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Unit 31 quiz

Authored by Timothy McIntyre

Professional Development

Professional Development

Used 1+ times

Unit 31 quiz
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27 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A furnace with a vertical air flow through the heat exchanger and the blower compartment beneath the heat exchanger is called a(n) ____.

upflow

downflow

low boy

horizontal

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The orifice is a precisely sized hole in the ____.

manifold

spud

burner tube

combustion chamber

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Most gas furnaces and appliances use a(n) ____ burner.

compressed

hybrid

pressurized

atmospheric

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The proper color of a gas flame is ____.

sharp all blue

lazy all blue

blue with slight orange tips

lazy with yellow tips

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A condensing gas furnace uses ____ from a condensing type heat exchanger to increase the furnace efficiency.

sensible heat

latent heat

superheat

subcooling

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a conventional gas furnace, the hot flue gases are ____.

forced out a PVC vent with a blower

recycled through a secondary heat exchanger and then vented through a draft diverter

forced through a type B vent by a blower

vented by natural convection

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Primary air adjusters on atmospheric type gas burners are usually ____.

butterfly shutters

sliding sleeves

spoiler screws

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