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HVAC Questions and Answers (Q&A)

Carice Snow, Motivator
Answered: Jun 20, 2019
The correct answer to this question is D, 18 5/8". Knowing the correct length to cut is essential. Many pipe cutting formulas can help determine the exact extent needed to cut. If the question...Read More

4 Answers

M. Wright
Answered: Sep 17, 2019
The correct answer to this question is A, 6 feet. A person who works in HVAC and deals with housing codes would know the answer to this question. This is in correspondence with IRC G2408.3...Read More

3 Answers

Anthony Paul Bonadio, Teacher
Answered: Jan 29, 2019
The correct answer to this question is B. In HVAC (heating, ventilation, and air conditioning) there are two shapes of vertical ductwork: round and rectangular. For sheet metal ductwork,...Read More

2 Answers

M. Wright
Answered: Sep 17, 2019
There are two correct answers to this question which are, A. Allows space for clean bends in metal and B. Indicates where a bend should occur when laying out and marking. This tool would be used...Read More

1 Answer

Wiley
Answered: Feb 05, 2018

IMC page 24 , section 304.7

PRIVATE GARAGE is a min of 6 Feet

PUBLIC GARAGE is a min of 8 Feet

Its Wrong and Williams is wrong

1 Answer

Wiley
Answered: Feb 05, 2018

IMC Page 50. Table 504.8.4.1

It has 8" smooth Raduis 90 degree eblow is 1 foot 7 inches

has nothing on 5' nor mitered 8" elbows

1 Answer

John Adney
Answered: Sep 18, 2017

Are these questions actual ones from the n31 test? I take the test tomorrow and need to know.

1 Answer

John Adney
Answered: Dec 03, 2017

The answer to this question is 3/4" , not 1"

Table 307.2.2 - up 20 tons - 3/4"

over 20 tons to 40 tons - 1"

1 Answer

John Adney
Answered: Oct 20, 2017

Could you explain further? Why is it less and not more?

1 Answer

M. Wright
Answered: Sep 17, 2019
There are two correct answers to this question, which are A device that depends on head pressure to allow the flow of condensed water and A device that depends on head pressure, water on or off...Read More

1 Answer

M. Wright
Answered: Sep 17, 2019
The correct answer to this question is C. Turn the fan on continually. Depending on where one is in the country, wintertime can be blistering cold. It can be hard to keep any home warm during...Read More

1 Answer

M. Wright
Answered: Sep 17, 2019
The correct answer to this question is C. Turn the fan on continually. During the wintertime, it is difficult to keep a house warm. It is especially difficult for a larger home and for those...Read More

1 Answer

Carlos
Answered: Aug 03, 2017
The high side of a system has superheated/high pressurerefrigerant (gas) comming out the compressor and half way condenser and subcooled/high pressure refrigerant (liquid) on the liquid line and...Read More

1 Answer

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