Ramsay Test Ramsay Hydraulics & Pneumatics 2

Question 1

What is the main cleanliness advantage of pneumatic systems over hydraulic systems?

Accepted Answer

No risk of fluid leaks or oil contamination

Answer

Pneumatic systems use compressed air, eliminating the risk of oil leaks and fluid contamination that are common concerns in hydraulic systems.

Question 2

In a pneumatic system, what is the purpose of an air dryer?

Accepted Answer

To remove moisture from compressed air

Answer

An air dryer removes moisture from compressed air to prevent corrosion, valve damage, and freeze-up in cold conditions.

Question 3

What unit is most commonly used to measure pneumatic pressure in the United States?

Accepted Answer

PSI (pounds per square inch)

Answer

In the US, pneumatic pressure is commonly expressed in PSI (pounds per square inch), representing force per unit area.

Question 4

Which component in a pneumatic circuit regulates airflow to control actuator speed?

Accepted Answer

Flow control valve

Answer

A flow control valve restricts the volume of air per unit time passing through the circuit, directly controlling actuator speed.

Question 5

What does the acronym FRL stand for in pneumatic conditioning units?

Accepted Answer

Filter, Regulator, and Lubricator

Answer

An FRL unit combines a Filter (removes contaminants), Regulator (sets working pressure), and Lubricator (adds oil mist) in one assembly.

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