Mechanical Aptitude Knowledge Questions and Answers 3

Question 1

What is the function of a governor in a mechanical system?

Accepted Answer

To automatically regulate speed

Answer

To increase speed

Answer

To measure temperature

Answer

To generate torque

Question 2

What is the difference between ferrous and non-ferrous metals?

Accepted Answer

Ferrous metals contain iron, non-ferrous do not

Answer

Ferrous metals are lighter

Answer

Non-ferrous metals are stronger

Answer

Ferrous metals do not rust

Question 3

What mechanical principle explains why longer wrenches require less effort to turn a bolt?

Accepted Answer

Mechanical advantage through leverage

Answer

Gear ratio

Answer

Friction reduction

Answer

Centripetal force

Question 4

What is the purpose of tempering steel after it has been hardened?

Accepted Answer

To reduce brittleness while maintaining hardness

Answer

To make it harder

Answer

To increase its melting point

Answer

To change its color

Question 5

In a belt-and-pulley system, what happens if the driven pulley is larger than the driving pulley?

Accepted Answer

The driven pulley rotates slower with more torque

Answer

The driven pulley rotates faster

Answer

Both pulleys rotate at the same speed

Answer

The belt will slip

Question 6

What does the term 'tolerance' mean in mechanical engineering?

Accepted Answer

The allowable variation in a dimension

Answer

The maximum load a part can handle

Answer

The strength of a material

Answer

The friction between two parts