Mechanical Aptitude FREE Mechanical Aptitude Knowledge Question and Answers 2

Question 1

A worker needs to lift a 200-pound load using a single fixed pulley. How much force must the worker apply to the rope?

Accepted Answer

200 pounds

Answer

100 pounds

Answer

400 pounds

Answer

50 pounds

Question 2

Which type of gear arrangement is used to transmit motion between two shafts that are perpendicular to each other?

Accepted Answer

Bevel gears

Answer

Spur gears

Answer

Worm gears

Answer

Helical gears

Question 3

If a hydraulic system has an input piston area of 2 square inches and an output piston area of 10 square inches, what is the mechanical advantage?

Accepted Answer

5

Answer

2

Answer

10

Answer

20

Question 4

A spring with a spring constant of 50 N/m is compressed 0.2 meters. What force does the spring exert?

Accepted Answer

10 N

Answer

5 N

Answer

25 N

Answer

100 N

Question 5

In a belt-and-pulley system, the driver pulley has a diameter of 8 inches and the driven pulley has a diameter of 4 inches. If the driver turns at 100 RPM, how fast does the driven pulley rotate?

Accepted Answer

200 RPM

Answer

50 RPM

Answer

100 RPM

Answer

400 RPM

Question 6

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

Accepted Answer

To store rotational energy and smooth out fluctuations in speed

Answer

To increase the speed of rotation

Answer

To reverse the direction of rotation

Answer

To reduce friction between moving parts