Bennett Mechanical Test Comprehension 2

Question 1

Two gears mesh together. If the driver gear turns clockwise, which way does the driven gear turn?

Accepted Answer

Counterclockwise

Answer

Meshing gears always rotate in opposite directions.

Question 2

A lever has its load close to the fulcrum and effort far away. What does this arrangement provide?

Accepted Answer

A mechanical advantage that reduces effort needed

Answer

A longer effort arm relative to the load arm reduces the force required.

Question 3

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

Accepted Answer

It increases

Answer

The same volume forced through a smaller area must move faster.

Question 4

Which surface produces the most friction when an object slides across it?

Accepted Answer

Rough concrete

Answer

Rougher surfaces create more friction than smooth or lubricated ones.

Question 5

A pulley system uses two supporting rope sections to lift a load. How does this affect the effort needed?

Accepted Answer

It roughly halves the effort

Answer

Each supporting rope section shares the load, reducing required effort.

Bennett Mechanical Test Practice Test