# Questions (235)

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Category: microelectronics
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Exercise 1-4.2 A telephone switching center survey indicates that one of four calls is a business call, that one-tenth of business calls are long distance, and one­ twentieth of nonbusiness calls are long distance. a) What is the probability that the...
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1-4.5 A company manufactures small electric motors having horse power ratings of 0.1, 0.5, or 1.0 horsepower and designed for operation with 120 V single-phase ac, 240 V single-phase ac, or 240 V three-phase ac. The motor types can be distinguished o...
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Exercise 1-4.1 a) A box contains 50 diodes of which 1 0 are known to be bad. A diode is selected at random. What is the probability that it is bad? b) If the first diode drawn from the box was good, what is the probability that a: second diode drawn ...
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Exercise 1 -5.2 Using the algebra of sets show that the following relations are true: a)" A u (A n B) = A b) AU (A n B) = A u B
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Exercise 1-5.2 Using the algebra of sets show that the following relations are true: a)" Au(AnB)=A b) AU(AnB)=AuB
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Exercise 1-5.1 If A and B are subsets of the same space, S, find a) (AnB)u(A-B) b) An(A-B) c) (AnB)n(BuA)
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Exercise 1-5.1 If A and B are subsets of the same space, S, find a) (A n B) u (A - B) b) An (A - B) c) (A n B) n (B u A)
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