A ____ permits voltage to be stepped up or down.
a. resistor
b. transformer
c. capacitor
d. battery
b. transformer
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Explain the purposes of the three surety bonds used in a typical building project, and the stages at which they are provided.
What will be an ideal response?
Which of the following is true of FCA welding?
A. It produces little ultraviolet light. B. Forced ventilation and possibly a respirator must be used. C. Special protective clothing is not necessary. D. It produces very little fumes.
In addition to the standard contacts, a starter may be provided with externally attached auxiliary contacts, sometimes called ____________________.
Fill in the blank(s) with the appropriate word(s).
The most common types of defrost for commercial refrigeration evaporators are:
A) Electric and hot-gas defrost. B) Reverse cycle and air defrost. C) Mechanical and hydraulic. D) Inductive and ultrasonic defrost.