Mechanical Aptitude FREE Mechanical Aptitude Question and Answers 3

Question 1

In a pulley system with four supporting ropes, how much force is needed to lift a 200 lb load (ignoring friction)?

Accepted Answer

50 lbs

Answer

With four supporting ropes, the required force is the load divided by four: 200 ÷ 4 = 50 lbs.

Question 2

What is the primary purpose of a flywheel in a mechanical system?

Accepted Answer

To store rotational energy and smooth out power delivery

Answer

A flywheel stores kinetic energy during power strokes and releases it during dead spots to maintain consistent rotation.

Question 3

If a ramp is 12 feet long and 3 feet high, what is its mechanical advantage?

Accepted Answer

4

Answer

The mechanical advantage of an inclined plane equals length divided by height: 12 ÷ 3 = 4.

Question 4

Two meshed gears rotate in which relative direction?

Accepted Answer

Opposite directions

Answer

When two gears are meshed directly, their teeth interlock causing them to rotate in opposite directions.

Question 5

Which material property describes its ability to return to its original shape after being deformed?

Accepted Answer

Elasticity

Answer

Elasticity is the ability of a material to deform under stress and return to its original shape when the stress is removed.

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