When replacing fuses be sure to match which of these ratings?
A) Amperage
B) Class
C) Voltage
D) Instantaneous current
E) All of these should be matched.
[Ques. 2] State the primary difference between a detector and a meter.
A) Detectors are calibrated in standard units and meters are calibrated in metric units.
B) A meter simply detects the presence of a contaminant. A detector measures the amount of the contaminant.
C) They are two words for the same instruments.
D) A detector simply detects the presence of a contaminant. A meter measures the amount of the contaminant.
[Ques. 3] What happens if standard fuses and circuit breakers are used in the overload protection?
A) Nuisance trips will occur when the compressor stops.
B) Nuisance trips will occur when the compressor starts.
C) The overload protection will not meet code.
D) The overload protection will function normally.
[Ques. 4] Which type of chiller is more likely to freeze the tubes if charged or recovered improperly?
A) Flooded chillers B) Screw chillers
C) Direct expansion chillers D) Absorption chillers
[Ques. 5] The ENERGY STAR label is awarded to packaged air-to-air units with EERs of ________ or greater, SEERs of ________ or greater, and HSPFs of ________ or greater.
A) EER 12, SEER 16, HSPF 8 B) EER 10, SEER 13, HSPF 7.7
C) EER 11, SEER 14, HSPF 8 D) EER 16, SEER 22, HSPF 13
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