The ____, being a semiconductor component, has an unlimited life span due to the absence of a filament, a cause of trouble in conventional lamps.
A. solar cell
B. photodiode
C. light-emitting diode
D. photo cell
Answer: C
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A simple capacity-control method that provides capacity steps of 25 percent, 50 percent, and 75 percent using a plug valve would be found on a _____.
a. scroll compressor b. hot-gas bypass setup c. screw compressor d. rotary compressor
List and describe the four categories of forest insect control measures
What will be an ideal response?
When selecting a metal to use for roofing panels that will be subjected to severe hailstorms, an important
consideration is the metal's _____. a. elasticity b. hardness c. ductility d. tensile strength
A 6-cell storage battery shows an average voltage of 1.76 volts per cell. What is the voltage of the battery?
A. 8.58 B. 9.52 C. 10.56 D. 11.54