The reading from a wet-bulb thermometer ____.

A. is the same as the wet-bulb depression
B. is the saturation pressure
C. takes into account the moisture content of the air
D. is always higher than the dry-bulb temperature


Answer: C

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When retrofitting a system from R-12 to R-134a, what is required to be done?

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Hoisting or rigging operations must be halted when the temperature is _____.

a. over 90°F b. low enough that hoist or crane steel structures could fracture upon shock or impact c. below 32°F d. high enough that workers may suffer heat exhaustion if they don't take precautions

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SEER is calculated based on the total amount of cooling (in BTU) the system will provide over the entire season, divided by the total number Watt-Hours it will consume.

Answer the following statement true (T) or false (F)

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The process of combustion occurring without an open flame is called ________

A) Cold fusion B) Non-flame combustion C) Direct ignition D) Spontaneous combustion

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