Free Printable Gear ratios, torque and transmission speeds

Worksheets

Gear ratios, torque and transmission speeds

Total questions: 25

Worksheet time: 16mins

Name

Class

Date

When speed increases, what happens to the value of torque?

increases

decreases

stays constant

When speed decreases, what happens to the value of torque?

increases

decreases

stays constant

When speed is constant, what happens to the value of torque?

increases

decreases

stays constant

A gear ratio is defined as which of the following?

Teeth of gear : teeth of gear

gear shape : gear shape

Speed : torque

Looking at the picture, what is the gear ratio?

4:6

6:4

2:3

3:2

Looking at the picture, what is the gear ratio?

4:24

1:6

2:12

1:9

Looking at the picture, what is the gear ratio?

6:10

3:10

10:6

3:5

When gears are equal in size, what happens to the speed and torque?

Speed increases; torques decreases

Speed decreases; torque increases

Speed and torque are constant

When gears are equal in size, what is the gear ratio?

1:2

1:3

2:5

1:1

10.

When on a bike going uphill, what happens to the speed and torque?

Speed decreases; torques increases

Speed decreases; torques decreases

Speed increases; torques decreases

Speed increases; torques increases

11.

When on a bike going downhill, what happens to the speed and torque?

Speed decreases; torques increases

Speed decreases; torques decreases

Speed increases; torques decreases

Speed increases; torques increases

12.

True or false; both speed and torque can increase at the same time.

true

false

not enough information

13.

If the small gear is driving the large gear, what is happening to the torque?

Increase

Decrease

Remains constant

Not enough information

14.

True or false; the starting gear is the input gear.

true

false

not enough information

15.

In a gearbox with an input of 14 teeth, a constant mesh gear of 39 teeth, a counter shaft gear of 18 teeth, and an output gear of 33 teeth, what will the gear ratio be?

6:1

5:1

4:1

7:1

16.

For the same gear box with an input torque of 145Nm,what would the torque of the output gear be?

815Nm

695Nm

785Nm

725Nm

17.

For the same gearbox, if we have an input speed of 3245 rpm, what would the output shaft speed be?

16225 rpm

16755 rpm

649 rpm

705 rpm

18.

What doe a gear ratio do?

Calculates the change in speed and torque

Changes the speed of the input

Indentify the input and output

Nothing, it's just a fancy word for gears

19.

A gear ratio of 16:1 means that the driven gear rotates 16 times per revolution of the driver gear

True

False

20.

With a gear ratio of 14:1 and the driver gear having 18 teeth, how many teeth would the driven gear have

262

274

252

248

21.

What is the gear ratio displayed here

2:1

4:1

8:1

6:1

22.

What is the gear ratio displayed here?

7:1

8:1

4:1

6:1

23.

What is the gear ratio displayed here?

6:1

8:1

4:1

10:1

24.

How do you work out the speed of the output in a gearbox?

Input speed x gear ratio

Torque/gear ratio

Gear ratio x torque

Input speed/gear ratio

25.

Input torque x gear ratio is the calculation for working out?

Output torque

Output speed

Input torque

Output ration

100 %

Gear ratios, torque and transmission speeds

Total questions: 25

Worksheet time: 16mins

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