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Gears and Torque Test

Last updated over 4 years ago

33 questions

Note from the author:

PLTW mechanisms test for automation and robotics. 

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Question 1

1.

Mechanisms are used to . . .

D    All of the above 

A     Change the direction of movement 

B     Changes the type of movement 

C    Change the speed/torque of movement  

Question 2

2.

Two meshed gears, like the picture, are connected to each other. What could be done to make the gears spin in the same direction?

A      Add a crank and slider

D    Change the gears to sprockets 

C    Add and idler gear in between red and blue gear 

B    Change the input and output gears 

Question 3

3.

What is the type of output movement?

A      Reciprocating 

B      Linear 

D      Rotary 

C      Oscillating 

Question 4

4.

What are the four kinds of movement mechanisms can have?

A     Rotary, Oscillating, Reciprocating, Linear 

D     Circular, Linear, Up, Down 

B     Up, Down, Left, Right 

C     Oscillating, Back and forth, Rotary, Circular 

Question 5

5.

Use the picture to tell which gear would need to be the input for a higher torque gear ratio?

B     The large gear 

A     The small gear 

C     You would need a motor 

D    You cannot increase the torque

Question 6

6.

Use the picture to tell which gear would need to be the input for a higher speed gear ratio?

A     The large gear 

C     You would need a motor 

D    You cannot increase the speed

B     The small gear 

Question 7

7.

Is this gear ratio geared for torque or speed? Input gear 36 teeth, output gear 12 teeth

B    Torque

A    Speed

Question 8

8.

Is this gear ratio geared for torque or speed? Input gear 6 teeth, output gear 54 teeth

A    Speed

B    Torque

Question 9

9.

Which mechanisms change rotary motion to linear motion?

B      Belt drive, cam and follower 

D      Leadscrew, crank and slider 

C      Rack and pinion, leadscrew 

A      Gear train, crank and slider 

Question 10

10.

Which mechanisms change rotary motion to reciprocating motion?

C       Crank and slider, cam and follower 

D      Rack and pinion, belt drive 

A       Gear train, crank and slider 

B       Worm wheel, crank and slider 

Question 11

11.

Which mechanism can transfer power around a corner?

D     Universal joint

B      Chain drive 

A      Bevel gear

C      Lead screw 

Question 12

12.

Which type of mechanism can be found in an ice cream scoop?

C      Rack and pinion 

D     Cam and follower 

A     Worm Wheel

B      Bevel gear 

Question 13

13.

Which of the following mechanisms can be used to increase torque?

B      Worm and wheel 

A      Universal Joint

C      Crank and Slider

D     None of the above 

Question 14

14.

If the input and output gears of a gear train are the same size then what is the gear ratio?

C       1:2 

D      There is not enough information to tell 

B       1:1 

A       2:1 

Question 15

15.

What is the gear ratio for the gear pictured. Do NOT Reduce. Use : to seperate the two numbers.

Question 16

16.

What is the gear ratio (smallest numbers) for the gear pictured.

Question 17

17.

In the gears pictured, what type of motion is being transferred?

A     Rotary to linear 

C     Rotary to rotary

B     Linear to rotary 

D     Rotary to oscillating 

Question 18

18.

In the gears pictured what type of motion is being transfered?

C     Rotary to linear  

B     Rotary to oscillating 

A      Rotary to rotary 

D     Linear to rotary  

Question 19

19.

What type of gear is being used in this picture?

Question 20

20.

What type of gear does this picture represent?

Question 21

21.

What type of gear is pictured here?

Question 22

22.

What type of gear is represented in the picture?

Question 23

23.

Name the gear that transits power and motion to the rest of the system.

B     Output gear

C     Gear ratio

A     Driven gear

D     Input gear

Question 24

24.

What does the idler gear do for the input and output gears?

C     Allow the input and output gears to flow in opposite directions.

A     It increase the flow of energy.

D     The ideler gear does not have any effect on the input and output gears.

B     Allow the input and output gears to flow in the same direction.

Question 25

25.

Which type of mechanism can be found in a print roller?

B     Simple gear

C     Lead screw

A     Worm wheel

D     Simple gear with idler

Question 26

26.

An increase in torque and a change in direction causes a decrease in speed. This is an example of

Gear change

Gear down

Gearing

Gear up

Question 27

27.

What is this part called?

Shafts

Sticks

Axels

Stabbing tools

Question 28

28.

What is the name of this piece?

Nylock

Bearing

Shaft Collar

KEPS Nut

Question 29

29.

What is this piece used for?

Transmitting force

Mounting a gear 

Keeping a shaft from moving around

Spacing things out, so they don't rub together.

Question 30

30.

There is only ONE correct way to attach these - which one is it?

Rivets go through the metal, into the bottom of the bearing.

Rivets go through the metal, into the top of the bearing

Rivets go through the bottom of the bearing, into the metal

Rivets go through the top of the bearing into the metal.

Question 31

31.

What is the gear ratio for this gear if A is the Driven gear? DO NOT REDUCE.

Question 32

32.

What type of movement is being generated by the OUTPUT gear?

Linear

Recipicating

Rotary

Oscillation

Question 33

33.

What is the angle of the input shaft to the output shaft?

360 degrees

Perpendicular

180 degrees

Parallel