HVA 121 QUIZ ONE EXAM QUESTIONS AND ANSWERS
The organization that establishes manufacturing standards for copper tubing is ______________ -
CORRECT ANSWER✅✅ATSM
The working pressure rating of hard-drawn copper tubing is typically _________. - CORRECT
ANSWER✅✅60% higher than soft copper tubing.
As the wall thickness of copper tubing increases, the inside diameter of the tube is ____________. -
CORRECT ANSWER✅✅decreased.
One of the main uses of flare fittings in HVAC work is to _____________. - CORRECT
ANSWER✅✅Connect various pressure controls.
One of the best reasons to use a tubing cutter instead of a hacksaw is that _____________. - CORRECT
ANSWER✅✅it does not create loose cuttings.
Single thickness flares may not be strong enough for ________________. - CORRECT ANSWER✅✅larger
sizes of copper tubing
The pressure-relief valve on a nitrogen pressure test set should be set to relieve pressure at
____________ - CORRECT ANSWER✅✅1 or 2 pounds above the required test pressure.
What type of tubing or pipe would be expected to require the closest hanger spacing? (1/2" copper, 1
1/2" copper, 3/4" steel pipe, 2" steel pipe) - CORRECT ANSWER✅✅1/2" copper
The type of plastic pipe that does not support combustion is _________. - CORRECT ANSWER✅✅CPVC
Which plastic product is the most widely used in the plumbing industry? - CORRECT ANSWER✅✅PEX
Which type of plastic piping can be threaded? (PEX, Schedule 40 PVC, Schedule 80 PVC, Schedule 40
CPVC) - CORRECT ANSWER✅✅Schedule 80 PVC.
, The most common way to join plastic pipe is ______________. - CORRECT ANSWER✅✅Solvent
cementing
The handling and curing times in wet environments for solvent-cement joints in plastic piping should be
extended ________. - CORRECT ANSWER✅✅50%
When a metal can be pressed or formed to some degree without cracking and breaking, it is said to be
__________ - CORRECT ANSWER✅✅Malleable
A(n) _________ component has been coated with or covered with a thin layer of copper. - CORRECT
ANSWER✅✅Copper-clad
The compression ring that is placed around a tube, and then squeezed against the tube by the
compression nut is called a(n) ________. - CORRECT ANSWER✅✅ferrule
A heat bonding method of joining metals using an alloy with a melting point below 842 Degrees F (450
degrees C) is called ________. - CORRECT ANSWER✅✅soldering
When one metal, sometimes precious such as gold, is going to be used to cover another metal, the
intent is to ________ the second metal. - CORRECT ANSWER✅✅plate
A(n) _________ metal has been heat treated to soften it, making it formable. - CORRECT
ANSWER✅✅annealed
When a symmetrical, angled surfaces is created on the edge of a pipe or tube, breaking what would
other wise be a 90 degree angle, this edge is called a(n) _____________ - CORRECT
ANSWER✅✅chamfer
The process of _______________ occurs when a metal is repetitively reformed, causing a permanent
change in its crystalline structure, which results in an increase in its hardness. - CORRECT
ANSWER✅✅work hardeneing
The organization that establishes manufacturing standards for copper tubing is ______________ -
CORRECT ANSWER✅✅ATSM
The working pressure rating of hard-drawn copper tubing is typically _________. - CORRECT
ANSWER✅✅60% higher than soft copper tubing.
As the wall thickness of copper tubing increases, the inside diameter of the tube is ____________. -
CORRECT ANSWER✅✅decreased.
One of the main uses of flare fittings in HVAC work is to _____________. - CORRECT
ANSWER✅✅Connect various pressure controls.
One of the best reasons to use a tubing cutter instead of a hacksaw is that _____________. - CORRECT
ANSWER✅✅it does not create loose cuttings.
Single thickness flares may not be strong enough for ________________. - CORRECT ANSWER✅✅larger
sizes of copper tubing
The pressure-relief valve on a nitrogen pressure test set should be set to relieve pressure at
____________ - CORRECT ANSWER✅✅1 or 2 pounds above the required test pressure.
What type of tubing or pipe would be expected to require the closest hanger spacing? (1/2" copper, 1
1/2" copper, 3/4" steel pipe, 2" steel pipe) - CORRECT ANSWER✅✅1/2" copper
The type of plastic pipe that does not support combustion is _________. - CORRECT ANSWER✅✅CPVC
Which plastic product is the most widely used in the plumbing industry? - CORRECT ANSWER✅✅PEX
Which type of plastic piping can be threaded? (PEX, Schedule 40 PVC, Schedule 80 PVC, Schedule 40
CPVC) - CORRECT ANSWER✅✅Schedule 80 PVC.
, The most common way to join plastic pipe is ______________. - CORRECT ANSWER✅✅Solvent
cementing
The handling and curing times in wet environments for solvent-cement joints in plastic piping should be
extended ________. - CORRECT ANSWER✅✅50%
When a metal can be pressed or formed to some degree without cracking and breaking, it is said to be
__________ - CORRECT ANSWER✅✅Malleable
A(n) _________ component has been coated with or covered with a thin layer of copper. - CORRECT
ANSWER✅✅Copper-clad
The compression ring that is placed around a tube, and then squeezed against the tube by the
compression nut is called a(n) ________. - CORRECT ANSWER✅✅ferrule
A heat bonding method of joining metals using an alloy with a melting point below 842 Degrees F (450
degrees C) is called ________. - CORRECT ANSWER✅✅soldering
When one metal, sometimes precious such as gold, is going to be used to cover another metal, the
intent is to ________ the second metal. - CORRECT ANSWER✅✅plate
A(n) _________ metal has been heat treated to soften it, making it formable. - CORRECT
ANSWER✅✅annealed
When a symmetrical, angled surfaces is created on the edge of a pipe or tube, breaking what would
other wise be a 90 degree angle, this edge is called a(n) _____________ - CORRECT
ANSWER✅✅chamfer
The process of _______________ occurs when a metal is repetitively reformed, causing a permanent
change in its crystalline structure, which results in an increase in its hardness. - CORRECT
ANSWER✅✅work hardeneing
