Bennett Mechanical Test Gears and Belt Drives 2

Question 1

A driver gear with 10 teeth meshes with a driven gear of 40 teeth. What is the gear ratio?

Accepted Answer

1:4

Answer

4:1

Answer

1:2

Answer

2:1

Question 2

When a small gear drives a large gear, what happens to the rotational speed?

Accepted Answer

Speed decreases

Answer

Speed increases

Answer

Speed stays the same

Answer

Gear stops turning

Question 3

Two gears that mesh directly will rotate in which directions relative to each other?

Accepted Answer

Opposite directions

Answer

The same direction

Answer

They cannot rotate

Answer

Both stop

Question 4

An idler gear placed between a driver and driven gear primarily changes what?

Accepted Answer

The direction of rotation

Answer

The overall gear ratio

Answer

The number of teeth needed

Answer

The torque output only

Question 5

If a belt drive has a large pulley driving a small pulley, the small pulley will turn:

Accepted Answer

Faster

Answer

Slower

Answer

At the same speed

Answer

In reverse only

Question 6

A crossed (figure-eight) belt between two pulleys causes them to rotate:

Accepted Answer

In opposite directions

Answer

In the same direction

Answer

At twice the speed

Answer

Without slipping ever

Question 7

What is the main advantage of a gear train that reduces speed?

Accepted Answer

It increases torque

Answer

It reduces torque

Answer

It eliminates friction

Answer

It removes the need for a motor