Modern History Questions
Explore questions in the Modern History category that you can ask Spark.E!
What component is installed vertically near the compressor on hermetic compressors and open-drive compressors to reduce noise caused by gas pulsation?
Which compressors has its motor sealed inside the same dome or housing as the compressor?
Special variable-pitch pulleys for motors are adjustable. When a technician narrows the pulley's groove, the belt rides farther from the hub, _______ the speed of a belt-driven blower.
Which compressors combines a motor and a compressor inside a multipart shell that is bolted together?
When used with thermostatic expansion valves, superheat refers to the difference in temperature between the evaporator inlet and ______________.
When a specific electronic device does not work on a circuit board, what is usually the easiest and quickest option?
What is the liquid refrigerant that flashes (changing density) to a vapor because of the pressure drop in an expansion device?
A/an __________ is the voltage applied across an electrical load that is causing current to flow through it.
What type of ACR copper tubing is most commonly used in air conditioning and refrigeration work?
A/an ___________ allows current to flow to and from a power source along two or more electrical paths, each of which has only one electrical load.
The units for solving for electric current are _________, using Ohm's law.
If a refrigeration system cannot hold a vacuum after being evacuated, then it probably has which of the following?
Which service valve in a refrigeration system do you use to access the low side of the system?
_____________ refers to cleaning a refrigerant for reuse by separating out the oil and passing the refrigerant through filter-driers.
When referring to a system's capacity, most technicians define a ton of refrigeration as ________.
_________ is the condition value at which a device ceases operation.
Which method creates the strongest metal pipe to metal pipe connection?
To measure the manifold pressure in a gas furnace, what tool do you use?
A/n__________ is a heat-exchanging device that absorbs heat into its refrigerant.
Electrical force required to send one amp of current through a resistance of one ohm