HVAC Quiz

Which soldering technique is preferred for joining copper pipes in HVAC systems?

• Welding with a blowtorch

• Silver soldering with flux

• Using duct tape

• Glueing with epoxy

What are the safety precautions to be taken during HVAC soldering and brazing?

• Using flammable materials

• Wearing protective gear, ensuring proper ventilation, and using fire-resistant materials

• Working in a poorly ventilated area

• Not wearing protective gear

Explain the role of filler metal in brazing for HVAC applications.

• Filler metal in brazing for HVAC applications is used to create a weak joint between the base metals.

• Filler metal in brazing for HVAC applications is used to cool down the base metals.

• Filler metal in brazing for HVAC applications is used to repel the base metals.

• Filler metal in brazing for HVAC applications is used to join the base metals together by capillary action and create a strong, leak-tight joint.

How does the temperature requirement differ between soldering and brazing in HVAC?

• Brazing requires lower temperature

• Soldering and brazing require the same temperature

• Temperature requirement is not a factor in soldering and brazing

• Soldering requires lower temperature

Tags

NGSS.HS-PS3-4

Dewpoint is an absolute measure of how much moisture in the air

• True

• False

Dew Point is the

• temperature air cools down to reach condensation (or turn into a liquid)

• temperature where ice melts to liquid water

• temperature where ice turns directly into water vapor

• time of day when dew on the ground disappears

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

What will happen if the relative humidity is 100%, and the temperature begins falling?

• The air will be sticky and uncomfortable

• Dew will form

• The temperature will rise

• The atmospheric pressure will fall

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

The temperature at which air is saturated with water vapor and condensation occurs is called

• humidity

• air pressure

• dew point

• relative humidity

Tags

NGSS.MS-ESS2-4

If the air temperature gets warmer, but the TOTAL amount of water vapor in the air stays the same, what will happen to the RELATIVE humidity?

• relative humidity will decrease

• relative humidity will increase

• relative humidity will stay the same

Tags

NGSS.MS-ESS2-5

Which words below better describes the ventilation strategy used in the building?

• Natural ventilation

• Mechanical ventilation

• Hybrid ventilation

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3