MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT
DETAILED ANSWERS
Metals that contain iron, such as steel, have _____________ properties. - (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. - (answer) Filler
The gas metal arc welding (GMAW) process uses ______________ to melt metal wire and fuse it with
the base metal being welded. - (answer) electricity
Metals that contain iron, such as mild steel, are called ____________ metals. - (answer) ferrous
A spot welding system consists of an electrical supply, moveable arm, and a(n) _______________. -
(answer) stationary arm
Metals treated by ____________ processes become soft. - (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. - (answer) electricity
Metals that contain iron, such as steel are called _____________ metals. - (answer) ferrous
A green welding hose indicated that this hose carries __________. - (answer) Oxygen
Torches are designed to avoid mixing oxygen and acetylene by using ________________. - (answer)
Reverse-flow check valves at torch inlets or regulator outlets
An explosion can occur if ___________ comes into contact with oil. - (answer) High pressure oxygen
A Magnaflux test is used to show what flaw in ferrous metal? - (answer) Cracks in the surface
,MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT
DETAILED ANSWERS
When using the ____________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. - (answer) pull technique
the maximum pressure for use of acetylene gas is _______ psi. - (answer) 15
A red welding hose indicates that this hose carries __________. - (answer) Acetylene
A(n) ___________ is a non-destructive test that uses a colored spray to reveal imperfections in a weld. -
(answer) dye-penetrant test
To prevent leakage around the valve during use, _____________. - (answer) An oxygen cylinder valve
should be opened all the way
What device should be stored a minimum of 20 feet from flammable materials? - (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? - (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 __________. - (answer)
input device
Electricity creates the flow of __________ in a conductor. - (answer) electrons
Constant voltage power supplies will maintain a constant voltage under varying __________. - (answer)
loads
The primary purpose of a switch is to __________. - (answer) energize and deenergize circuits
, MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT
DETAILED ANSWERS
A knife switch consists of a lever and one or more sets of __________. - (answer) contacts
Circuit testers determine if __________ electricity is present. - (answer) AC
Which of the following is true of an electrical schematic diagram? - (answer) All of the above
The type of current that only flows in one direction is __________. - (answer) DC
Which of the following is often used to start or stop machine operation? - (answer) Pushbutton switch
Which of the following is an electrical output device? - (answer) All of the above (motor, lamp,
resistor)
The contacts of which switch type are open when acted on by the operator? - (answer) Normally
closed
Rotary motion is the output of which electrical output device? - (answer) Motor
As branches are added to a parallel circuit the resistance __________. - (answer) decreases
A multimeter is a multipurpose device that can measure __________. - (answer) voltage, current, and
resistance
An ammeter is used to measure __________. - (answer) current
To measure current through a component, the ammeter must be connected __________ the
component. - (answer) in series with
DETAILED ANSWERS
Metals that contain iron, such as steel, have _____________ properties. - (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. - (answer) Filler
The gas metal arc welding (GMAW) process uses ______________ to melt metal wire and fuse it with
the base metal being welded. - (answer) electricity
Metals that contain iron, such as mild steel, are called ____________ metals. - (answer) ferrous
A spot welding system consists of an electrical supply, moveable arm, and a(n) _______________. -
(answer) stationary arm
Metals treated by ____________ processes become soft. - (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. - (answer) electricity
Metals that contain iron, such as steel are called _____________ metals. - (answer) ferrous
A green welding hose indicated that this hose carries __________. - (answer) Oxygen
Torches are designed to avoid mixing oxygen and acetylene by using ________________. - (answer)
Reverse-flow check valves at torch inlets or regulator outlets
An explosion can occur if ___________ comes into contact with oil. - (answer) High pressure oxygen
A Magnaflux test is used to show what flaw in ferrous metal? - (answer) Cracks in the surface
,MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT
DETAILED ANSWERS
When using the ____________ in welding, the electrode should be leaned 15 to 25 degrees in the
direction of travel. - (answer) pull technique
the maximum pressure for use of acetylene gas is _______ psi. - (answer) 15
A red welding hose indicates that this hose carries __________. - (answer) Acetylene
A(n) ___________ is a non-destructive test that uses a colored spray to reveal imperfections in a weld. -
(answer) dye-penetrant test
To prevent leakage around the valve during use, _____________. - (answer) An oxygen cylinder valve
should be opened all the way
What device should be stored a minimum of 20 feet from flammable materials? - (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? - (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 __________. - (answer)
input device
Electricity creates the flow of __________ in a conductor. - (answer) electrons
Constant voltage power supplies will maintain a constant voltage under varying __________. - (answer)
loads
The primary purpose of a switch is to __________. - (answer) energize and deenergize circuits
, MSSC MAINTENANCE AWARENESS EXAM 2023-2024 ACTUAL EXAM 300 QUESTIONS AND CORRECT
DETAILED ANSWERS
A knife switch consists of a lever and one or more sets of __________. - (answer) contacts
Circuit testers determine if __________ electricity is present. - (answer) AC
Which of the following is true of an electrical schematic diagram? - (answer) All of the above
The type of current that only flows in one direction is __________. - (answer) DC
Which of the following is often used to start or stop machine operation? - (answer) Pushbutton switch
Which of the following is an electrical output device? - (answer) All of the above (motor, lamp,
resistor)
The contacts of which switch type are open when acted on by the operator? - (answer) Normally
closed
Rotary motion is the output of which electrical output device? - (answer) Motor
As branches are added to a parallel circuit the resistance __________. - (answer) decreases
A multimeter is a multipurpose device that can measure __________. - (answer) voltage, current, and
resistance
An ammeter is used to measure __________. - (answer) current
To measure current through a component, the ammeter must be connected __________ the
component. - (answer) in series with
