CPS Mechanical Aptitude Principles 2

Question 1

Two gears mesh together. The driver gear has 10 teeth and the driven gear has 30 teeth. If the driver turns at 60 RPM, how fast does the driven gear turn?

Accepted Answer

20 RPM

Answer

60 RPM

Answer

90 RPM

Answer

180 RPM

Question 2

When two meshed gears are in direct contact, how do their rotation directions compare?

Accepted Answer

They rotate in opposite directions

Answer

They rotate in the same direction

Answer

Direction depends on gear size

Answer

One stays still

Question 3

A first-class lever has the fulcrum located where?

Accepted Answer

Between the effort and the load

Answer

At the same point as the load

Answer

At the effort end only

Answer

Outside both the effort and load

Question 4

To lift a heavy load with the least effort using a lever, where should you apply the force?

Accepted Answer

As far from the fulcrum as possible

Answer

As close to the fulcrum as possible

Answer

Directly on the fulcrum

Answer

On top of the load

Question 5

A fixed single pulley changes which property of an applied force?

Accepted Answer

The direction of the force

Answer

The magnitude of the force

Answer

Both direction and magnitude

Answer

Neither direction nor magnitude

Question 6

Water flows through a pipe that narrows from a wide section to a narrow section. What happens to the water's speed in the narrow section?

Accepted Answer

It increases

Answer

It decreases

Answer

It stays the same

Answer

It stops

Question 7

Which simple machine is a doorknob an example of?

Accepted Answer

Wheel and axle

Answer

Inclined plane

Answer

Pulley

Answer

Wedge