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Test your basic knowledge |
Mechanical Gears
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. For a bevel gear assembly - what is the gear ratio?
Same direction
90 degrees
1:1
Reciprocating
2. For a simple gear with idler - compare the direction of travel between input and output gears.
They turn the same way
The flow of power
1:1
Constant
3. For a simple gear with idler - the position of the ________ compared to the output shaft is parallel.
direction
Input shaft
not reversible
The flow of power
4. For a worm and wheel - the direction of travel is...
not reversible
Is reversible
Same direction
6
5. For a crown and pinion - is the speed increased - decreased - or constant?
Increased
direction of travel
Decrease - increase
Same
6. For a crank and slider - the input to this system is what type of motion?
Once - 1:1
Reciprocating
Perpendicular
Rotary
7. For a lead screw - what is the type of output movement?
Decreased
Speed - torque
Linear
Reversible
8. For a worm and wheel - the flow of power is...
not reversible
Rotary
direction of travel
Decreased
9. For a simple gear with idler - is the speed increased - decreased - or constant?
6
Decreased
Is constant
Once - 1:1
10. For a universal joint - what is the angular range between the input shaft and the output shaft in which this mechanism will work?
Lead screw - rack and pinion
Longer
90<x<270
They turn the same way
11. For a simple gear with idler - what is the gear ratio?
Reversible
4:1
Cam and follower
Constant
12. When a big gear turns a small one - the output provides more... but less... than the input.
direction of travel
Speed - torque
Same direction
Same
13. For a simple gear with idler - predict what the direction of travel would be between the input and output gears if the idler gear is eliminated from the mechanism.
The output gear would turn the opposite way
Linear
Rotary
Torque
14. For a bevel gear assembly - what is the angle of the input shaft compared to the output shaft?
Torque
Increased
1:1
90 degrees
15. For a pulley and belt - the input shaft turn in the _____ direction as the output shaft
Same
Decreased
Reversible
Reciprocating
16. For a cam and follower - the ______ of travel is reversible
not
direction
Speed - torque
1:1
17. For a pulley and belt - is the torque increased - decreased - or constant?
Decreased
20:1
Parallel
Input shaft
18. For a simple gear with idler - is the torque increased - decreased - or constant?
4:1
Increased
Torque
3.2:1
19. For a worm and wheel - is the torque increased - decreased - or constant?
Decrease - increase
Increased
Reversible
6
20. For a universal joint - what is the speed ratio of the input shaft to the output shaft?
Linear
1:1
Reversible
90<x<270
21. For a universal joint - do the input and output shafts turn in the...
90 degrees
direction
Reversible
Same direction
22. For a rack and pinion - what is the type of input movement?
Longer
Turns of output gear = number of teeth on output gr turns of output gear = number of teeth on input gr
Rotary
Lead screw - rack and pinion
23. For a crown and pinion - _______ is reversible
90 degrees
flow of power
Longer
The flow of power
24. For a lead screw - which is increased in the output? force or speed?
Once - 1:1
Speed
90 degrees
1:2.5
25. The difference between linear and reciprocating mechanisms is that in a linear mechanism - in order to make the output move in the opposite direction - you have to turn the input... In a reciprocating mechanism - the mechanism moves...... when the in
Opposite - back & forth - in one direction
Linear - 2 inches
Turns of output gear = number of teeth on output gr turns of output gear = number of teeth on input gr
Once - 1:1
26. For a lead screw - the flow of power is ____reversible
Reversible
Decreased
Parallel
not
27. For a pulley and belt - is the flow of power is...
bevel
Increased
Reversible
Longer
28. For a crank and slider - the output of this system is what type of motion?
1:1
Is reversible
Decreased
Reciprocating
29. For a worm and wheel - what is the angle of the input shaft compared to the output shaft?
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30. For a bevel gear assembly - is the _____ is constant
Lead screw - rack and pinion
Torque
flow of power
The flow of power is reversible
31. For a lead screw - how many revolutions of the crank are needed to move the screw block 1 inch?
Rotary
Reversible
Decreased
6
32. For a crank and - if the diameter of the crank gear were increased - would the slider move a shorter or longer distance?
Cam and follower
Longer
1:1
Opposite - back & forth - in one direction
33. For a worm and wheel - is the speed increased - decreased - or constant?
Constant
Is reversible
Same direction
Decreased
34. For a crown and pinion - is the torque increased - decreased - or constant?
The output gear would turn the opposite way
Decreased
Increased
They're perpendicular
35. Gear ratio formula
Turns of output gear = number of teeth on output gr turns of output gear = number of teeth on input gr
Increased
Is reversible
Increased
36. For a universal joint - is the speed increased - decreased - or constant?
not reversible
4:1
Reversible
Constant
37. For a crown and pinion - what is the angle of the input shaft compared to the output shaft?
Reciprocating
The flow of power is reversible
90 degrees
Perpendicular
38. For a pulley and belt - the input shaft does not turn in the same direction as the output shaft if the belt...
Torque
Is crossed
Reversible
Linear - 2 inches
39. For a rack and pinion - the flow of power is...
Reversible
Speed - torque
Reversible
Decreased
40. For a universal joint - the torque...
Rotary
Is constant
Is reversible
Lead screw - rack and pinion
41. For a crown and pinion - what is the gear ratio?
Longer
3.2:1
Perpendicular
not
42. For a _____ gear assembly - the flow of power is reversible
Decreased
bevel
Is reversible
1:2.5
43. For a universal joint...
Torque
The flow of power is reversible
90 degrees
Increased
44. For a cam and follower - what is the type of input movement?
Parallel
Linear
Speed
Rotary
45. For a pulley and belt - what is the input to output ratio?
1:2.5
Torque
Increased
4:1
46. For a lead screw - is the direction of travel...
Same direction
Is reversible
Increased
Rotary
47. For a simple gear with idler - the ______ is reversible
Rotary
Same
Same direction
flow of power
48. For rack and pinion - if the diameter of the pinion gear were increased - would the rack move a shorter or longer distance?
Same
Speed
Longer
90<x<270
49. For a pulley and belt - what is the position of the input shaft compared to the output shaft?
They're perpendicular
Longer
Parallel
Input shaft
50. For a __________- the flow of power is not reversible
Cam and follower
Rotary
4:1
The output gear would turn the opposite way