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Millwright level 4 > Lubrication > Flashcards

Lubrication Flashcards

1
Q

What type of oil or grease would be used in a heavy load situation?

A

Extreme pressure lubricant

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2
Q

The most common measurement of kinematic viscosity is what?

A

Centistokes

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3
Q

When grease moves in a bearing, it tends to shear. This is known as:

A

Directional fluidity

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4
Q

What type of lubricant is used under shock load conditions?

A

EP lubricant

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5
Q

Viscosity is defined as which of the following?

A

Measurement of a fluid’s resistance to flow

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6
Q

A grease lubricant soluble in water is which of the following?

A

Sodium

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7
Q

How many cubic inches are in 1 US gallon?

A

231

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8
Q

What does 1 cubic foot of oil weigh?

A

Between 55 and 58 lbs

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9
Q

What happens to a fluid when it vaporizes?

A

It implodes

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10
Q

What is detergent in oil used for?

A

It keeps the internal parts of a system clean

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11
Q

What is aeration in reference to oils?

A

When oil is air entrained

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12
Q

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

A

0.4 psi

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13
Q

What is laminar flow?

A

Oil flowing in a smooth flow pattern

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14
Q

What is Bernoulli’s principal?

A

If flow is constant, the sum of kinetic and potential energy is constant

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15
Q

What are the three types of friction?

A

Fluid, rolling, sliding

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16
Q

What is mist lubrication used for?

A

High speed bearings and high velocity roller chain

17
Q

What is pour point?

A

The lowest temperature at which oil will flow

18
Q

How are gearboxes lubricated?

A

Splash method

19
Q

When pressure is applied to fluid at rest, force is transmitted equally in all directions at right angles to the containing surface. This is known as?

A

Pascal’s law

20
Q

What is the best lubrication condition?

A

Full film

21
Q

What type of gear oil is used for high heat and heavy loads?

A

EP

22
Q

What type of lubricant to use if gears in a gearbox are wearing?

A

EP oil

23
Q

What type of testing is performed on oil to check for metallic contaminants?

A

Millwright level 4 (6 decks)

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