Metals treated by _____ processes become soft.
Annealing
Quenching
Stamping
Twisting
Annealing
A spot-welding system consists of an electrical
... [Show More] supply, moveable arm, and a _________.
Encoder
Filler rod
Stationary arm
Stationary roller
Stationary arm
Oxy-acetylene welding requires no _____ and is not sensitive to wind or drafts like Gas Metallic Arc Welding or Gas Tungsten Arc Welding.
Gas
Torch
Electricity
Filler rod
Electricity
Metals that contain iron, such as steel are called _______ metals.
Ferrous
Soft
Base
Heavy
Ferrous
The gas metal arc welding (GMAW) process uses _____ to melt metal wire and fuse it with the base metal being welding.
Electricity
Oxygen
Acetylene
Tungsten
Electricity
Metals that contain iron, such as mild steel, are called _______ metals.
Soft
Heavy
Base
Ferrous
Ferrous
Metals that contain iron, such as steel, have ______ properties.
Porous
Magnetic
Spongy
Kinetic
Magnetic
________ metal is a metal similar in composition to the metal being joined it strengthens the weld by filling the gap created between the two pieces of metal during welding.
Joiner
Filler
Wadding
Lap
Filler
A red welding hose indicates that this hose carries _______.
Oxygen
Acetylene
Argon
Nitrogen
Acetylene
A green welding hose normally indicates that this hose carries ____.
Acetylene
Oxygen
Helium
Nitrogen
Oxygen
The maximum pressure for use of acetylene gas is ____ psi.
30
25
20
15
15
A _______ is a non-destructive test that uses a colored spray to reveal imperfections in a weld.
Dye-penetrant test
Magnaflux test
Bend test
X-ray test
Dye-penetrant test
When using the ____ in welding, the electrode should be leaned 15 to 25 degrees in the direction of travel.
Push technique
Pull technique
Spot technique
Stringer technique
Pull technique
What device should be stored a minimum of 20 feet from flammable materials?
Nitrogen Cylinders
Micrometers
Machine Tools
Oxygen Cylinders
Oxygen Cylinders
A magnaflux test is used to show what flaw in ferrous metal?
Flatness
Hardness
Cracks in the surface
Magnetism
Cracks in the surface
Dirt and other foreign material should be cleaned out of an oxygen cylinder before installing a regulator. By what method should this be done?
The cylinder should be wiped out with a rag
The cylinder valve should be cracked open slightly and then close completely
Using a pneumatic air gun
Using a wire brush
The cylinder valve should be cracked open slightly and then close completely.
To prevent leakage around the valve during use, _____.
Acetylene pressure should be equalized
A full flow of oxygen should be established
An oxygen cylinder valve should be opened all the way
Reduce condensation in the regulator
An oxygen cylinder valve should be opened all the way
An explosion can occur if ______ comes in contact with oil.
High pressure oxygen
High pressure nitrogen
High speed shaft
High speed pump
High pressure oxygen
Torches are designed to avoid mixing oxygen and acetylene by using ____.
Reverse-flow check valve at torch inlets or regulator outlets
Separate valves
Lower oxygen pressure
Torch anti-mixing valve
Reverse-flow check valve at torch inlets or regulator outlets
Electricity creates the flow of _____ in a conductor.
Protons
Neutrons
Electrons
Photons
Electrons
The type of current that only flows in one direction is ____.
AC
DC
CA
PC
DC
Circuit testers determine if ______ electricity is present.
AC
DC
PC
RF
AC
The component of an electrical circuit that gives the operator control is the ______.
Conductor
Power supply
Output device
Input device
Input device
Constant voltage power supplies will maintain a constant voltage under varying ______.
Loads
Weather conditions
Levels of light
Chemical reactions
Loads
Which of the following is true of an electrical schematic diagram?
Represents components with standard symbols.
Shows how the components are interconnected
Is helpful in troubleshooting a circuit
All of the above
All of the above
The primary purpose of a switch is to ______.
Control current values
Reduce voltage levels
Energize and deenergize circuits
Act as output devices
Energize and deenergize circuits
The contacts of which switch type are open when acted on by the operator?
Normally closed
Normally activated
Normally open
Normally simulated
Normally closed
Which of the following is often used to start or stop machine operation?
Pushbutton switch
Selector switch
Knife switch
None of the above
Pushbotton switch
A knife switch consists of a lever and one or more set of _______.
Conductors
Operators
Knives
Contacts
Contacts
Which of the following is an electrical output device?
Motor
Lamp
Resistor
All of the above
All of the above
Rotary motion is the output of which electrical output device?
Buzzer
Resistor
Motor
Solenoid
Motor
A resistor is made of a material that will or will not allow current to easily flow through it.
Will not
A ____ ____ operator consists of a hinged contact bar that is connected to one contact terminal.
knife switch
What are the two main components of a manual switch?
Operator
Contacts
_____ are the material through which the current flows in a circuit.
Conductors
A circuit tester is used to test a wall outlet for the presence of ____ electricity.
AC
What are the four basic components of an electrical circuit?
Power supply, Input devices, output devices and conductors
A flow of electrons is called _____.
current
What are three types of manual switch operators?
Knife Switch Operators, Pushbutton Switch Operators and Selector Switch Operators
Normally open contacts are open when the switch's operator is ____ _____.
not activated
Normally closed contacts are closed when the switch's operator is ____ _____.
not activated
Both analog and digital voltmeters measure _____.
Electrical flow
Potential resistance
Potential difference
Power
Potential difference
Voltage is an electrical ___.
Flow
Force
Opposition
Unit
Force
A multimeter is a multipurpose device that can measure ___.
Voltage and resistance
Voltage and current
Resistance and current
Voltage, current and resistance
Voltage, current and resistance
The two ways to measure voltage are ____ and ____.
In series, in parallel
Additive, subtractive
High points, low points
Across a component, from a reference
Across a component, from a reference
In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is___.
Equal to the power supply voltage
More than the power supply voltage
Less that the power supply voltage
More or less, depending on the load of each branch
Equal to the power supply voltage
A(n) _________ circuit is one in which there is more than one path for current to travel.
Open
Series
Paralled
closed
Paralled
To measure current through a component, the ammeter must be connected ________ the component.
Across
in parallel with
in series with
without
in series with
Current in a ___ circuit is divided among the branches of the circuit.
Series
Parallel
Open
Short
Parallel
10mA would be an example of _______ value.
Current
Voltage
Resistance
Wattage
Current [Show Less]