Reading Schematics and Symbols

Question 1

A schematic is made up of

Answer 1

symbols and lines

Question 2

Doubie line drawings that show the internal details of a pneumatic system are called

Answer 2

Cutaway drawings

Question 3

In a DC circuit the elections flow from

Answer 3

One direction only

Question 4

Arrows are used on piping diagrams to indicate the

Answer 4

Direction of flow

Question 5

In a piping system, an alternate flow pattern is indicated by a

Answer 5

Supplementary diagram

Question 6

On an electrical diagram, a dashed line indicates a(n)

Answer 6

Exposed wire

Question 7

Vent lines and drain lines are shown on a hydraulic schematic by

Answer 7

Dashed lines

Question 8

If a schematic carries no legend, clues about it may be found in the parts list, drawing titles or

Answer 8

Engineers notes

Question 9

The symbol represents

Answer 9

Gauge (circle with arrow)

Question 10

Whats the last step in troubleshooting, an electrical circuit when using a schematic?

Answer 10

Examine the actual circuit

Question 11

Which displayed electrical symbol represents connecting wires?

Answer 11

Lines with a dot connecting

Question 12

Which displayed electical symbol represents an SPDT switch?

Question 13

Which dsplayed electrical symbol represents a transformer?

Answer 13

(3s facing each other)

Question 14

Which displayed elechical symbol represents a fuse?

Answer 14

(Rectangle with lines)

Question 15

Which displayed electical symbol shows NC contacts?

Answer 15

Normally closed ≠

Question 16

An electric circuit in which the current path goes from one load to the next is caled

Answer 16

Series

Question 17

An electric circuit that allows each load to be turned on or off independently of the others

Answer 17

Parallel circuit

Question 18

A wiring diagram shows how the parts of a circuit are connected

Answer 18

Externally

Question 19

Wires labeled L on a schematic

Answer 19

Carry power from the source

Question 20

In the displayed diagram the FORWARD- button is marked

Answer 20

(Not F in the circle)

Question 21

The flow of material in a piping system is controlled and adjusted by

Answer 21

Valves

Question 22

Which displayed symbol represents a flanged joint?

Answer 22

(Line with 2 perpendicular lines)

Question 23

Direction of flow in a piping system may be changed by a(n)

Answer 23

Elbow

Question 24

What part of a piping system connects two pipes of different diameters?

Answer 24

Reducer

Question 25

Which displayed symbol represents a screwed tee fitting?

Answer 25

(Upside down T with single lines on each side)

Question 26

A valve is used to _____ in piping systems

Answer 26

Control the flow

Question 27

A cock valve is used to

Answer 27

Turn flow on or off quickly

Question 28

Winch displayed symbol represents a globe vale?

Answer 28

(Bow tie circle shaded in)

Question 29

A check valve

Answer 29

Allows flow only in one direction

Question 30

In the symbol displayed, the 2 in. dimension is indicaled by the letter 3 in. X 4 in. X 2 in.

Answer 30

C

Question 31

Both hydraulic and pneumatic systems

Answer 31

Are fluid power systems

Question 32

In a fluid power system an ____ reacts to the pressure of the fluid and does

Answer 32

Actuator

Question 33

The displayed symbol represents a _____ in a ______

Answer 33

Receiver; pneumatic (Sideways oval)

Question 34

The basic symbol or a valve shows its connectons, flow paths, and

Answer 34

Functions

Question 35

Winch displayed symbol represents a valve in the closed postion?

Answer 35

Closed DCV

Question 36

The composite symbol displayed includes the symbol for a(n)

Answer 36

Electric motor (M in circle)

Question 36

Which element of a hydraulic braking system directs the flow of the brake fluid?

Answer 36

Valve

Question 37

If the fluid in a hydraulic or pneumatic system is used again and again it is called a(n) ____ system

Answer 37

Closed

Question 38

On a hydraulic or pneumatic diagram, local areas are outined by which of the

Answer 38

_____ _ _ ______ _ _

Question 39

Which of the symbols below indicates a solenoid operalad device?

Answer 39

Solenoid pic

Question 40

In a refrigeration subsystem of an AC and R system, what is another term for an e….

Answer 40

Liquid chiller

Question 41

What does the displayed symbol represent?

Answer 41

Rotary compressor (Circle with rectangle on top)

Question 42

In an AC and R system, thermostatic expansion values and ADR Valves are used for ____ control

Answer 42

Direct

Question 43

In a diagram for an electric control circuit, which of the following shows wiring to be …. the site

Answer 43

___ ____ ____ ____

Question 44

What solid state device in an A/C system can amplify and switch electrical signals?

Answer 44

Transistor

Question 45

"Fusion” welding means joining two materials by _____ then together

Answer 45

Melting

Question 46

The basic method of fusion welding that uses the “squeeze-and-heat” process is ____ welding

Answer 46

Resistance

Question 47

Which of the following is a symbol for a weld with chamfering?

Answer 47

Sideways V

Question 48

If the part is to be welded in the field, the weld symbol includes a

Answer 48

Flag

Question 49

Standard dimensons for a weld

Answer 49

may appear in a legend on the welding diagram