Bennett Mechanical Test Comprehension 4

Question 1

A screw is essentially which simple machine wrapped around a cylinder?

Accepted Answer

An inclined plane

Answer

A screw's threads are an inclined plane spiraled around a shaft.

Question 2

Three identical gears are in a line, all meshed. If the first turns clockwise, the third turns:

Accepted Answer

Clockwise

Answer

Direction alternates, so the first and third gears turn the same way.

Question 3

A heavier object and a lighter object are dropped together in a vacuum. They:

Accepted Answer

Hit the ground at the same time

Answer

Without air resistance, all objects fall at the same rate.

Question 4

To balance a seesaw, a lighter child should sit:

Accepted Answer

Farther from the center

Answer

Sitting farther out increases the lighter child's turning effect to match the heavier child.

Question 5

A belt connects two pulleys without crossing. The two pulleys rotate:

Accepted Answer

In the same direction

Answer

An uncrossed belt makes both pulleys spin the same way.

Bennett Mechanical Test Practice Test