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WorksheetsPLTW
Total questions: 16
Worksheet time: 28mins
Name
Class
Date
1.
A force in a circular direction is called
a)
rotary motion.
b)
torque.
2.
A comparison of the number of teeth of one gear to another.
a)
gear total
b)
gear purpose
c)
gear ratio
3.
Movement in a circular motion
a)
Rotary
b)
Oscillating
c)
Linear
d)
Reciprocating
4.
Movement that goes back and forth in a straight line
a)
Rotary
b)
Linear
c)
Oscillating
d)
Reciprocating
5.
Movement along an arched path; back and forth
a)
rotary
b)
oscillating
c)
reciprocating
d)
linear
6.
The gear train in which diagram provides more torque?
a)
A
b)
B
7.
The input gear has 6 teeth.
The output gear has 48 teeth. The gear ratio is...
The output gear has 48 teeth. The gear ratio is...
a)
1:8
b)
8:1
c)
6:48
8.
What is the BEST explanation for a gear train with a 7:1 gear ratio?
a)
The drive gear turns 1 time for every 7 turns of the driven gear.
b)
The driven gear turns 7 times for 1 turn of the drive gear.
c)
The gear goes fast!
9.
When gears are equal in size, what is the gear ratio?
a)
1:2
b)
1:3
c)
2:5
d)
1:1
10.
If the small gear is driving the large gear, what is happening to the torque?
a)
Torque is increasing
b)
Torque is decreasing
c)
Torque remains constant
d)
Not enough information to answer the question
11.
The image shown is a vice grip. When the lever is rotated, the grips move towards each other. What are the input and output motions?
a)
input=linear
output=linear
output=linear
b)
input=linear
output=reciprocating
output=reciprocating
c)
Input=rotary
output=rotary
output=rotary
d)
Input=rotary
Output=linear
Output=linear
12.
What is the name of this mechanism?
a)
Simple Gear Train
b)
Gear Train with Idler
c)
Worm and Wheel
d)
Rack and Pinion
13.
What happens to the torque in this mechanism?
a)
Increases
b)
Decreases
c)
Remains Constant
14.
What happens to the speed in this mechanism?
a)
Increases
b)
Decreases
c)
Remains Constant
15.
If torque increases, speed ___________.
a)
Increases
b)
Decreases
c)
Remains Constant
16.
What is the gear ratio of these meshed gears if the input gear has 36 teeth?
a)
36:60
b)
60:36
c)
3:5
d)
5:3
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