When the velocity of the air moving over an evaporator is slow, the "air film" acts as an insulator and slows the rate of heat exchange.
Answer the following statement true (T) or false (F)
True
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Describe the construction and operation of a vacuum circuit breaker.
What will be an ideal response?
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The component labeled 7 in Figure 1 is a(n) _____.
a. end seal
b. power connection
c. splice/tee connection
d. thermostat
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In refrigeration and air conditioning, switches are normally wired:
A) In either series or parallel with the load they control. B) In series with the load they control. C) In parallel with the load they control. D) In parallel with the power supply.
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Secondary control points are usually established on the job site by _____
a. utility crews b. grading contractors c. carpenters d. inspectors
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