A) 100-450
B) 0.5 to 3
C) 6,000-30,000
D) 500-1500
Modifications such as adding a liquid-line solenoid at the outdoor unit, using a hard shutoff thermal expansion valve at the evaporator, and adding a compressor hard-start kit are recommended when:
A) The refrigerant line length is over 40 ft. B) The system is converted from 22 to 410a.
C) The refrigerant line length is over 80 ft. D) The refrigerant line length is less than 50 ft.
C
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Answer the following statement true (T) or false (F)
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Typical primary coil resistance specifications usually range from? ________ ohms.
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Types of humidifiers used with commercial air-handling equipment include:
A) Bypass, atomizing, and wetted media. B) Direct expansion, steam, and hot water. C) Steam grid, steam pan, and direct water spray. D) Direct expansion, chilled water, and steam.
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Gear A has 33 teeth, and gear B has 22 teeth. What is the ratio of the number of teeth on A to the number of teeth on B?
A. 5:4 B. 4:3 C. 3:2 D. 2:1
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