__________ controls are desirable for efficient system operation.
A) Dual-pressure
B) Electronic
C) High-pressure
D) Low-pressure
Correct Answer:
Verified
Q2: Sensing bulbs on thermostats are filled with
Q3: Which type of sensors do electronic thermostats
Q4: Low-voltage thermostats usually control which type of
Q5: It is possible to have a control
Q6: Cooling anticipators are wired in series with
Q8: Heating anticipators are wired in series with
Q9: A thermostat that can control multiple levels
Q10: How are control transformers rated?
A) volts
B) volt-amps
C)
Q11: Contactors are large relays and are used
Q12: An overload protector is usually wired in
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