Electric defrosting devices used with evaporator units are classified as which type of component?

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Prepare for the New York City Refrigeration License Exam I. Utilize flashcards, multiple-choice questions, and detailed explanations to boost your readiness. Ace your licensing exam!

Multiple Choice

Electric defrosting devices used with evaporator units are classified as which type of component?

Explanation:
Electric defrosting devices used with evaporator units are heating elements that generate heat through electrical resistance. They’re designed as resistors because their purpose is to convert electrical energy into heat when current passes through the resistance wire or element, melting frost on the coil during the defrost cycle. A thermostat is a sensing/control device that decides when to start or stop defrost, a diode directs current, and a capacitor stores energy—not used to produce steady heating. The defrost heater’s role as a resistor makes it the best fit.

Electric defrosting devices used with evaporator units are heating elements that generate heat through electrical resistance. They’re designed as resistors because their purpose is to convert electrical energy into heat when current passes through the resistance wire or element, melting frost on the coil during the defrost cycle. A thermostat is a sensing/control device that decides when to start or stop defrost, a diode directs current, and a capacitor stores energy—not used to produce steady heating. The defrost heater’s role as a resistor makes it the best fit.

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