Why does a heat pump need two metering devices?
A) Two metering devices provide increased refrigerant flow at low ambient temperatures in heat.
B) One metering device is used for first-stage heat and another for auxiliary heat.
C) One metering device is used for the refrigerant circuit and another for the heat strips.
D) One metering device is used for the cooling cycle and one for the heating cycle.
D
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Never assume that a ____________________ indicated means a part must be replaced.
Fill in the blank(s) with the appropriate word(s).
____________ mandates training in environmental control rules and regulations.
a. OSHA b. NOAA c. EPA d. HHS
What standard provides a short-range communication link between peripheral devices and a computer, typically 10 cm to 10 m apart.
A. 802.11a B. 802.11b C. 802.11g D. Bluetooth
Design a Colpitts oscillator that will operate at 50 kHz.
What will be an ideal response?