oiler test

Question 1

the most important single property of a lubricating oil is its

Answer 1

viscosity

Question 2

the measure that is commonly used to represent a rate of oil feed is drops per ____

Answer 2

minute

Question 3

the physical appearance of a grease with consistency numbers 0, 4, & 6

Answer 3

0- fluid
4- hard
6- solid

Question 4

the property of a lubricant that allows it to adhere to metallic surfaces is known as

Answer 4

oiliness

Question 5

the neutralization number of an oil is an indication of its

Answer 5

organic or mineral acidity

Question 6

the basic ingredient in the manufacture of lubricating greases is

Answer 6

soap

Question 7

a test of grease that identifies greases and indicates uniformity in their manufacture is known as the ____ test

Answer 7

dropping-point

Question 8

the bearing materials usually called white metals or babbit metal consists mainly of

Answer 8

tin and copper

Question 9

it is good practice in the installation of three new packing rings in a stuffing box to require that the joints of the packing be spaced ____ degrees apart

Answer 9

120

Question 10

the objective in the use of applicators for wire-rope lubrication is to apply a smooth even film at a temperature conductive to the

Answer 10

penetration of the wire strands

Question 11

a non-ferrous metal is

Answer 11

copper

Question 12

the common terms heavy and light, applied to an oil, refer only to the oil’s

Answer 12

viscosity

Question 13

the ring in ring-oiled bearings has a diameter that is usually ____ the journal diameter

Answer 13

twice

Question 14

a boiler feedwater regulator automatically controls the ____ the boiler

Answer 14

water supply to

Question 15

the dirty oil to be purified in an operating DeLaval Purifier enters the purifier bowl from the

Answer 15

top of the machine

Question 16

the approximate rpm of a Sharpies oil purifier is

Answer 16

16,000

Question 17

in order to have effective separation or purification in a DeLaval Purifier, it is recommended that the oil to be cleaned be heated to an approximate temperature of

Answer 17

160° F

Question 18

an engine indicator is an instrument used on a reciprocating engine to determine the ____ the engine

Answer 18

performance of

Question 19

the maximum bearing oil discharge temperature at which a turbine beating may satisfactory operate is

Answer 19

200° F

Question 20

generally, at what point should a turbine-driven generator, with an integral lubricating oil system, put the lube oil cooler in operation?

Answer 20

when the temperature of the hottest bearing reaches 100° F

Question 21

In modern practices, the method by which turbine-generator reduction gear surfaces normally receive lubrication oil is

Answer 21

pressure circulation lubrication

Question 22

lubrication for modern reciprocating air compressors is generally supplied bt

Answer 22

oil rings

Question 23

aftercoolers are put on most air compressors installations to

Answer 23

condense moisture from compressed air

Question 24

a pipe fitting having a male thread at one end, a female thread at the other end, and shaped to a ninety-degree is called a(n)

Answer 24

street elbow

Question 25

one action that must be taken during normal operation to clean a knife edge (cuneo) strainer is

Answer 25

rotating the cleaner blades

Question 26

detergents are used in lubricating oils to

Answer 26

keep insoluble matter in suspension

Question 27

the purpose of adding an inhibitor to lubricating oil is to ____ the engine

Answer 27

prevent sludge and varnish formation on parts of

Question 28

the relationship between oil viscosities and temperature is that the viscosities

Answer 28

decrease with temperature increase

Question 29

fluid that should be used when cleaning filter bags of pressure-type lube oil filters

Answer 29

kerosene

Question 30

the precaution, or precautions, that an oiler must take when he is using absorbent type lubricating oil filters is to

Answer 30

make sure that the particular oil additives are not removed by the fillter

Question 31

the specific gravity of lubricating oil is usually measured by means of

Answer 31

hydrometer

Question 32

an important requirement of a refrigerator lubricant is that it has

Answer 32

freedom from water

Question 33

a fault that would generally cause a sudden increase in oil pressure in a lubricating line to a bearing is

Answer 33

a clogged strainer

Question 34

the wick used in a gravity oil-feed system is usually made of

Answer 34

wool

Question 35

a thrust bearing is least likely to be found on a

Answer 35

reciprocating pump