ASF ASF Tools and Equipment Usage

Question 1

Which tool is most appropriate for measuring the resistance of a heating element in a clothes dryer?

Accepted Answer

Digital multimeter

Answer

Clamp meter

Answer

Oscilloscope

Answer

Megohmmeter

Question 2

What is the primary purpose of a refrigerant recovery machine in appliance service?

Accepted Answer

To safely remove and store refrigerant before repairs

Answer

To recharge refrigerant into a system

Answer

To measure refrigerant pressure

Answer

To detect refrigerant leaks

Question 3

Which instrument is used to measure the suction and discharge pressures of a refrigeration system simultaneously?

Accepted Answer

Manifold gauge set

Answer

Psychrometer

Answer

Digital thermometer

Answer

Anemometer

Question 4

When using a clamp meter on an appliance, what quantity does the clamp directly measure without breaking the circuit?

Accepted Answer

Current (amperage)

Answer

Voltage

Answer

Resistance

Answer

Power factor

Question 5

What is the correct procedure before using a vacuum pump on a refrigeration system?

Accepted Answer

Recover all refrigerant from the system

Answer

Pressurize the system with nitrogen

Answer

Flush the system with water

Answer

Replace the compressor oil first

Question 6

A technician uses a non-contact infrared thermometer on a range burner. What property is being measured?

Accepted Answer

Surface temperature via emitted infrared radiation

Answer

Ambient air temperature nearby

Answer

Internal flame temperature

Answer

Gas flow rate