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Gear ratio after lesson review

Total questions: 18

Worksheet time: 59mins

Name
Class
Date
1.

What is the mechanical advantage of this gear ratio?

a)

Torque Advantage

b)

Speed Advantage

c)

no Mechanical Advantage

2.

What is the mechanical advantage of this gear ratio?

a)

Torque Advantage

b)

Speed Advantage

c)

no Mechanical Advantage

3.

How is a gear ratio written?

a)
b)

# of Teeth of the Driving Grear / # of Teeth of the Driven Gear

4.

Does the Driving Gear or Driven Gear have the motor attached?

a)

The Driving Gear has the motor attached

b)

The Driven Gear has the motor attached

5.

What is the mechanical advantage of this gear ratio?

a)

1: 3 Torque Advantage

b)

1: 3 Speed Advantage

c)

no Mechanical Advantage

6.

A 12 Tooth driving gear (connected to the motor) is connected to a 36 tooth driven gear. What is the gear ratio and mechanical advantage?

a)

3: 1 Torque Advantage

b)

3: 1 Speed Advantage

c)

no Mechanical Advantage

7.

A 36 tooth driving gear (connected to the motor) is moving a 12 tooth driven gear. What is the gear ratio?... It has a speed advantage.

a)

3:1

b)

1:3

c)

3:3

d)

1:1

8.

What is the mechanical advantage of this gear ratio?

a)

Torque Advantage

b)

Speed Advantage

c)

no Mechanical Advantage

9.

What is the mechanical advantage of 1:5 gear ratio?

a)

Torque Advantage

b)

Speed Advantage

c)

no Mechanical Advantage

10.

What is the mechanical advantage of 5:1 gear ratio?

a)

Torque Advantage

b)

Speed Advantage

c)

no Mechanical Advantage

11.
When speed decreases, what happens to the value of torque?
a)
increases
b)
decreases
c)
stays constant
12.
When speed increases, what happens to the value of torque?
a)
increases
b)
decreases
c)
stays constant
13.

What is the gear ratio of a gear train with an input (Driving) gear of 48 teeth and an output (Driven) gear with 12 teeth?

a)

1:4

b)

1:3

c)

4:1

d)

3:1

14.

Gears spin in

a)

Opposite directions

b)

the same direction

15.

When you have a system with a driving gear that is LARGER than the driven gear you will increase Speed and decrease _____

a)

speed

b)

ratio

c)

Momentum

d)

Torque

16.
When on a bike going uphill, what happens to the speed and torque?
a)
Speed decreases; torques increases
b)
Speed decreases; torques decreases
c)
Speed increases; torques decreases
d)
Speed increases; torques increases
17.

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

a)

Speed decreases; torques increases

b)

Speed decreases; torques decreases

c)

Speed increases; torques decreases

d)

Speed increases; torques increases

18.

What's the ratio?

a)

1:1

b)

84 : 60

c)

60 : 36