TPC 102 Flashcards
A schematic is made up of:
Symbols and Lines
Double line drawings that show the internal details of a pneumatic:
Cutaway drawings
In a dc circuit, the electrons flow from:
One direction only
Arrows are used on piping diagrams to indicate the:
Direction of flow
In a piping system, the alternate flow pattern is indicated by a:
Supplementary diagram
On an electrical diagram, a dashed line indicates:
Exposed wire
Vent lines and drain lines are shown on a hydraulic schematic by:
Dashed lines
If a schematic carries no legend, clues about it may be found in the parts list, drawings, and:
Engineer’s notes
What is the last step in troubleshooting an electrical circuit when using a schematic:
Examine the actual circuit
An electric circuit in which the current path goes from one load to the next is called a:
Series circuit
An electric circuit that allows each load to be turned on or off independently of the others is a __________ circuit.
Parallel circuit
A wiring diagram shows how the parts of a circuit are connected:
Externally
Wires labeled “L” on a schematic:
Carry power from the source
In the diagram shown below, the “FORWARD” button is marked:
FOR
The flow of material in a piping system is controlled and adjusted by:
Valves
Direction of flow in a piping system may be changed by an:
Elbow
What part of the piping system connects two pipes of different diameter:
Reducer
A valve is used to ___________ in a piping system:
Control the flow
A cock valve is used to:
Turn flow on or off quickly
A check valve:
Allows flow in only one direction
Both hydraulic and pneumatic systems:
Are fluid power systems
In a fluid power system, an _____________ reacts to the pressure of the fluid and does the work.
Actuator
The basic symbol for a valve shows its connections, flow paths, and:
Functions
Which element of a hydraulic braking system directs the flow of the brake fluid?
Valve
If the fluid of a hydraulic or pneumatic is used again and again is called a ___________ system.
Closed
In a refrigeration subsystem of an A/C and R system, what is another term for an evaporator:
Liquid Chiller
In an A/C & R system, thermostatic expansion valves and ADR valves are used on __________ control.
Direct
In a diagram for an electric control circuit, which of the following shows wiring to be installed at the site:
———- (Dashed lines)
What solid-state device in an A/C system can amplify and switch signals:
Transistor
Fusion welding means joining two materials by _________ them together.
Melting
The basic method of fusion welding that uses the “squeeze-and-heat” process is __________ welding.
Resistance
If the part is to be welded in the field, the weld symbol includes:
A Flag
Standard dimensions for a weld:
May appear in a legend on the welding diagram
