Hydraulic Lab 1 -5 Review

What is the main function of a directional control valve?

• It prevents the pressure from reaching a critical level

• It allows adjustment of pressure in a hydraulic line

• Its controls flow rate and/or flow direction

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

Hydraulic cylinders are actuators that convert the energy of a pressurized fluid into:

• Flow rate

• Pressure

• Motion

Which of the following components are devices for measuring fluid pressure:

• Pressure Gauges

• Flowmeters

• Power Units

Which of the following types of pump is most commonly used in hydraulics?

• Screw Pump

• Plunger Pump

• Gear Pump

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.

“In a hydraulic system, the main purpose of filters is to keep _________________ of the hydraulic fluid at a permissible level.”

• Temperature

• Contamination

• Pressure

Which component is used to measure flow rate in a hydraulic circuit?

• Flowmeter

• Pressure Gauge

• Flow Control Valve

What happens when the resistance to fluid flow in a circuit increases?

• The pressure builds up.

• The pressure decreases.

• The flow rate increases.