HVAC HVAC Tools and Equipment 2

Question 1

A clamp meter (clamp-on ammeter) measures current by detecting what around a conductor?

Accepted Answer

Magnetic field

Answer

Voltage drop

Answer

Resistance

Answer

Temperature

Question 2

Which tool is specifically designed to detect refrigerant leaks in an HVAC system?

Accepted Answer

Electronic leak detector

Answer

Combustible gas detector

Answer

Infrared thermometer

Answer

Smoke pencil

Question 3

What does a digital manifold gauge set provide that an analog set does not?

Accepted Answer

Superheat and subcooling calculations

Answer

Higher pressure range

Answer

Compatibility with all refrigerants

Answer

Ability to recover refrigerant

Question 4

Which tool is used to cut copper refrigerant tubing cleanly without leaving burrs that could damage a compressor?

Accepted Answer

Tubing cutter

Answer

Hacksaw

Answer

Pipe wrench

Answer

Reciprocating saw

Question 5

A nitrogen tank and regulator are used during HVAC installation primarily to:

Accepted Answer

Pressure test and purge the refrigerant circuit before brazing

Answer

Pressurize the refrigerant charge

Answer

Operate pneumatic tools

Answer

Charge the system when refrigerant is unavailable

Question 6

What type of scale is required when charging an HVAC system by weight?

Accepted Answer

Refrigerant charging scale

Answer

Bathroom scale

Answer

Postal scale

Answer

Torque scale