Assume a solar cell produces 0.5 V at peak sunlight. If a total of 12 V needed, what is the minimum number of solar cells required and how must they be connected?
What will be an ideal response?
Number of cells = 12 V/0.5 V/cell = 24 cells connected in series.
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Why are dynamic compressors more commonly used than positive displacement compressors?
A. They are more efficient. B. Less energy is required. C. They have a smaller capacity. D. They require no maintenance.
Frogs undergo metamorphosis. Most species begin life as tadpoles resembling fish. Tadpoles breathe through gills, have a two-chambered heart, no limbs, and a tail designed for swimming. During metamorphosis, which of the following changes occur?
A. The heart changes to a three-chambered organ B. The gills are replaced by lungs C. Limbs grow and the tail is resorbed D. All of the above E. A and B above
Wire A has a diameter of 0.032 inches. Wire B has a diameter of 0.102 inches and an AWG rating of 10. Which of these is MOST likely to be the AWG rating of Wire A?
A) 12 ga. B) 14 ga. C) 5 ga. D) 20 ga.
The species in the Felis genus have the unique ability to:
A. roar B. purr C. scratch D. groom