Have an account?
Skip to Content
Build your own quiz
Suggestions for you
29 questions
Show Answers
See Preview
- 1. Multiple Choice
When speed increases, what happens to the value of torque?
increases
decreases
stays constant
- 2. Multiple ChoiceWhen speed decreases, what happens to the value of torque?increasesdecreasesstays constant
- 3. Multiple Choice
What is the function of the smaller gear?Makes the output gear turn slowerMakes the output gear turn fasterMakes the larger gears turn in opposite directions.Makes the larger gears turn in the same direction. - 4. Multiple Choice
When the output gear is larger than the input gear you have.....
Increased Speed, decreased torque
Increased Torque, decreased speed
- 5. Multiple ChoiceWhen gears are equal in size, what is the gear ratio?1:21:32:51:1
- 6. Multiple ChoiceTrue or false; both speed and torque can increase at the same time.truefalsenot enough information
- 7. Multiple Choice
# of teeth input gear = 60
# of teeth output gear = 30
What is the gear ratio (in lowest terms)?
1:2
3:2
2:1
2:5
- 8. Multiple Choice
# of teeth input gear = 25
# of teeth output gear = 75
What is the gear ratio (in lowest terms)?
3:1
2:1
3:4
- 9. Multiple Choice
# of teeth input gear = 20
# of teeth output gear = 80
What is the gear ratio (in lowest terms)?
40:10
20:5
4:1
- 10. Multiple Choice
If the pink gear is the input gear and the blue gear is the output gear, what will happen with speed and torque?
increase speed, decrease torque
decrease speed, increase torque
speed & torque remain constant
- 11. Multiple Choice
# of teeth input gear = 36
# of teeth output gear = 12
What is the gear ratio (in lowest terms)?
12:36
36:12
3:1
1:3
- 12. Multiple Choice
What does a 1:6 gear ratio mean?
It means the input gear has to turn 1 time to turn the output gear 6 times.
It means the output gear has to turn 1 time to turn the input gear 6 times.
- 13. Multiple ChoiceWhen you add a third gear onto your assembly, do the input and output gears move in the same direction or opposite?SameOpposite
- 14. Multiple Choice
What is the overall Gear Ratio?
3 : 1
4 : 1
12 : 1
1 : 15
- 15. Multiple Choice
What is the overall Gear Ratio?
18
1 : 6
18 : 1
1 : 18
- 16. Multiple Choice
What is the speed of the larger gear?
20 rpm
500 rpm
80 rpm
100 rpm
- 17. Multiple Choice
What is the torque of the larger gear?
7.5 N-m
0.3 N-m
1.5 N-m
3 N-m
- 18. Multiple Choice
# of teeth input gear = 20
# of teeth output gear = 80
If the driver rotates at 100 rpm, how fast is the driven gear rotating?
100 rpm
20 rpm
25 rpm
40 rpm
- 19. Multiple Choice
# of teeth input gear = 20
# of teeth output gear = 80
If the driven gear requires a torque of 100 ft-lb, how much torque should the driver gear have?
100 ft-lb
20 ft-lb
25 ft-lb
40 ft-lb
- 20. Multiple Choice
# of teeth input gear = 25
# of teeth output gear = 75
If the input torque is 150 ft-lbs, what is the torque of the output gear?
50 ft-lb
450 ft-lb
150 ft-lb
- 21. Multiple Choice
# of teeth input gear = 25
# of teeth output gear = 75
If the output gear is rotating at 30 rpm, how fast is the input gear rotating?
10 rpm
90 rpm
30 rpm
75 rpm
- 22. Multiple Choice
The figure shown is an example of a...
Gear Train
Gear Ratio
Compound Gear
Combination Gear
- 23. Multiple Choice
How do you calculate the torque on an object/ axle?
Torque = Force x Distance parallel
Torque = Force x Distance perpendicular
Torque = angular velocity x Power
Torque = Power / Energy
- 24. Multiple Choice
What is torque?
Torque is the amount of energy transferred to an object by a force.
Torque is how fast an object rotates.
Torque is a turning force on an object causing it to rotate.
Torque is a force that an object is able to apply.
- 25. Multiple Choice
If a given motor stalls at a torque of 20 lb*ft, what is the torque the motor should be outputting in order to maximize motor power?
40 lb*ft
10 lb*ft
20 lb*ft
5 lb*ft
- 26. Multiple Choice
If a motor has a no-load speed of 4,000 rpm; what speed will it rotate with if it is at its stall torque?
4,000 rpm
2,000 rpm
1,000 rpm
0 rpm
- 27. Multiple Choice
If a motor has a no-load speed of 4,000 rpm; what speed will it rotate with if it is at 1/2 of its stall torque?
4,000 rpm
2,000 rpm
1,000 rpm
0 rpm
- 28. Multiple Choice
A motor is drawing 2 amps of current from a 120 volt source, and is applying a torque of 10 N*m. Assuming perfect efficiency (no power lost), what is the angular velocity of the motor?
24 rad/s
6 rad/s
18 rad/s
12 rad/s
- 29. Multiple Choice
If a motor is using 500 Watts of electrical power, and is hooked up to a gearbox that outputs 350 Watts of power, what is the efficiency of this system?
143%
100%
85%
70%
- Answer choicesTagsAnswer choicesTags