A heat pump defrost control must do three things: Turn on auxiliary heat, turn off the condenser fan motor, and:
A) Turn off the compressor. B) Deactivate the thermostat.
C) Turn off the indoor blower fan. D) Shift the reversing valve from heat to cool.
D
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A new brake and electric contact cleaner product is being introduced in your shop. What should you do before using this product?
A. Let someone else try it first, if they do not experience any health problems then it must be safe. B. Ignite a small sample of the product to determine if it is flammable. C. Smell a small sample of the product to see if it seems safe to use. D. Consult the MSDS for the product.
Name two examples of applications that utilize DC series motors.
What will be an ideal response?
A pulling line is usually made of _____.
a. stranded wire b. wire rope c. steel tape d. nylon or other synthetic
What is meant by the term wild AC?
What will be an ideal response?