MILLWRIGHT LEVEL 3 ACTUAL UPDATED
QUESTIONS AND ANSWERS SURE A+
✔✔What 4 points should be considered when designing a chute? - ✔✔Centre material,
feeder in the same direction of belt travel, reduce impact, steep enough to prevent
material from sticking to the sides
✔✔What type of return idlers are used when sticky material is being transported? -
✔✔Spiral
✔✔What things would affect belt tracking? - ✔✔Frame damage, foundation settling, off-
center loading, incorrect belt splice, take up carriage out of line, incorrect belt tension,
material buildup on idlers
✔✔On long belts, the return rollers may be inclined at ____ to form a V. - ✔✔10 or 20°
✔✔What three methods can be used to remove a tramp iron from the material? -
✔✔Suspended magnet, magnetic head pulley, separate magnetic belt above discharge
✔✔Which side of the belt is usually thicker, the top cover or the bottom cover? - ✔✔The
top cover thicker, this is because it must resist gouging or abrasion on the carrying side.
, ✔✔What is a gravity take up? - ✔✔They are usually mounted by the drive pulley, and
are used on conveyors which have a distance between the head and tail pulley greater
than 100 feet. The take up assembly floats up and down according to the load or during
start up and stop operations.
✔✔What is a transition conveyor? - ✔✔The transition conveyor is designed to be the
weak link in the system. It takes the brunt of the load and impact before it transitions to
the main belt.
✔✔What is a grizzly shoot? - ✔✔A grizzly or screened loading chute allows the fine
material to load ahead of the bigger lumps, thereby reducing impact on the belt.
✔✔What is a backstop on a conveyor? - ✔✔Conveyor backstops or a type of clutch that
works like a ratchet by allowing rotation in one direction only. They are used on incline
conveyors that require a form of brake to prevent the belt or elevator from rotating
backward.
✔✔What are five methods for controlling the deceleration of a declined conveyor? -
✔✔Mechanical friction, eddy current, plugging the motor, dynamic braking, and
regenerative braking.
✔✔Where are gravity take ups usually put? - ✔✔They are usually mounted near the
drive pulley. They are usually used on conveyors which have a distance between head
and tail pulley greater than 100 ft.. - M.M. 19-13
✔✔What are 10 types of feeders for conveyors? - ✔✔Screw, belt, drag, apron,
reciprocating plate, vibrating, rotary vane, rotary drum, rotary table, and feed control
gates.
✔✔What is the arc of contact on a drive pulley using a snub pulley? - ✔✔190 to 240
degrees
✔✔What is a normal arc of contact on a tandem drive? - ✔✔360 to 420 degrees - M.M.
19-24
✔✔What are 4 types of bucket elevators? - ✔✔Centrifugal discharge, continuous
bucket, super capacity, and positive discharge - Millwright Manual 19-36
✔✔List 3 chain conveyor designs. - ✔✔Parallel strand, gravity drop, S Drive.
✔✔Name 4 commonly used chain styles. - ✔✔Combination, pintle, H class, drag,
refuse, detachable, transfer
QUESTIONS AND ANSWERS SURE A+
✔✔What 4 points should be considered when designing a chute? - ✔✔Centre material,
feeder in the same direction of belt travel, reduce impact, steep enough to prevent
material from sticking to the sides
✔✔What type of return idlers are used when sticky material is being transported? -
✔✔Spiral
✔✔What things would affect belt tracking? - ✔✔Frame damage, foundation settling, off-
center loading, incorrect belt splice, take up carriage out of line, incorrect belt tension,
material buildup on idlers
✔✔On long belts, the return rollers may be inclined at ____ to form a V. - ✔✔10 or 20°
✔✔What three methods can be used to remove a tramp iron from the material? -
✔✔Suspended magnet, magnetic head pulley, separate magnetic belt above discharge
✔✔Which side of the belt is usually thicker, the top cover or the bottom cover? - ✔✔The
top cover thicker, this is because it must resist gouging or abrasion on the carrying side.
, ✔✔What is a gravity take up? - ✔✔They are usually mounted by the drive pulley, and
are used on conveyors which have a distance between the head and tail pulley greater
than 100 feet. The take up assembly floats up and down according to the load or during
start up and stop operations.
✔✔What is a transition conveyor? - ✔✔The transition conveyor is designed to be the
weak link in the system. It takes the brunt of the load and impact before it transitions to
the main belt.
✔✔What is a grizzly shoot? - ✔✔A grizzly or screened loading chute allows the fine
material to load ahead of the bigger lumps, thereby reducing impact on the belt.
✔✔What is a backstop on a conveyor? - ✔✔Conveyor backstops or a type of clutch that
works like a ratchet by allowing rotation in one direction only. They are used on incline
conveyors that require a form of brake to prevent the belt or elevator from rotating
backward.
✔✔What are five methods for controlling the deceleration of a declined conveyor? -
✔✔Mechanical friction, eddy current, plugging the motor, dynamic braking, and
regenerative braking.
✔✔Where are gravity take ups usually put? - ✔✔They are usually mounted near the
drive pulley. They are usually used on conveyors which have a distance between head
and tail pulley greater than 100 ft.. - M.M. 19-13
✔✔What are 10 types of feeders for conveyors? - ✔✔Screw, belt, drag, apron,
reciprocating plate, vibrating, rotary vane, rotary drum, rotary table, and feed control
gates.
✔✔What is the arc of contact on a drive pulley using a snub pulley? - ✔✔190 to 240
degrees
✔✔What is a normal arc of contact on a tandem drive? - ✔✔360 to 420 degrees - M.M.
19-24
✔✔What are 4 types of bucket elevators? - ✔✔Centrifugal discharge, continuous
bucket, super capacity, and positive discharge - Millwright Manual 19-36
✔✔List 3 chain conveyor designs. - ✔✔Parallel strand, gravity drop, S Drive.
✔✔Name 4 commonly used chain styles. - ✔✔Combination, pintle, H class, drag,
refuse, detachable, transfer
