MSSC Maintenance Awareness. | Exam Revision Questions And
Correct Answers | Graded A+ | 2025 Update |
Torches are designed to avoid mixing oxygen and acetylene by using __________. -
✔✔Reverseflow check valves at torch inlets or regulator outlets
To prevent leakage around the valve during use, __________ -✔✔An oxygen cylinder valve
should be opened all the way
An explosion can occur if __________ comes in contact with oil. -✔✔High pressure oxygen
A green welding hose normally indicates that this hose carries __________. -✔✔Oxygen
A __________ is a non-destructive test that uses a colored spray to reveal imperfections in a weld.
-
✔✔dye-penetrant test
A red welding hose indicates that this hose carries __________. -✔✔acetylene
When using the __________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. -✔✔pull technique
__________ 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. -✔✔Filler
Metals treated by __________ processes become soft. -✔✔annealing
Oxy-acetylene welding requires no __________ and is not sensitive to wind or drafts like Gas
Metallic Arc Welding or Gas Tungsten Arc Welding. -✔✔electricity
A magnaflux test is used to show what flaw in ferrous metal? -✔✔Cracks in the surface
A spot welding system consists of an electrical supply, moveable arm, and a(n) __________. -
✔✔stationary arm
What device should be stored a minimum of 20 feet from flammable materials? -✔✔Oxygen
Cylinders
The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it with
the
, base metal being welded. -✔✔Electricity
Circuit testers determine if __________ electricity is present. -✔✔AC
A knife switch consists of a lever and one or more sets of __________. -✔✔contacts
The component of an electrical circuit that gives the operator control is the __________. -
✔✔input device
The type of current that only flows in one direction is __________. -✔✔DC
Constant voltage power supplies will maintain a constant voltage under varying __________. -
✔✔loads
10mA would be an example of __________ value. -✔✔current
A(n) __________ is used to measure resistance. -✔✔ohmmeter
Voltage is a(an) electrical __________. -✔✔force
If a wire has continuity, it__________. -✔✔will have almost no resistance
Current in a __________ circuit is divided among the branches of the circuit. -✔✔parallel
As branches are added to a parallel circuit the resistance __________. -✔✔decreases
A multimeter is a multipurpose device that can measure _________. -✔✔voltage, current, and
resistance
In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is
__________. -✔✔equal to the power supply voltage
A(n) __________ circuit is one in which there is more than one path for current to travel. -
✔✔parallel
An ammeter is used to measure __________. -✔✔current
The two ways to measure voltage are __________ and __________. -✔✔across a component,
from a reference
Both analog and digital voltmeters measure __________. -✔✔potential difference
When current in a circuit is too high, it is usually the result of too many loads or a __________. -
✔✔short circuit
Correct Answers | Graded A+ | 2025 Update |
Torches are designed to avoid mixing oxygen and acetylene by using __________. -
✔✔Reverseflow check valves at torch inlets or regulator outlets
To prevent leakage around the valve during use, __________ -✔✔An oxygen cylinder valve
should be opened all the way
An explosion can occur if __________ comes in contact with oil. -✔✔High pressure oxygen
A green welding hose normally indicates that this hose carries __________. -✔✔Oxygen
A __________ is a non-destructive test that uses a colored spray to reveal imperfections in a weld.
-
✔✔dye-penetrant test
A red welding hose indicates that this hose carries __________. -✔✔acetylene
When using the __________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. -✔✔pull technique
__________ 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. -✔✔Filler
Metals treated by __________ processes become soft. -✔✔annealing
Oxy-acetylene welding requires no __________ and is not sensitive to wind or drafts like Gas
Metallic Arc Welding or Gas Tungsten Arc Welding. -✔✔electricity
A magnaflux test is used to show what flaw in ferrous metal? -✔✔Cracks in the surface
A spot welding system consists of an electrical supply, moveable arm, and a(n) __________. -
✔✔stationary arm
What device should be stored a minimum of 20 feet from flammable materials? -✔✔Oxygen
Cylinders
The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it with
the
, base metal being welded. -✔✔Electricity
Circuit testers determine if __________ electricity is present. -✔✔AC
A knife switch consists of a lever and one or more sets of __________. -✔✔contacts
The component of an electrical circuit that gives the operator control is the __________. -
✔✔input device
The type of current that only flows in one direction is __________. -✔✔DC
Constant voltage power supplies will maintain a constant voltage under varying __________. -
✔✔loads
10mA would be an example of __________ value. -✔✔current
A(n) __________ is used to measure resistance. -✔✔ohmmeter
Voltage is a(an) electrical __________. -✔✔force
If a wire has continuity, it__________. -✔✔will have almost no resistance
Current in a __________ circuit is divided among the branches of the circuit. -✔✔parallel
As branches are added to a parallel circuit the resistance __________. -✔✔decreases
A multimeter is a multipurpose device that can measure _________. -✔✔voltage, current, and
resistance
In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is
__________. -✔✔equal to the power supply voltage
A(n) __________ circuit is one in which there is more than one path for current to travel. -
✔✔parallel
An ammeter is used to measure __________. -✔✔current
The two ways to measure voltage are __________ and __________. -✔✔across a component,
from a reference
Both analog and digital voltmeters measure __________. -✔✔potential difference
When current in a circuit is too high, it is usually the result of too many loads or a __________. -
✔✔short circuit
