HVAC Level 1 Module 9 Exam Questions
and Answers 100% Solved | Rated A+
Pipe sizes up to 12" are _________. - ✔✔inside diameter.
Threaded dies fit all schedules of pipe for the same ______ _______. -
✔✔nominal size
Galvanized fittings should be used with __________ ________ -
✔✔galvanized pipe
A ground joint union is held together by the _______. - ✔✔collar
A typical tapered pipe reamer can handle pipe sizes from _______ to
________". - ✔✔1/4 to 2
Oiling pipe threads helps ________ __________. - ✔✔prevent
overheating.
Pipe unions allow for the _______ ________ ___ ___ ____________. -
✔✔final joints to be assembled
When can PTFE tape be used on natural gas piping? - ✔✔only if local
codes allow
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, A chain wrench must be used in place of a pipe wrench when pipe is over
___". - ✔✔2
What is not a consideration for steam and hydronic piping systems? -
✔✔supports from equipment
The type of pipe used for natural gas supply to a furnace is ______ _____.
- ✔✔black iron
The inside diameter of a given nominal size of schedule 80 pipe is less
than that of schedule 40? True or False - ✔✔True
Of the following types of pipe, which is the strongest? Schedule 5, schedule
40, schedule 20, schedule 120 - ✔✔schedule 120
All weights of steel pipe have the same ________ ________. - ✔✔outside
diameter
The standard thread pitch for a 1/2" pipe size is __ ______ ____ ______. -
✔✔14 threads per inch
A tee fitting described as 2 X 1 1/2 X 1 has a large run size of ___", small
run size of ___", and a branch size of __". - ✔✔2, 1 1/2, 1
Pipe nipples are used to make extensions or join ____ _______. - ✔✔two
fittings
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
and Answers 100% Solved | Rated A+
Pipe sizes up to 12" are _________. - ✔✔inside diameter.
Threaded dies fit all schedules of pipe for the same ______ _______. -
✔✔nominal size
Galvanized fittings should be used with __________ ________ -
✔✔galvanized pipe
A ground joint union is held together by the _______. - ✔✔collar
A typical tapered pipe reamer can handle pipe sizes from _______ to
________". - ✔✔1/4 to 2
Oiling pipe threads helps ________ __________. - ✔✔prevent
overheating.
Pipe unions allow for the _______ ________ ___ ___ ____________. -
✔✔final joints to be assembled
When can PTFE tape be used on natural gas piping? - ✔✔only if local
codes allow
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, A chain wrench must be used in place of a pipe wrench when pipe is over
___". - ✔✔2
What is not a consideration for steam and hydronic piping systems? -
✔✔supports from equipment
The type of pipe used for natural gas supply to a furnace is ______ _____.
- ✔✔black iron
The inside diameter of a given nominal size of schedule 80 pipe is less
than that of schedule 40? True or False - ✔✔True
Of the following types of pipe, which is the strongest? Schedule 5, schedule
40, schedule 20, schedule 120 - ✔✔schedule 120
All weights of steel pipe have the same ________ ________. - ✔✔outside
diameter
The standard thread pitch for a 1/2" pipe size is __ ______ ____ ______. -
✔✔14 threads per inch
A tee fitting described as 2 X 1 1/2 X 1 has a large run size of ___", small
run size of ___", and a branch size of __". - ✔✔2, 1 1/2, 1
Pipe nipples are used to make extensions or join ____ _______. - ✔✔two
fittings
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
