Hydraulic Systems

A hydraulics fluid flow control circuit, controlling linear actuator speed, with the pump operation below maximum operating pressure, is known as the _____.

bleed-off circuit

A hydraulic fluid flow control circuit, controlling linear actuator speed during extension, with the pump operating at system pressure, is known as a_____.

metered-in circuit

A hydraulic fluid flow control circuit, used to control linear actuator speed during retraction, with the pump operating at above maximum pressure, is known as a_____.

metered-out circuit

Pressure in an operating hydraulic system is developed_____.

by resistance to the fluid flow through the system

The pressure of an operating hydraulic system, as indicated by a pressure gauge, is a result of the fluid flow overcoming_____.

internal resistance to flow

resistance of the internal components

the load applied to the system

Hydraulic systems typically operated for intermittent service do not require the use of oil coolers and would include all of the following except a____.

constant tension mooring winch system

A fluid power system is considered to be fail-safe if a component failure will result in a_____.

slow and controlled release of the loading so as not to endanger personal

A cluid power system shall be so designed_____.

that proper functioning of any unit shall not be affected by the back pressure in the system