____________________ is a flat plate or base of insulating material containing a pattern of conducting material and becomes an electrical circuit when components are attached.
Fill in the blank(s) with the appropriate word(s).
printed circuit board (PCB)
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If the speed of a blower used to move air through a duct is decreased, the horsepower requirement of the motor _____.
a. is increased b. remains the same c. is decreased d. is modulated
What technique do Reed–Solomon (RS) codes employ to enable the system to correct multiple data-bit errors?
A. Aliasing B. Amplitude companding C. Natural sampling D. Interleaving
The flame rod in the direct-spark ignition system ________
A) detects the main flame and pilot flame B) detects only the main flame C) detects only the pilot flame
When installing a double riser in a commercial refrigeration system, which of the following statements is true?
A) The combined areas of the risers should be greater than the area of the suction line. B) The combined areas of the risers should be less than the area of the suction line. C) The combined areas of the risers should be equal to the area of the suction line. D) Both of the risers should be the same size.