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Modern History
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