How does an air sensing tstat keep frost from building up on a medium temperature evaporator?
a. It has a wide temperature swing to allow enough off time to defrost.
b. It has a narrow temperature swing or differential to prevent frost buildup.
c. The tstat won’t start the compressor until the frost has melted off the evap.
a. It has a wide temperature swing to allow enough off time to defrost.
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What will be an ideal response?
AC generators work by:
A) By spinning a loop of wire at high rates of speed until the electrons start to move. B) Rubbing two statically charged materials together. C) Turning a coil of wire through a magnetic field. D) A chemical reaction.
What type of effect does noise have on a signal?
A. Harmonic B. Distorted C. Additive D. Amplified
What are some examples of thyristors?
What will be an ideal response?