Pressurized reservoirs that provide fluid to hydraulic equipment circuits are called

A. pneumatic pools

B. Accumulators

C. Output Actuators

D. Confined Pistons

Accumulators

Explanation:

An accumulator is a storage chamber in which a hydraulic fluid is stored under high pressure. Accumulators are the most common examples of energy storing device. It enables smooth movement, increases the efficiency of the hydraulic system and also stores energy during phases with lower demands.

External pressure is applied on the hydraulic fluid through mechanical devices such as an engine, piston movement, springs or through gasses compressed under high pressure. Hydro-pneumatic accumulators or compressed gas type are the most common type of accumulators found nowadays.