ALL OF THE AMTEC TEST (COMPILED)
QUESTIONS WITH COMPLETED CORRECT
ANSWERS GRADED A+
A key factor in the performance of an O-ring is _______________________.
Select one:
its shape
its ability to repeatedly stretch to twice its normal length and return to its
original size
its ability to absorb the lubricant
its ability to be compressed and maintain that shape Answer - its ability to
repeatedly stretch to twice its normal length and return to its original size
After a plain bearing has been pressed into the housing using an arbor press,
you should _______________________.
Select one:
ensure that the mating surfaces are clean
check the inside diameter to see if it has been reduced or distorted due to the
press fit
,re-bore the bushing for extra clearance
heat the plain bearing to seat it into the housing Answer - check the inside
diameter to see if it has been reduced or distorted due to the press fit
Anti-friction bearings differ from plain bearings in that
_______________________.
Select one:
they incorporate rolling elements held between two raceways
anti-friction bearings require oil as a lubricant
plain bearings can operate at very low speeds with little or no lubricant
anti-friction bearings only carry radial loads Answer - they incorporate rolling
elements held between two raceways
Bearing fatigue, which is identified by cracks and flaking of the race surfaces, is
also known as _______________________.
Select one:
fretting
brinelling
,fluting
spalling Answer - spalling
During shift changes, incoming employees _______________________.
Select one:
must verify for themselves that the machinery has been locked out and de-
energized
may start working on the effected equipment
must notify the safety department that they are working on the equipment
must unplug the machine and do a "power-up" test Answer - must verify for
themselves that the machinery has been locked out and de-energized
Line shafts connecting a prime mover that transmits power to a number of
machines is also known as _______________________.
Select one:
an axle
power transmission shafts
a stub shaft
, a spindle Answer - power transmission shafts
Mechanical seals have been designed to _______________________.
Select one:
prevent leakage of fluids between a static shaft and its bearing
prevent leakage of fluids between a housing and its bearing
prevent leakage of fluids between rotating shafts and their housings
prevent leakage of fluids between a static shaft and a static housing Answer -
prevent leakage of fluids between rotating shafts and their housings
Prior to bearing installations _______________________.
Select one:
you can select any bearing that has the same basic overall dimensions
you need to check that the bearing is the correct type and size as per the
manufacturer's specifications
you need to select a bearing that has the exact part number and manufacturer
you can replace a roller bearing with the same size ball bearing Answer - you
need to check that the bearing is the correct type and size as per the
manufacturer's specifications
QUESTIONS WITH COMPLETED CORRECT
ANSWERS GRADED A+
A key factor in the performance of an O-ring is _______________________.
Select one:
its shape
its ability to repeatedly stretch to twice its normal length and return to its
original size
its ability to absorb the lubricant
its ability to be compressed and maintain that shape Answer - its ability to
repeatedly stretch to twice its normal length and return to its original size
After a plain bearing has been pressed into the housing using an arbor press,
you should _______________________.
Select one:
ensure that the mating surfaces are clean
check the inside diameter to see if it has been reduced or distorted due to the
press fit
,re-bore the bushing for extra clearance
heat the plain bearing to seat it into the housing Answer - check the inside
diameter to see if it has been reduced or distorted due to the press fit
Anti-friction bearings differ from plain bearings in that
_______________________.
Select one:
they incorporate rolling elements held between two raceways
anti-friction bearings require oil as a lubricant
plain bearings can operate at very low speeds with little or no lubricant
anti-friction bearings only carry radial loads Answer - they incorporate rolling
elements held between two raceways
Bearing fatigue, which is identified by cracks and flaking of the race surfaces, is
also known as _______________________.
Select one:
fretting
brinelling
,fluting
spalling Answer - spalling
During shift changes, incoming employees _______________________.
Select one:
must verify for themselves that the machinery has been locked out and de-
energized
may start working on the effected equipment
must notify the safety department that they are working on the equipment
must unplug the machine and do a "power-up" test Answer - must verify for
themselves that the machinery has been locked out and de-energized
Line shafts connecting a prime mover that transmits power to a number of
machines is also known as _______________________.
Select one:
an axle
power transmission shafts
a stub shaft
, a spindle Answer - power transmission shafts
Mechanical seals have been designed to _______________________.
Select one:
prevent leakage of fluids between a static shaft and its bearing
prevent leakage of fluids between a housing and its bearing
prevent leakage of fluids between rotating shafts and their housings
prevent leakage of fluids between a static shaft and a static housing Answer -
prevent leakage of fluids between rotating shafts and their housings
Prior to bearing installations _______________________.
Select one:
you can select any bearing that has the same basic overall dimensions
you need to check that the bearing is the correct type and size as per the
manufacturer's specifications
you need to select a bearing that has the exact part number and manufacturer
you can replace a roller bearing with the same size ball bearing Answer - you
need to check that the bearing is the correct type and size as per the
manufacturer's specifications
