Aux 2 Unit 2 Quiz 2

Aux 2 Unit 3 Q1

1 / 10

What happens to the hydraulic fluid after it leaves the actuator?

D) It evaporates

B) It returns to the reservoir for reuse

A) It is released into the environment

C) It stays in the actuator

2 / 10

What is the function of a directional control valve in a hydraulic system?

A) To filter contaminants from the fluid

C) To direct the flow of hydraulic fluid to various components

D) To maintain a constant temperature in the system

B) To regulate the speed of fluid flow

3 / 10

What type of fluid is typically used in hydraulic systems?

C) Gaseous carbon dioxide

A) Water with high salt content

D) Compressed air

B) Special hydraulic oil or synthetic fluid

4 / 10

Why is hydraulic oil preferred over water in hydraulic systems?

A) Water is too expensive

C) Water evaporates quickly under pressure

B) Hydraulic oil provides better lubrication and is less compressible

D) Water cannot be pressurized

5 / 10

What is the fundamental operating principle of a hydraulic system?

A) It converts electrical energy into sound energy

B) It uses fluid under pressure to transmit and amplify force

C) It converts chemical energy into thermal energy

D) It operates solely using air as the working medium

6 / 10

What role does the pump play in a hydraulic system?

D) It stores the fluid for later use

C) It converts mechanical energy into electrical energy

A) It cools down the hydraulic fluid

B) It generates pressure to move the fluid through the system

7 / 10

What type of actuator is used for linear motion in a hydraulic system?

D) Centrifugal pump

A) Hydraulic motor

B) Hydraulic cylinder

C) Gear pump

8 / 10

Which of the following is NOT a main component of a hydraulic system?

C) Battery

D) Reservoir

A) Pump

B) Actuator

9 / 10

What is the primary function of an actuator in a hydraulic system?

B) To convert hydraulic energy into mechanical energy

A) To store hydraulic fluid

C) To mix the fluid with additives

D) To cool the system

10 / 10

How does a pressure relief valve protect a hydraulic system?

A) It increases the fluid temperature

C) It diverts fluid to the actuator when the pressure is too low

B) It limits the maximum pressure to prevent damage

D) It serves as the main source of power

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