oiler test Flashcards
the most important single property of a lubricating oil is its
viscosity
the measure that is commonly used to represent a rate of oil feed is drops per ____
minute
the physical appearance of a grease with consistency numbers 0, 4, & 6
0- fluid
4- hard
6- solid
the property of a lubricant that allows it to adhere to metallic surfaces is known as
oiliness
the neutralization number of an oil is an indication of its
organic or mineral acidity
the basic ingredient in the manufacture of lubricating greases is
soap
a test of grease that identifies greases and indicates uniformity in their manufacture is known as the ____ test
dropping-point
the bearing materials usually called white metals or babbit metal consists mainly of
tin and copper
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
120
the objective in the use of applicators for wire-rope lubrication is to apply a smooth even film at a temperature conductive to the
penetration of the wire strands
a non-ferrous metal is
copper
the common terms heavy and light, applied to an oil, refer only to the oil’s
viscosity
the ring in ring-oiled bearings has a diameter that is usually ____ the journal diameter
twice
a boiler feedwater regulator automatically controls the ____ the boiler
water supply to
the dirty oil to be purified in an operating DeLaval Purifier enters the purifier bowl from the
top of the machine
the approximate rpm of a Sharpies oil purifier is
16,000
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
160° F
an engine indicator is an instrument used on a reciprocating engine to determine the ____ the engine
performance of
the maximum bearing oil discharge temperature at which a turbine beating may satisfactory operate is
200° F
generally, at what point should a turbine-driven generator, with an integral lubricating oil system, put the lube oil cooler in operation?
when the temperature of the hottest bearing reaches 100° F
In modern practices, the method by which turbine-generator reduction gear surfaces normally receive lubrication oil is
pressure circulation lubrication
lubrication for modern reciprocating air compressors is generally supplied bt
oil rings
aftercoolers are put on most air compressors installations to
condense moisture from compressed air
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)
street elbow
