Mechanical Aptitude FREE Mechanical Aptitude Knowledge Question and Answers 3

Question 1

A class 2 lever has the load positioned between the fulcrum and the effort. Which of the following is an example?

Accepted Answer

A wheelbarrow

Answer

A seesaw

Answer

A pair of tweezers

Answer

A fishing rod

Question 2

Two meshing gears have 20 and 60 teeth respectively. If the smaller gear rotates at 300 RPM, what is the speed of the larger gear?

Accepted Answer

100 RPM

Answer

150 RPM

Answer

300 RPM

Answer

900 RPM

Question 3

Which material property describes its ability to return to its original shape after a load is removed?

Accepted Answer

Elasticity

Answer

Ductility

Answer

Hardness

Answer

Brittleness

Question 4

A 150-pound person stands exactly in the center of a 10-foot beam supported at both ends. What is the reaction force at each support?

Accepted Answer

75 pounds

Answer

50 pounds

Answer

100 pounds

Answer

150 pounds

Question 5

What happens to the pressure in a closed container of gas if the temperature is doubled while the volume remains constant?

Accepted Answer

Pressure doubles

Answer

Pressure is halved

Answer

Pressure stays the same

Answer

Pressure quadruples

Question 6

An inclined plane is 12 feet long and raises a load 3 feet high. What is its mechanical advantage?

Accepted Answer

4

Answer

2

Answer

3

Answer

6