When checking the resistance of the compressor start winding, the technician's multimeter shows 3.1 . This indicates that:
A) The winding is open. B) The winding is grounded.
C) The winding is shorted. D) The winding has continuity and is good.
[Ques. 2] What would happen if metal debris fell into the heating element?
A) It is not possible for debris to fall into a heating element.
B) The debris could cause the heating element to turn on.
C) The debris would do nothing.
D) The debris could cause the heating element to fail and never turn on.
[Ques. 3] Each component in a communicating control system must have its own:
A) Microprocessor. B) Transformer. C) 24 V relay. D) Power supply.
[Ques. 4] Poor ice quality and low production are common problems for ice makers. What could be a possible cause of small cubes and lack of production?
A) Low inlet water flow only
B) High discharge pressure or a blocked metering device only
C) Low inlet water flow or refrigerant undercharge only
D) Low inlet water flow, refrigerant undercharge, high discharge pressure, or a blocked metering device
[Ques. 5] A heat recovery ventilation system saves energy by:
A) Decreasing the size of the indoor air-conditioning system blower.
B) Exchanging heat between the supply and exhaust air streams.
C) Preheating the ventilation exhaust air with electric heat strips.
D) Preheating the ventilation supply air with electric heat strips.
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