MSSC - MAINTENANCE AWARENESS EXAM WITH
QUESTIONS AND VERIFIED ANSWERS
Torches use __________ to prevent oxygen and acetylene from mixing. - Answer:
Reverse-flow check valves at torch inlets or regulator outlets.
To prevent leaking around the valve during use, __________ - ANSWER An
oxygen cylinder valve should be fully open.
When __________ comes into contact with oil, it can cause an explosion. -
ANSWER: High-pressure oxygen.
A green welding hose typically signifies that it carries _________. - ANSWER:
oxygen.
A __________ is a non-destructive test that employs a colored spray to highlight
flaws in a weld. - ANSWER dye penetration test
A red welding hose shows that it transports _________. - Answer: acetylene.
When welding with the __________, lean the electrode 15 to 25 degrees in the
direction of movement. - ANSWER Pull method
__________ metal is a metal with a similar composition to the one being bonded. It
reinforces the weld by filling the space formed between the two pieces of metal
while welding. - Answer filler
Metals treated with __________ procedures soften. - Answer: annealing.
,Oxy-acetylene welding requires no __________ and is not affected by wind or
drafts like Gas Metallic Arc Welding or Gas Tungsten Arc Welding. - Answer:
electricity.
What fault does a magnaflux test reveal in ferrous metal? - ANSWER Cracks in the
surface
A spot welding system has an electrical supply, a movable arm, and a(n)
__________. - ANSWER: stationary arm.
What device should be kept at least 20 feet away from flammable materials? -
Answer: Oxygen cylinders.
The gas metal arc welding (GMAW) procedure melts the metal wire and fuses it to
the base metal being welded. - ANSWER Electricity
Circuit testers determine whether or not electricity is present. - ANSWER AC
A knife switch is made up of a lever and one or more sets of _________. -
ANSWER contacts
The __________ is an electrical circuit component that allows the operator to
operate the system. - ANSWER input device.
The current that only runs in one direction is __________. - Answer DC
consistent voltage power supplies keep a consistent voltage under different
conditions. - ANSWER loads.
10mA is an example of a _________ value. - ANSWER current
, Resistance is measured using the A(n) __________. - ANSWER Ohmmeter.
Voltage is an electrical _________. ANSWER force
If a wire is continuous, it_________. - ANSWER will face almost no resistance
A circuit's current is distributed among its branches. - Answer in parallel
The resistance of a parallel circuit increases as more branches are added. -
ANSWER decreases
A multimeter is a versatile tool that can measure _________. - ANSWER Voltage,
Current, and Resistance
In a parallel circuit powered by a constant voltage supply, the voltage drop across
each branch is __________. - ANSWER equals the power supply voltage.
A(n) __________ circuit contains more than one way for current to travel. -
Answer in parallel
An ammeter measures __________. - ANSWER current
There are two methods for measuring voltage: __________ and __________. -
ANSWER across a component, using a reference
Both analog and digital voltmeters measure __________. - ANSWER Potential
Difference
QUESTIONS AND VERIFIED ANSWERS
Torches use __________ to prevent oxygen and acetylene from mixing. - Answer:
Reverse-flow check valves at torch inlets or regulator outlets.
To prevent leaking around the valve during use, __________ - ANSWER An
oxygen cylinder valve should be fully open.
When __________ comes into contact with oil, it can cause an explosion. -
ANSWER: High-pressure oxygen.
A green welding hose typically signifies that it carries _________. - ANSWER:
oxygen.
A __________ is a non-destructive test that employs a colored spray to highlight
flaws in a weld. - ANSWER dye penetration test
A red welding hose shows that it transports _________. - Answer: acetylene.
When welding with the __________, lean the electrode 15 to 25 degrees in the
direction of movement. - ANSWER Pull method
__________ metal is a metal with a similar composition to the one being bonded. It
reinforces the weld by filling the space formed between the two pieces of metal
while welding. - Answer filler
Metals treated with __________ procedures soften. - Answer: annealing.
,Oxy-acetylene welding requires no __________ and is not affected by wind or
drafts like Gas Metallic Arc Welding or Gas Tungsten Arc Welding. - Answer:
electricity.
What fault does a magnaflux test reveal in ferrous metal? - ANSWER Cracks in the
surface
A spot welding system has an electrical supply, a movable arm, and a(n)
__________. - ANSWER: stationary arm.
What device should be kept at least 20 feet away from flammable materials? -
Answer: Oxygen cylinders.
The gas metal arc welding (GMAW) procedure melts the metal wire and fuses it to
the base metal being welded. - ANSWER Electricity
Circuit testers determine whether or not electricity is present. - ANSWER AC
A knife switch is made up of a lever and one or more sets of _________. -
ANSWER contacts
The __________ is an electrical circuit component that allows the operator to
operate the system. - ANSWER input device.
The current that only runs in one direction is __________. - Answer DC
consistent voltage power supplies keep a consistent voltage under different
conditions. - ANSWER loads.
10mA is an example of a _________ value. - ANSWER current
, Resistance is measured using the A(n) __________. - ANSWER Ohmmeter.
Voltage is an electrical _________. ANSWER force
If a wire is continuous, it_________. - ANSWER will face almost no resistance
A circuit's current is distributed among its branches. - Answer in parallel
The resistance of a parallel circuit increases as more branches are added. -
ANSWER decreases
A multimeter is a versatile tool that can measure _________. - ANSWER Voltage,
Current, and Resistance
In a parallel circuit powered by a constant voltage supply, the voltage drop across
each branch is __________. - ANSWER equals the power supply voltage.
A(n) __________ circuit contains more than one way for current to travel. -
Answer in parallel
An ammeter measures __________. - ANSWER current
There are two methods for measuring voltage: __________ and __________. -
ANSWER across a component, using a reference
Both analog and digital voltmeters measure __________. - ANSWER Potential
Difference
