Chapter 1

Question 1

Hydraulics

Answer 1

Hydra means water, uses water or oil

Question 2

Pneumatics

Answer 2

Pneu means air, uses air

Question 3

Work

Answer 3

Work= force x distance
Unit= Nm or ftlb

Question 4

ANSI

Answer 4

American national standard institute

Question 5

1 ton

Answer 5

=2000 lbs

Question 6

Pascal’s law

Answer 6

Pressure is distributed equally in all directions in a non flowing system

Question 7

Actuators

Answer 7

Something that does work, ex: double acting cylinders

Question 8

Ports

Answer 8

There are two ports on the double acting cylinder, they are where fluid enters and exits

Question 9

Blind end side

Answer 9

The left hand side, has the most area, the diameter of the blind end side is called a bore

Question 10

Effective area

Answer 10

Area of the blind end side minus the area of the rod end side

Question 11

Extension/retraction

Answer 11

E - fluid comes in through blind and exits through rod

R - fluid comes in through rod and exists through blind

Question 12

Dead heading

Answer 12

When cylinder is fully extended or fully retracted

Question 13

3 types of valves

Answer 13

Directional, flow control, and pressure control

Question 14

Relief valve

Answer 14

• Is a pressure control valve, pilot line allows pressure to enter with no flow
• protects the circuit, keeps the pressure down

Question 15

Suction hose velocity recommended

Answer 15

2 ft/s

Question 16

Pressure line velocity recommended

Answer 16

15 ft/s

Question 17

Sizing of conductors

Answer 17

• hoses, piping, & tubing

- laminar flow is desired

Question 18

Force and torque

Answer 18

Pressure determine force and torque

Question 19

Velocity and RPM

Answer 19

GPM determines velocity and RPM

Question 20

fluid power circuit

Answer 20

has three features: conversion from mechanical to fluid energy, delivery, and conversion from fluid back to mechanical energy

Question 21

pump

Answer 21

develops flow of fluid through the circuit

Question 22

directional control valve

Answer 22

directs the flow of fluid based on its position

Question 23

cylinder

Answer 23

linear actuator, converts hydraulic energy into a force acting over some distance

Question 24

advantages of fluid power

Answer 24

high power density, control, and not damaged when overloaded