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MSSC MAINTENANCE AWARENESS EXAM WITH {243} QUESTIONS AND VERIFIED ANSWERS
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MSSC MAINTENANCE AWARENESS EXAM WITH {243}QUESTIONS AND VERIFIED ANSWERS
Metals containing iron, such as steel, have _____________ characteristics. -
Answer: Magnetic
________________ metal is a metal with a comparable composition to the one
being connected. It reinforces the weld by filling the space formed between the two
pieces of metal while welding. - Answer filler
The gas metal arc welding (GMAW) procedure melts the metal wire and fuses it to
the base metal being welded. - Answer: electricity.
Iron-containing metals, such as mild steel, are referred to be ______ metals. -
Answer: ferrous.
A spot welding system is made up of an electrical supply, a moving arm, and a(n)
_____________. - ANSWER: stationary arm.
Metals treated with ____________ procedures soften. - ANSWER Annealing.
Oxy-acetylene welding requires no shielding and is not affected by wind or drafts,
unlike Gas Metallic Arc Welding or Gas Tungsten Arc Welding. - Answer:
electricity.
Metals containing iron, such as steel, are known as ____________ metals. -
Answer: ferrous.
A green welding hose indicates that it carries _________. - ANSWER: oxygen.
,Torches use ________________ to prevent oxygen and acetylene from mixing. -
Answer: Reverse-flow check valves at torch inlets or regulator outlets.
When ___________ comes into contact with oil, it can cause an explosion. -
ANSWER: High-pressure oxygen.
What defect does a Magnaflux test reveal in ferrous metal? - ANSWER Cracks in
the surface
When welding with the ____________, lean the electrode 15 to 25 degrees in the
direction of motion. - ANSWER Pull method
The maximum pressure for using acetylene gas is _____ psi. - Answer 15.
A red welding hose shows that it transports _________. - ANSWER: Acetylene
A(n) ___________ is a non-destructive test that employs a colored spray to
highlight flaws in a weld. - ANSWER dye penetration test
To avoid leakage around the valve during operation, _____________. - ANSWER
An oxygen cylinder valve should be opened completely.
What device should be kept at least 20 feet away from flammable materials? -
Answer: Oxygen cylinders.
Before installing an oxygen regulator, clear off any dirt or foreign material from the
cylinder. How should this be done? - ANSWER The cylinder valve should be split
open slightly before closing entirely.
The __________ is an electrical circuit component that allows the operator to
operate the system. - ANSWER input device.
, Electricity causes a flow of __________ in a conductor. - ANSWER electrons
consistent voltage power supplies keep a consistent voltage under different
conditions. - ANSWER loads.
A switch's principal function is to _________. - ANSWER: activate and
de-energize circuits.
A knife switch is made up of a lever and one or more sets of _________. -
ANSWER contacts
Circuit testers determine whether or not electricity is present. - ANSWER AC
Which of the following describes an electrical schematic diagram? - Answer: All of
the aforementioned.
The current that only runs in one direction is __________. - Answer DC
Which of the following is commonly used to start or halt machine operations? -
ANSWER: Pushbutton switch.
Which of the following represents an electrical output device? - Answer: All of the
above (motor, lamp, resistor).
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