MSSC - Maintenance Awareness| 150 QUESTIONS|
GRADED A
Torches are designed to avoid mixing oxygen and acetylene by using __________. Correct
Answer: Reverse-flow check valves at torch inlets or regulator outlets
To prevent leakage around the valve during use, __________ Correct Answer: An oxygen
cylinder valve should be opened all the way
An explosion can occur if __________ comes in contact with oil. Correct Answer: High
pressure oxygen
A green welding hose normally indicates that this hose carries __________. Correct Answer:
Oxygen
A __________ is a non-destructive test that uses a colored spray to reveal imperfections in a
weld. Correct Answer: dye-penetrant test
A red welding hose indicates that this hose carries __________. Correct Answer: acetylene
When using the __________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. Correct Answer: 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. Correct Answer:
Filler
Metals treated by __________ processes become soft. Correct Answer: annealing
Oxy-acetylene welding requires no __________ and is not sensitive to wind or drafts like Gas
Metallic Arc Welding or Gas Tungsten Arc Welding. Correct Answer: electricity
A magnaflux test is used to show what flaw in ferrous metal? Correct Answer: Cracks in the
surface
A spot welding system consists of an electrical supply, moveable arm, and a(n) __________.
Correct Answer: stationary arm
What device should be stored a minimum of 20 feet from flammable materials? Correct Answer:
Oxygen Cylinders
The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it
with the base metal being welded. Correct Answer: Electricity
Circuit testers determine if __________ electricity is present. Correct Answer: AC
, A knife switch consists of a lever and one or more sets of __________. Correct Answer:
contacts
The component of an electrical circuit that gives the operator control is the __________. Correct
Answer: input device
The type of current that only flows in one direction is __________. Correct Answer: DC
Constant voltage power supplies will maintain a constant voltage under varying __________.
Correct Answer: loads
10mA would be an example of __________ value. Correct Answer: current
A(n) __________ is used to measure resistance. Correct Answer: ohmmeter
Voltage is a(an) electrical __________. Correct Answer: force
If a wire has continuity, it__________. Correct Answer: will have almost no resistance
Current in a __________ circuit is divided among the branches of the circuit. Correct Answer:
parallel
As branches are added to a parallel circuit the resistance __________. Correct Answer:
decreases
A multimeter is a multipurpose device that can measure _________. Correct Answer: voltage,
current, and resistance
In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is
__________. Correct Answer: equal to the power supply voltage
A(n) __________ circuit is one in which there is more than one path for current to travel. Correct
Answer: parallel
An ammeter is used to measure __________. Correct Answer: current
The two ways to measure voltage are __________ and __________. Correct Answer: across a
component, from a reference
Both analog and digital voltmeters measure __________. Correct Answer: potential difference
When current in a circuit is too high, it is usually the result of too many loads or a __________.
Correct Answer: short circuit
GRADED A
Torches are designed to avoid mixing oxygen and acetylene by using __________. Correct
Answer: Reverse-flow check valves at torch inlets or regulator outlets
To prevent leakage around the valve during use, __________ Correct Answer: An oxygen
cylinder valve should be opened all the way
An explosion can occur if __________ comes in contact with oil. Correct Answer: High
pressure oxygen
A green welding hose normally indicates that this hose carries __________. Correct Answer:
Oxygen
A __________ is a non-destructive test that uses a colored spray to reveal imperfections in a
weld. Correct Answer: dye-penetrant test
A red welding hose indicates that this hose carries __________. Correct Answer: acetylene
When using the __________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. Correct Answer: 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. Correct Answer:
Filler
Metals treated by __________ processes become soft. Correct Answer: annealing
Oxy-acetylene welding requires no __________ and is not sensitive to wind or drafts like Gas
Metallic Arc Welding or Gas Tungsten Arc Welding. Correct Answer: electricity
A magnaflux test is used to show what flaw in ferrous metal? Correct Answer: Cracks in the
surface
A spot welding system consists of an electrical supply, moveable arm, and a(n) __________.
Correct Answer: stationary arm
What device should be stored a minimum of 20 feet from flammable materials? Correct Answer:
Oxygen Cylinders
The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it
with the base metal being welded. Correct Answer: Electricity
Circuit testers determine if __________ electricity is present. Correct Answer: AC
, A knife switch consists of a lever and one or more sets of __________. Correct Answer:
contacts
The component of an electrical circuit that gives the operator control is the __________. Correct
Answer: input device
The type of current that only flows in one direction is __________. Correct Answer: DC
Constant voltage power supplies will maintain a constant voltage under varying __________.
Correct Answer: loads
10mA would be an example of __________ value. Correct Answer: current
A(n) __________ is used to measure resistance. Correct Answer: ohmmeter
Voltage is a(an) electrical __________. Correct Answer: force
If a wire has continuity, it__________. Correct Answer: will have almost no resistance
Current in a __________ circuit is divided among the branches of the circuit. Correct Answer:
parallel
As branches are added to a parallel circuit the resistance __________. Correct Answer:
decreases
A multimeter is a multipurpose device that can measure _________. Correct Answer: voltage,
current, and resistance
In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is
__________. Correct Answer: equal to the power supply voltage
A(n) __________ circuit is one in which there is more than one path for current to travel. Correct
Answer: parallel
An ammeter is used to measure __________. Correct Answer: current
The two ways to measure voltage are __________ and __________. Correct Answer: across a
component, from a reference
Both analog and digital voltmeters measure __________. Correct Answer: potential difference
When current in a circuit is too high, it is usually the result of too many loads or a __________.
Correct Answer: short circuit
