pm 11

11.1.1. A piston rod retracts when hydraulic oil flows to the cap end.

• true

• false

11.3.3. A(n) _____ is a certain arrangement that the spool of a directional-control valve can move into.

11.1.2. In a hydraulic jack, a large amount of pressure is used to create a large force.

• true

• false

11.1.3. If area is constant, force increases as pressure increases.

• true

• false

11.1.1. A fluid pressure of 500 psi is exerted on a cylinder piston with and an area of 20 sq in. to produce _____ lb of force.

• 1000

• 5000

• 10000

• 50000

11.1.2. _____ states that energy can be neither created nor destroyed but can be changed from one form to another.

• boyles law

• newtons first law of motion

• newtons third law of motion

• the law of conservation of energy

11.1.3. A(n) _____ is a device that accepts a control signal and causes a mechanical motion.

• actuator

• pump

• piston

• DCV

11.1.1. A(n) _____ system is a fluid power system that transmits energy in an enclosed space using a liquid (hydraulic oil) under pressure.

11.1.2. A(n) _____ is a container for storing fluid under little or no pressure.

11.1.3. All hydraulic systems consist of a(n) _____, pathways, and one or more loads.