Mechanical Aptitude Hydraulics and Pneumatics Questions and Answers 2

Question 1

What is the main difference between hydraulic and pneumatic systems?

Accepted Answer

Hydraulic systems use liquid, pneumatic use gas

Answer

Hydraulic systems use gas, pneumatic use liquid

Answer

There is no difference

Answer

Pneumatic systems generate more force

Question 2

In a hydraulic system, if the input piston has an area of 2 cm² and the output piston has an area of 20 cm², what is the force multiplication factor?

Accepted Answer

10

Answer

2

Answer

5

Answer

20

Question 3

What component in a hydraulic system converts fluid pressure into linear mechanical motion?

Accepted Answer

Hydraulic cylinder

Answer

Hydraulic pump

Answer

Control valve

Answer

Accumulator

Question 4

What is the purpose of an accumulator in a hydraulic system?

Accepted Answer

To store pressurized fluid for later use

Answer

To filter the hydraulic fluid

Answer

To cool the hydraulic fluid

Answer

To increase pump speed

Question 5

Why is air typically dried before being used in a pneumatic system?

Accepted Answer

To prevent corrosion and freezing in the system

Answer

To increase its pressure

Answer

To make it flow faster

Answer

To reduce its temperature

Question 6

What type of hydraulic pump uses interlocking gears to move fluid?

Accepted Answer

Gear pump

Answer

Vane pump

Answer

Piston pump

Answer

Centrifugal pump