Hvacr - Study guides, Class notes & Summaries

HVACR UNIT 16 EXAM LATEST UPDATE...

All NATE specialties are offered at two levels. They are: - Installation and Service Codes are different than industry standards because codes are - Required by Law Customers often judge the ability of an HVACR technician by - His Apperance, Neatness of vehicle, cleanliness of work equipment (All of the above) Every HVACR technician must become certified under the EPA Section 608 regulations. This certification is to ensure the technician understands and complies with the regulations regard...

A solution used as a secondary refrigerant in chillers consisting of water and a chemical which lowers the water's freezing point is called: - Brine. Air-conditioning tube-and-fin coils are commonly available as: - Slab coils, slant coils, "A" coils, and "N" coils. An evaporator in which refrigerant enters as a saturated liquid vapor mix and leaves as a superheated vapor is a: - Direct expansion evaporator. An evaporator that covers the coils being cooled with liquid refrigerant is a:...

d (very important) - - The ability to utilize all types of communication skills is ____ to the HVACR technician. a. not as important as "hands-on" technical skills b. somewhat important c. unimportant d. very important d (all of the above: clear, complete, concise) - - It is important to be ____ in filling out service orders so that office staff, other technicians, and customers will know what work you completed on the job. a. clear b. complete c. concise d. all of the above d (Refrigerant) - ...

(I) represents in equation - "intensity" 12-gauge (AWG)= 20 amps is recommended for - residential receptacle outlets. 14-gauge (AWG)= 15 amps wire be suitable for - lighting circuits. a breaker rated for 15 amps is installed into a 30 amp circuit - not enough current to flow a breaker that is rated at 30 amps installed into a 15 amp circuit - would allow too much current flow. a closed circuit is - a circuit with complete path and allows the load to function. A kilowatt is equal to - 1,...

A common rating that's used to specify the capacity of refrigeration equipment is the _______, which is equal to 12,000 BTU per hour - Ton A gas has a weight of 5 pounds and a volume of 100 cubic feet. What is the specific volume of this gas? - 20 A gauge pressure of 30 psig is equivalent to an absolute pressure of - 44.7 According to Charles's law, if the temperature of a gas is increased, then the - volume would increase An electric motor that's rated at 5 horsepower can produce ____...

How much current is drawn by a 120V circuit containing a 1,500W load? Ans: 12.5A How much power is consumed by a 120V parallel circuit that contains a 100 load and an 80 load and draws 2.7A? Ans: 125W What characteristic do devices that use DC instead of AC power often have in common? Ans: They are battery-powered and mobile One milliamperes is equal to _____. Ans: 1/1,00 of an amp Current is measured in ______. Ans: Amperes If a load is supplied by 120V and draws 5A of current, how ...

NCCER HVACR SECTION 3 ; BASIC ELECTRICITY TEST 2024...

Basic HVACR 100 UPDATED Exam Questions and CORRECT Answers True or False: Refrigeration systems are designed to operate with only refrigerant and oil in the system - Ans True Air contains three non-condensibles that are detrimental to the system - Ans Air, nitrogen, moisture A compound guage is used to measure vacuum level - Ans Low side/ blue gauge Molecular motion stops at what degree Fahrenheit? - Ans -460 degrees The law of conservation states that energy can neither be_____ or __...