MMET 301 Final Question and answers
rated A+ 2025
Common units of torque are - correct answer lb-in
The definition of force is - correct answer a push or pull acting on an object
The equation for the circumference of a circle is: - correct answer 2*pi*r
friction always acts - correct answer in the direction opposite to that of motion
the definition of torque is - correct answer the tendency of a body to rotate
if we are given the torque and the rpm of a shaft, then we can calculate -
correct answer the horsepower output at that shaft
the definition of power is - correct answer the rate at which work is done
the standard unit of power in the imperial system is - correct answer HP
the principle of conservation of energy is - correct answer that energy can
neither be created nor destroyed
a 2 HP motor is attached to a gearbox by a coupling. the motor shaft (and
therefore the input shaft of the gearbox) turns at 1,800 revolutions per minute.
we observe that the output shaft of the gearbox is turning at 60 revolutions per
minute, and is producing 1 horsepower of usable power. from this data, we
can conclude that the efficiency of the gearbox is - correct answer 50%
, Bearings are designed to help relieve friction and control mechanical motion -
correct answer True
speed (v) is really the most important factor in bearing selection. pressure (p)
has little effect in the selection process - correct answer True
plain bearings are most often used in lower to moderate speed and moderate
to higher load applications - correct answer False
plain bearings can only be used in applications where the shaft rotates in one
direction - correct answer False
bronze, copper, lead and alloyed metals are examples of materials used in
plain bearing construction - correct answer True
plain bearings are not suited for extreme temperature applications - correct
answer False
mixed film lubrication can become full film lubrication by increasing the
viscosity of the lubricant - correct answer True
sintered bearings are solid machined bearings from brass or bronze with voids
that accept and hold lubricants - correct answer false
self-lubricating bearings have a lubricating medium as a component part of
the bearing structure - correct answer True
rated A+ 2025
Common units of torque are - correct answer lb-in
The definition of force is - correct answer a push or pull acting on an object
The equation for the circumference of a circle is: - correct answer 2*pi*r
friction always acts - correct answer in the direction opposite to that of motion
the definition of torque is - correct answer the tendency of a body to rotate
if we are given the torque and the rpm of a shaft, then we can calculate -
correct answer the horsepower output at that shaft
the definition of power is - correct answer the rate at which work is done
the standard unit of power in the imperial system is - correct answer HP
the principle of conservation of energy is - correct answer that energy can
neither be created nor destroyed
a 2 HP motor is attached to a gearbox by a coupling. the motor shaft (and
therefore the input shaft of the gearbox) turns at 1,800 revolutions per minute.
we observe that the output shaft of the gearbox is turning at 60 revolutions per
minute, and is producing 1 horsepower of usable power. from this data, we
can conclude that the efficiency of the gearbox is - correct answer 50%
, Bearings are designed to help relieve friction and control mechanical motion -
correct answer True
speed (v) is really the most important factor in bearing selection. pressure (p)
has little effect in the selection process - correct answer True
plain bearings are most often used in lower to moderate speed and moderate
to higher load applications - correct answer False
plain bearings can only be used in applications where the shaft rotates in one
direction - correct answer False
bronze, copper, lead and alloyed metals are examples of materials used in
plain bearing construction - correct answer True
plain bearings are not suited for extreme temperature applications - correct
answer False
mixed film lubrication can become full film lubrication by increasing the
viscosity of the lubricant - correct answer True
sintered bearings are solid machined bearings from brass or bronze with voids
that accept and hold lubricants - correct answer false
self-lubricating bearings have a lubricating medium as a component part of
the bearing structure - correct answer True
