MSSC - Maintenance Awareness UPDATED
Exam Questions and CORRECT Answers
Metals that contain iron, such as steel, have _____________ properties. - CORRECT
ANSWER - 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. -
CORRECT ANSWER - Filler
The gas metal arc welding (GMAW) process uses ______________ to melt metal wire and fuse
it with the base metal being welded. - CORRECT ANSWER - electricity
Metals that contain iron, such as mild steel, are called ____________ metals. - CORRECT
ANSWER - ferrous
A spot welding system consists of an electrical supply, moveable arm, and a(n)
_______________. - CORRECT ANSWER - stationary arm
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
Metals that contain iron, such as steel are called _____________ metals. - CORRECT
ANSWER - ferrous
A green welding hose indicated that this hose carries __________. - CORRECT
ANSWER - Oxygen
,Torches are designed to avoid mixing oxygen and acetylene by using ________________. -
CORRECT ANSWER - Reverse-flow check valves at torch inlets or regulator outlets
An explosion can occur if ___________ comes into contact with oil. - CORRECT
ANSWER - High pressure oxygen
A Magnaflux test is used to show what flaw in ferrous metal? - CORRECT ANSWER -
Cracks in the surface
When using the ____________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. - CORRECT ANSWER - pull technique
the maximum pressure for use of acetylene gas is _______ psi. - CORRECT ANSWER -
15
A red welding hose indicates that this hose carries __________. - CORRECT ANSWER -
Acetylene
A(n) ___________ is a non-destructive test that uses a colored spray to reveal imperfections in a
weld. - CORRECT ANSWER - dye-penetrant test
To prevent leakage around the valve during use, _____________. - CORRECT
ANSWER - An oxygen cylinder valve should be opened all the way
What device should be stored a minimum of 20 feet from flammable materials? - CORRECT
ANSWER - Oxygen Cylinders
Dirt and other foreign material should be cleaned out of an oxygen cylinder before installing a
regulator. By what method should this be done? - CORRECT ANSWER - The cylinder
valve should be cracked open slightly and then closed completely
, The component of an electrical circuit that gives the operator control is the __________. -
CORRECT ANSWER - input device
Electricity creates the flow of __________ in a conductor. - CORRECT ANSWER -
electrons
Constant voltage power supplies will maintain a constant voltage under varying __________. -
CORRECT ANSWER - loads
The primary purpose of a switch is to __________. - CORRECT ANSWER - energize and
deenergize circuits
A knife switch consists of a lever and one or more sets of __________. - CORRECT
ANSWER - contacts
Circuit testers determine if __________ electricity is present. - CORRECT ANSWER - AC
Which of the following is true of an electrical schematic diagram? - CORRECT
ANSWER - All of the above
The type of current that only flows in one direction is __________. - CORRECT
ANSWER - DC
Which of the following is often used to start or stop machine operation? - CORRECT
ANSWER - Pushbutton switch
Which of the following is an electrical output device? - CORRECT ANSWER - All of the
above (motor, lamp, resistor)
Exam Questions and CORRECT Answers
Metals that contain iron, such as steel, have _____________ properties. - CORRECT
ANSWER - 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. -
CORRECT ANSWER - Filler
The gas metal arc welding (GMAW) process uses ______________ to melt metal wire and fuse
it with the base metal being welded. - CORRECT ANSWER - electricity
Metals that contain iron, such as mild steel, are called ____________ metals. - CORRECT
ANSWER - ferrous
A spot welding system consists of an electrical supply, moveable arm, and a(n)
_______________. - CORRECT ANSWER - stationary arm
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
Metals that contain iron, such as steel are called _____________ metals. - CORRECT
ANSWER - ferrous
A green welding hose indicated that this hose carries __________. - CORRECT
ANSWER - Oxygen
,Torches are designed to avoid mixing oxygen and acetylene by using ________________. -
CORRECT ANSWER - Reverse-flow check valves at torch inlets or regulator outlets
An explosion can occur if ___________ comes into contact with oil. - CORRECT
ANSWER - High pressure oxygen
A Magnaflux test is used to show what flaw in ferrous metal? - CORRECT ANSWER -
Cracks in the surface
When using the ____________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. - CORRECT ANSWER - pull technique
the maximum pressure for use of acetylene gas is _______ psi. - CORRECT ANSWER -
15
A red welding hose indicates that this hose carries __________. - CORRECT ANSWER -
Acetylene
A(n) ___________ is a non-destructive test that uses a colored spray to reveal imperfections in a
weld. - CORRECT ANSWER - dye-penetrant test
To prevent leakage around the valve during use, _____________. - CORRECT
ANSWER - An oxygen cylinder valve should be opened all the way
What device should be stored a minimum of 20 feet from flammable materials? - CORRECT
ANSWER - Oxygen Cylinders
Dirt and other foreign material should be cleaned out of an oxygen cylinder before installing a
regulator. By what method should this be done? - CORRECT ANSWER - The cylinder
valve should be cracked open slightly and then closed completely
, The component of an electrical circuit that gives the operator control is the __________. -
CORRECT ANSWER - input device
Electricity creates the flow of __________ in a conductor. - CORRECT ANSWER -
electrons
Constant voltage power supplies will maintain a constant voltage under varying __________. -
CORRECT ANSWER - loads
The primary purpose of a switch is to __________. - CORRECT ANSWER - energize and
deenergize circuits
A knife switch consists of a lever and one or more sets of __________. - CORRECT
ANSWER - contacts
Circuit testers determine if __________ electricity is present. - CORRECT ANSWER - AC
Which of the following is true of an electrical schematic diagram? - CORRECT
ANSWER - All of the above
The type of current that only flows in one direction is __________. - CORRECT
ANSWER - DC
Which of the following is often used to start or stop machine operation? - CORRECT
ANSWER - Pushbutton switch
Which of the following is an electrical output device? - CORRECT ANSWER - All of the
above (motor, lamp, resistor)
