TPC SCHEMATIC AND SYMBOL
a cock valve is used to
turn flow on or off quickly
Which element of a hydraulic breaking system directs the flow of the brake fluid?
valve
The flow of the material in a piping system is controlled and adjusted by...
valves
What does the 2 represent when pipe and fitting sizes are indicated as follows? 3" x 4" x 2"
Size of branch line
What does the 2 represent when pipe and fitting sizes are indicated as follows? 3" x 4" x2"
Size of branch line
How is chamfering indicated in a welding symbol?
The symbol has the shape of the chamfer
T/F: All electrical or electronic components are identified on schematic diagrams by standards symbols.
True.
T/F: When components are connected in a series circuit, if one is removed or burns out, the entire series will fail.
True.
Short Circuit
Where two bare conductor wires touch or where a circuit is improperly wired, the electrical current "jumps" from one conductor to another at the point where there's the least resistance.
Which type of diagram emphasizes connections between elements rather than flow?
Wiring
Standard dimensions for a weld are...
included in symbol is not correct answer
which type of projection gives a three-dimensional view of a piping system?
isometric
On a refrigeration wiring diagram, the field-wiring terminals are identified by
letters
on regfrigeration wiring diagram, the field-wiring terminals are identified by
letters
In a refrigeration subsystem of an air condition and refrigeration system, what is another term for an evaporator?
liquid chiller
a device that uses is electricity is called a
load
A schematic diagram may be broken into local areas to
make circuits easier to understand
Standard dimensions for a weld...
may appear in a legend on the welding diagram
One disadvantage of a welded joint is that it
may form slag inside the pipe
"Fusion" welding means joining two materials by ______ them together
melting
welding is classified by the?
method of producing the heat
In a DC circuit, the electrons from from...
one direction only
when several wires follow the same path, they may be represented as a ___________ line on a wiring diagram.
one thick line may be used
both a fuse and circuit breaker
open a circuit when there is a current overload
An electric circuit that allows each load to be turned on or off independently of the other is a ______ circuit.
parallel
Electrical components can be connected either in series or in ______; both types connect several electrical components together.
parallel,
A single-line drawing that uses simple outlines to represent components is a __________ diagram.
pictorial
Wire labeled "L" on a schematic carries...
power from the source
a well prepared schematic begins with and returns to the
power source
The best starting point for tracing an electrical circuit is the
power supply
A thermistor's electrical resistance decreases as the
pressure increases
The pump in a hydraulic system
provides flow and pressure
The basic method of fusion welding that uses the "squeeze-and-heat" process is ______ welding.
resistance
on a refrigeration schematic, the following symbol indicates a switch that opens on rising pressure
rising pressure
which type of diagram shows how the circuit functions?
schematic
Electrical components can be connected either in ______ or in parallel; both types connect several electrical components together.
series
An electric circuit in which the current path goes from one load to the next is called a...
series circuit
Electrical components can be connected either in series or in parallel; both types connect ______ electrical components together.
several
which of the following is included in the five part definition of a schematic?
shows how a system works
A schematic is made up of...
symbols and lines
a schematic is made up of?
symbols and lines
On a hydraulic or pneumatic diagram, local areas are outlined by
symbols or pictograms
A thermistor's electrical resistance decreases as the
temperature increases
what solid-state device in an A/C system can amplify and switch electrical signals?
transistor
A cock valve is used to...
turn flow on or off quickly
Positive
+
unlike a dc circuit schematic, a schematic of an ac circuit will have no?
+ or - signs
Negative
-
In a piping system, an alternate flow pattern is indicated by a...
A supplementary diagram
In a fluid-power system, a(n) _________ reacts to the pressure of the fluid and does the work.
Actuator
If the fluid in a hydraulic or pneumatic system is used again and again it is called a(n) _________ system.
Closed
Series Circuit
Current has only one electrical path to follow.
Parallel Circuit
Current has two or more electrical paths to follow.
Double-line drawings that show the internal details of a pneumatic system are called
Cutaway drawings
In an A/C and R system, thermostatic expansion valves and ADR valves are used on _________ control.
Direct
Arrows are used on piping diagrams to indicate the
Direction of flow
The composite symbol displayed includes the symbol for a(n)
Electric motor
On an electrical diagram, a dashed line indicates a(n)
Exposed wire
A wiring diagram shows how the parts of a circuit are connected
Externally
T/F: When components are connected in a parallel circuit, if one is removed or burns out, the remaining components in the circuit will not continue to function.
False.
If the part is to be welded in the field, the weld symbol includes a(n)
Flag
Line 1
L1
Which element of a hydraulic system keeps a vacuum from forming when the liquid level drops?
Reservoir
The basic method of fusion welding that uses the "squeeze-and-heat" process is _________ welding.
Resistance
What does the displayed symbol represent?
Rotary compressor
An electric circuit in which the current path goes from one load to the next is called a _________ circuit.
Series
What are Schematic Diagrams?
Simplified drawings of electrical circuits that show all the electrical components of a circuit including the power source, conductors, loads, switches, resistors, and so on.
In a piping system, an alternate flow pattern is indicated by a
Supplementary diagram
both hydraulic and pneumatic systems
are fluid power systems
What solid state device in an A/C system can amplify and switch electrical signals?
Transistor
Vent lines and drain lines are shown on a hydraulic schematic by...
dashed lines
In an air conditioning and refrigeration system, thermostatic expansion valves and ADR valves are used on ______ control.
direct
Arrows are used on piping diagrams to indicate the...
direction of flow
When compared to a pictorial representation of a system, a schematic is
easier to keep up-to-date
Direction of flow in a piping system may be changed by a(n) ______.
elbow
direction of flow in a piping system may be changed by an
elbow
If a schematic carries no legend, clues about it may be found in the parts list, drawing title, and...
engineer's notes
if a schematic carries no legend, clues about it may be found in the parts list, drawing title, and?
engineer's notes
On an electrical diagram, a dashed line indicates a(n)...
exposed wire
Which of the lines shown below represent a drain line on a fluid power schematic?
-----------------
In a parallel series, the electrons flow from the negative battery terminal, ...
... branch out into two or more electrical paths, flow through all the components in the circuit, and return to the positive battery terminal.
In a series circuit, ....
...the current flows through each of the components, one after another, in a straight line, and remains the same through all of the series components.
In a parallel circuit, the current has...
...two or more electrical paths to follow.
A check valve ...
Allows flow in only one direction
Which kind of valve can be used to regulate the flow of fluid?
Globe
Which type of projection gives a three-dimensional view of a piping system?
Isometric
Line 2
L2
Line 3
L3
In the symbol below, which element designates the welding finish?
M
"Fusion" welding means joining two materials by __________ them together
Melting
Neutral
N
On a schematic drawing, a D shape is used to represent all of the following except a(n)
a D shape is typically used to represent a directional control valve. It is a common symbol used in hydraulic and pneumatic systems to indicate the flow direction of fluid or gas. However, a D shape is not typically used to represent a resistor. Resistors are usually represented by a zigzag line or a rectangular shape with a label indicating the resistance value.
What part of a piping system connects two pipes of different diameters?
a reducer
In a fluid-power system, a(n) ______ reacts to the pressure of the fluid and does the work.
actuator
Both hydraulic and pneumatic systems ...
are fluid-powered systems
A composite symbol is created by combining __________ symbols into a single symbol
basic
a composite symbol is created by combining________ symbols into a single symbol?
basic
Wires labeled " L " on a schematic?
carry power from the source
If a fluid in a hydraulic or pneumatic system is used again and again it is called a(n) ______ system.
closed
A valve is used to ______ in a piping system.
control the flow
Double-line drawings that show the internal details of a pneumatic system are called...
cutaway drawings
What is the last step in troubleshooting an electrical circuit when using a schematic?
examine the actual circuit
what is the last step in troubleshooting and electrical circuit when using a schematic?
examine the actual circuit
A wiring diagram show how the parts of a circuit are connected ...
externally
a wiring diagram shows how the parts of a circuit are connected?
externally
Which of the following weld types does not require chamfering?
fillet
If the part is to be welded in the field, the weld symbol includes a(n)...
flag
The basic symbol for a valve shows its connection, flow paths, and ...
functions
The symbol below represents a __________ accumulator.
gas-charged
