Explain the main reasons why AFC systems fell out of favor.
What will be an ideal response?
One of the main reasons why AFC systems fell out of favor was because their life span was a relatively short 5,000 hours. This was acceptable in the main application of the time, spaceships, but became unacceptable when the technology began to move to more commercial applications where 30,000 to 50,000 hours was expected. In addition, AFC systems used in the space program in particular were seen to have low power densities (although they have high efficiencies) and experienced rapid poisoning of the alkaline electrolyte when in operation.
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The differential in speed from no load to full load is referred to as ____________________.
Fill in the blank(s) with the appropriate word(s).
One drawer in a dresser contains 8 blue socks and 6 white socks. A second drawer contains 4 blue socks and 2 white socks. One sock is chosen from each drawer. What is the probability that they match?
What will be an ideal response?
In a series RL AC circuit the amount of lag is greater than 0° and less than 90°, and depends solely on the amount of ____________________ and inductive reactance in the circuit.
Fill in the blank(s) with the appropriate word(s).
The two methods used in product quality control are ____ testing.
A. mechanical and nondestructive B. destructive and visual inspection C. mechanized and destructive D. mechanical and destructive