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PLTW Observing Mechanisms SRS

Total questions: 10

Worksheet time: 14mins

Name
Class
Date
1.

Which gear is the idler?

a)

A

b)

B

c)

C

d)

None of them

2.
Movement in a circular motion
a)
Rotary 
b)
Oscillating
c)
Linear
d)
Reciprocating
3.
Movement that goes back and forth in a straight line
a)
Rotary
b)
Linear
c)
Oscillating
d)
Reciprocating 
4.
The gear train in which diagram provides more torque?
a)
A
b)
B
5.
The input gear has 6 teeth.
The output gear has 48 teeth.  The gear ratio is...
a)
1:8
b)
8:1
c)
6:48
6.

What mechanism is part of this machine?

a)

Lead Screw

b)

Rack and Pinion

c)

Simple Gear train with Idler

d)

Simple gear train - NO idler

e)

Worm and Wheel

7.
What happens to speed
when you increase torque?
a)
Speed Increases
b)
Speed decreases
c)
Speed stays the same
8.

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

9.

What does a 2:1 gear ratio mean?

a)

For every 1 turn of the input, the output turns 2 times.

b)

For every 2 turns of the input, the output turns 1 time.

c)

There are 2 gears on the output and 1 gear on the input.

d)

There is 1 gear on the output and 2 gears on the input.

10.

What types of motion are seen here?

a)

linear and reciprocating

b)

oscillating and reciprocating

c)

oscillating and rotary

d)

reciprocating and linear