Connection between hydraulic components is made using tubing and quick-coupling connectors. Connections should be

• made when the system is under pressure.

• removed when the system is under pressure.

• made and removed when the system is under pressure.

• made and removed when the system is not under pressure.

Hydraulic cylinders convert fluid flow into

• Linear motion

• Pressure

• rotational motion

• flow rate

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following hydraulics components is an actuator?

• Accumulator

• Cylinder

• Pump

• Pressure-relief valve

What is the main function of a shut-off valve?

• It prevents fluid flow in a hydraulic line.

• It allows the adjustment of pressure in a hydraulic line.

• It regulates the direction of fluid flow in a hydraulic line.

• It allows the adjustment of flow rate in a hydraulic line.

What is the main function of a directional control valve?

• It prevents the pressure from reaching a critical level.

• It allows the adjustment of pressure in a hydraulic line.

• It controls flow rate and/or flow direction

• It generates a force that can be applied to a load.

Which of the following statements is correct?

• Hydraulics enables precise positioning.

• Hydraulics enables the transmission of large forces using small components.

• Hydraulics enable start-up under heavy load

• All of the choices here

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following component is not a typical component of a hydraulic power unit?

• Pump

• Cylinder

• Filter

• Tank

Complete the following sentence: "In a hydraulic system, the main purpose of filters is to keep __________ of the hydraulic fluid at a permissible level."

• temperature

• fluidity

• contamination

• pressure

Pressure-relief valves are used to

• limit the minimum pressure in a system.

• control the flow rate in a system.

• limit the maximum pressure in a system

• control the pressure in a system

Which of the following statements is correct?

• Hydraulics is sensitive to environmental dirt

• Hydraulics is temperature-dependent.

• Hydraulics has a favorable efficiency factor

• All of the choices here are correct