Gear Test Questions

Question 0

Mitre gears have a ratio of what

Answer 0

1:1

Question 1

Helical gear rotation is determined by what?

Answer 1

Direction of rotation is determined by the rotation of the shaft, change in rotation will change thrust load.

Question 2

Straight bevel gears Mounted at an angle other than 90° are called?

Answer 2

Angler Bevel gears

Question 3

Zeorl bevel gears have no?

Answer 3

Axial trust

Question 4

What is the shaft set up in a worm and worm wheel set up?

Answer 4

Crossing over but not on the same plane

Question 5

Pitch x no# starts=?

Answer 5

Lead

Question 6

What has maximum contact in a worm and worm wheel set up?

Answer 6

Double throated has maximum contact

Question 7

If no components are held in a planetary gear box this is in what position?

Answer 7

Neutral

Question 8

Where do you measure backlash?

Answer 8

At the pitch Circle half way up to the tooth

Question 9

Talking arms are used for what?

Answer 9

Turnbuckles stop gear boxes from rotating and tension belt.

Must be mounted 90° from the output point.

Question 10

What type of chain is used?

Answer 10

Positive infinely variable, laminated leaf chain?

Question 11

What is it called when you measure center to center on a tooth to another tooth

Answer 11

Circular pitch

Question 12

What do you shim in a worm and worm wheel set up?

Answer 12

Worm wheel

Question 13

Where do you measure backlash

Answer 13

At circular pitch

Question 14

What pattern is worm and worm wheel have?

Answer 14

Same hand ( anything crossing over has the same hand

Question 15

For a compound set up what is the minimum shaft and minimum gears required?

Answer 15

3 shafts 4 or more gears

Question 16

What is the gear ratio of a mitre gear

Answer 16

1:1 same amount of teeth

Question 17

Which gears have no axial thrust

Answer 17

Double helical or herringbone

Question 18

If pressure points are kept the same from a throated gear to a non-throated gear what would happen?

Answer 18

Hi a pressure points on a non-throated gear

Question 19

teeth divided by dia=

Answer 19

Dp

Question 20

starts divided by # of teeth on wheel=

Answer 20

Ratio

Question 21

What are the two common pressure angles

Answer 21

14.7° and 20°

Question 22

What bearings do you use on a worm gear

Answer 22

Tapered roller bearing

Question 23

Rolling action at the pitch line

Answer 23

Meshing action starts sliding to rolling back to sliding and the rolling happens at the pitch line. Lol

Question 24

Worm gear has greater friction or less friction

Answer 24

Has greatest friction

Question 25

Where do you not use an oil with EP additives

Answer 25

Spur gears

Question 26

Where would you use a hydraulic piston

Answer 26

For wet disc