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26408-14 HVAC Controls - Quiz

hcannaday 5 Fragen

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Fragen in diesem Quiz (5)

  1. 1If lighting units and other appliances are also supplied, the rating of cord- and plug-connected room air
    conditioners must not exceed what percentage of the branch circuit rating?
    1. A50%
    2. B70%
    3. C80%
    4. D90%
  2. 2Which of the following principles states that heat is created in one place and carried to another by means of air
    or water?
    1. AHeat-transplant principle
    2. BHeat-movement principle
    3. CHeat-creation principle
    4. DHeat-transfer principle
  3. 3When the bimetal coil in a cooling-only thermostat heats up and unwinds, the mercury switch _____.
    1. Aopens its contacts and initiates defrost
    2. Bopens its contacts and stops the cooling system compressor
    3. Ccloses its contacts and shuts down the system
    4. Dcloses its contacts and starts the cooling system compressor
  4. 4In a cooling system, the heat absorbed by the refrigerant is transferred to the cooler outdoor air in a heat
    exchanger known as a(n) _____.
    1. Aexpansion device
    2. Bcompressor
    3. Ccondenser
    4. Devaporator
  5. 5Multi-stage thermostats provide energy savings by cycling on stages of heating or cooling based on _____.
    1. Ademand
    2. Bpump size
    3. Cpreset timers
    4. Dtime delay relays

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Beschreibung
General Electrician Quiz am 26408-14 HVAC Controls - Quiz, erstellt von hcannaday am 07/06/2016.
Sprache
English
Aufrufe
60
Schlagwörter
electriciangeneral
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