FCTC FCTC Mechanical Reasoning Principles Questions and Answers 2

Question 1

A gear with 20 teeth meshes with a gear with 40 teeth. If the smaller gear rotates at 100 RPM, what is the speed of the larger gear?

Accepted Answer

50 RPM

Answer

25 RPM

Answer

200 RPM

Answer

400 RPM

Question 2

Which type of lever has the fulcrum located between the effort and the load?

Accepted Answer

First-class lever

Answer

Second-class lever

Answer

Third-class lever

Answer

Compound lever

Question 3

A pipe with a diameter of 4 inches narrows to a diameter of 2 inches. How does the fluid velocity change?

Accepted Answer

It quadruples

Answer

It decreases by half

Answer

It stays the same

Answer

It doubles

Question 4

A 200-lb load is placed on one end of a lever 10 feet long. If the fulcrum is 2 feet from the load, how much effort is needed at the other end to balance it?

Accepted Answer

50 lb

Answer

40 lb

Answer

100 lb

Answer

160 lb

Question 5

Which simple machine consists of a grooved wheel with a rope or cable running along its groove?

Accepted Answer

Pulley

Answer

Wedge

Answer

Inclined plane

Answer

Screw

Question 6

If you push a 50-lb box up a frictionless inclined plane 10 feet long that rises 2 feet, what force is required?

Accepted Answer

10 lb

Answer

5 lb

Answer

25 lb

Answer

50 lb