Concerning lubricating oil, what does PAO stand for?

A

Polyalphaolefins

Poly alpha olefins

230
Q

How is the condition of a hydraulic accumulator primarily determined?

A

Through periodic checking of the pre-charge pressure

231
Q

Concerning Shell’s Tellus family of hydraulic fluids, which product is tier 2 premium?

A

Shell Tellus S3 M

232
Q

How do you say “see you soon” in Spanish?

A

Hasta pronto

233
Q

What does the “R” stand for in Loram’s ICARE?

A

Results orientated

234
Q

According to the CQT handbook, what are the two types of tolerances?

A

Unilateral and bilateral

235
Q

According to “A Comprehensive Review of Lubricant Chemistry, Technology, Selection, and Design” what are the three minimum fluid monitoring parameters required in oil analysis for anti-wear petroleum based hydraulic fluid?

A

Viscosity, Neutralization number, and moisture

236
Q

Where are the corporate headquarters of Parker Hannifin?

A

Cleveland, OH

237
Q

What could happen if you exceeded the case pressure limits of a hydraulic pump or motor (other than cracking the physical housing)?

A

Shaft seal damage and/or leak

238
Q

Concerning EDC controls on a Series 90 Axial Piston Pump, what does MOR stand for?

A

Manual Over Ride

239
Q

Valvoline is a subsidiary of what company?

A

Ashland

240
Q

How many particles are in a 1 mL fluid sample with a ISO 4406 code of 22?

A

20,000- 40,000

241
Q

How many tons (US) is 4,000,000 pounds?

A

2,000 tons

242
Q

According to Dow (chemical company), what is the key benefit of PAG’s over petroleum based and PAO’s lubricants?

A

Oxidation by-products (varnish and sludge) are soluble in the base oil

243
Q

What 4 hydraulic manufacturers could be listed as references of authoritative figures?

A

Bosch Rexroth
Danfoss
Eaton
Parker

244
Q

Define cavitation?

A

Rapid vaporization and recondensation of a fluid as it briefly passes through an area of low absolute pressure

245
Q

What is 72.5 PSI in kPa?

A

500

246
Q

According to ISO 6743-4 what is the composition and properties for the HR classification?

A

Refined mineral oil with improved anti-rust, anti-oxidation, and viscosity/temperature properties.

247
Q

What are the three parts of an additive?

A

The polar head
Oil soluble tail
The hook the connects them

248
Q

Concerning standards, what does NIST stand for?

A

National Institute of Standards and Technology

249
Q

What is the most common material that sheaves and sprockets are made from?

A

Grey iron

250
Q

In oil analysis, what does the RULER number represent?

A

It represents the concentration of antioxidants relative to the respective new oil

251
Q

How do you say the “manufacturer” in Portuguese?

A

Fabricante

Fahb-ree-con-chee

252
Q

What units are equivalent to the Poise?

A

dyne-second/cm^2

253
Q

According to the ISO, what is always present in hydraulic fluid?

A

Solid particle contamination

254
Q

What are the two terms used to describe checking a circuit that has been de-energized and locked and tagged out?

A

No-voltage condition
or
Zero-voltage condition

255
Q

How many kilograms is a UK long ton?

A

1,016.046909

256
Q

Concerning contamination standards for lubricants, what does NAS stand for?

A

National Aerospace Standard

257
Q

What metric size is equivalent to 3/4”?

A

19mm

258
Q

what is the distance between New York and Los Angeles?

A

2,789.4 miles

259
Q

What is the definition of density?

A

Density equals mass per unit volume

Density = mass/ volume

260
Q

In addition to indicating the need for an oil change, what else can an oil analysis indicate? (in addition to an oil change)

A

The additional need to flush the system

261
Q

What is Polyethylene and how is it made?

A

A thermoplastic resin made from polymerizing the gas ethylene

262
Q

2.9 gallons equals how many liters?

A

10.98 liters

263
Q

Concerning engine coolants, how do you say nitrites?

A

Nyt-tryts ou

ny-tryts

264
Q

What is the eleventh letter of the Greek alphabet?

A

Lambda

265
Q

What are the first five letters of the Greek alphabet?

A 
Alpha
Beta
Gamma
Delta
Epsilon
266
Q

Concerning lubrication, what is another name for lambda ratio?

A

Specific film thickness

Technical Service Specialist (9 decks)

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