2026 MILLWRIGHT LEVEL 3 REVIEW SET
QUESTIONS AND ANSWERS SURE A+
✔✔What hand helical gears cross at 90° - ✔✔Same hand
✔✔What hand helical gears when parallel - ✔✔Opposite hand
✔✔What do you use to measure gear contact - ✔✔Prussian blue
✔✔What gears contact and 90° - ✔✔Miter gears
✔✔What is the max inclination on a welding rod - ✔✔15° or 2.5 mins
✔✔What is the cause of undercut - ✔✔To much heat
✔✔What are the types of welding joints - ✔✔Butt, lap, T, edge, corner, plug
✔✔What causes ozone - ✔✔The oxygen in the air coming in contact with the uv light
from welding
✔✔What keeps tension on a mechanical seal - ✔✔Spring / bellow
✔✔Why do you use tungsten in GTAW - ✔✔Because it can handle extreme heat and
not lose hardness
✔✔What type of ROLLER chain is used in high speed - ✔✔Multi strand (silent chain
doesn't have rollers)
✔✔What type of clutch is used on vertical conveyors - ✔✔One way clutch
✔✔How much wrap do you want on a sprocket - ✔✔120°
, ✔✔What is the minimum contact on timing belts - ✔✔6 teeth
✔✔What is softer material in a disk clutch - ✔✔Friction plate
✔✔What has a greater diameter in disk clutch - ✔✔Single disk
✔✔How does a contracting shoe work - ✔✔Contracts on to the drum
✔✔How do you adjust friction plate clutch - ✔✔The wear adjusting ring
✔✔What is an example of a torque limiting device - ✔✔Belvel spring
✔✔Where is the impeller located - ✔✔Input shaft
✔✔What is a double single sprocket - ✔✔2 sprockets one 1 hub
✔✔What are the first 2 digit in a woodruff key - ✔✔Width of key over 32
✔✔What are the last 2 digits in a woodruff key - ✔✔Nominal diameter over 8
✔✔What does number #85 chain represent - ✔✔8 is chain pitch over 8 and 5 is roller
type 5 is no rollers 0 is rollers and 1 is light duty
✔✔Sprocket code 80B120 - ✔✔80 is chain size B is hub style and 120 is gear teeth
✔✔Types of sprocket hubs - ✔✔A no hub, B hub on one side, C hub on both sides, D is
a split design
✔✔Size of a 1/4 drive pulley - ✔✔5.5 times the the largest sheeve
✔✔Allowable misalignment for gear and belt drive pulleys - ✔✔1/16 in per foot
✔✔What bearing is used where temperature fluctuate greatly - ✔✔CARB (Compact
aligning roller bearing)
✔✔What are the 3 ways of trouble shooting a welding machine - ✔✔Process, electrical
and mechanical
✔✔What contact finish is better for welding - ✔✔Ground
✔✔What kind of weld will spot welding give you - ✔✔Concave welds
✔✔What is the maximum amps for a air cooled machine - ✔✔200amps
QUESTIONS AND ANSWERS SURE A+
✔✔What hand helical gears cross at 90° - ✔✔Same hand
✔✔What hand helical gears when parallel - ✔✔Opposite hand
✔✔What do you use to measure gear contact - ✔✔Prussian blue
✔✔What gears contact and 90° - ✔✔Miter gears
✔✔What is the max inclination on a welding rod - ✔✔15° or 2.5 mins
✔✔What is the cause of undercut - ✔✔To much heat
✔✔What are the types of welding joints - ✔✔Butt, lap, T, edge, corner, plug
✔✔What causes ozone - ✔✔The oxygen in the air coming in contact with the uv light
from welding
✔✔What keeps tension on a mechanical seal - ✔✔Spring / bellow
✔✔Why do you use tungsten in GTAW - ✔✔Because it can handle extreme heat and
not lose hardness
✔✔What type of ROLLER chain is used in high speed - ✔✔Multi strand (silent chain
doesn't have rollers)
✔✔What type of clutch is used on vertical conveyors - ✔✔One way clutch
✔✔How much wrap do you want on a sprocket - ✔✔120°
, ✔✔What is the minimum contact on timing belts - ✔✔6 teeth
✔✔What is softer material in a disk clutch - ✔✔Friction plate
✔✔What has a greater diameter in disk clutch - ✔✔Single disk
✔✔How does a contracting shoe work - ✔✔Contracts on to the drum
✔✔How do you adjust friction plate clutch - ✔✔The wear adjusting ring
✔✔What is an example of a torque limiting device - ✔✔Belvel spring
✔✔Where is the impeller located - ✔✔Input shaft
✔✔What is a double single sprocket - ✔✔2 sprockets one 1 hub
✔✔What are the first 2 digit in a woodruff key - ✔✔Width of key over 32
✔✔What are the last 2 digits in a woodruff key - ✔✔Nominal diameter over 8
✔✔What does number #85 chain represent - ✔✔8 is chain pitch over 8 and 5 is roller
type 5 is no rollers 0 is rollers and 1 is light duty
✔✔Sprocket code 80B120 - ✔✔80 is chain size B is hub style and 120 is gear teeth
✔✔Types of sprocket hubs - ✔✔A no hub, B hub on one side, C hub on both sides, D is
a split design
✔✔Size of a 1/4 drive pulley - ✔✔5.5 times the the largest sheeve
✔✔Allowable misalignment for gear and belt drive pulleys - ✔✔1/16 in per foot
✔✔What bearing is used where temperature fluctuate greatly - ✔✔CARB (Compact
aligning roller bearing)
✔✔What are the 3 ways of trouble shooting a welding machine - ✔✔Process, electrical
and mechanical
✔✔What contact finish is better for welding - ✔✔Ground
✔✔What kind of weld will spot welding give you - ✔✔Concave welds
✔✔What is the maximum amps for a air cooled machine - ✔✔200amps
