In an RC parallel circuit, ET = 240 V, R = 30 ?, and XC = 60 ?. What is the phase angle (angle theta)?
A. 26.57°
B. 30°
C. 63.43°
D. 90°
Answer: A
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Which of the following is electrically connected in series with the compressor electromagnetic clutch?
A. Ambient temperature switch B. Thermostatic switch C. Pressure cycling switch D. All of the above
The first fuel filter in the sock inside the fuel tank normally filters particles larger than ________
A) 70 to 100 microns B) 0.001 to 0.003 inches C) 10 to 20 microns D) 0.010 to 0.030 inches
Explain the effect that solenoid valves have in a water supply system.
What will be an ideal response?
A bi-flow thermostatic expansion valve:
A) Can be used with two different refrigerants by selecting the correct flow. B) Can be used with two different capacity units by selecting the correct flow. C) Allows refrigerant flow in both directions. D) Can be used for creating two stages of heating or cooling.