Most modern residential blower motors are of which type?

A. direct drive
B. belt drive
C. neither a nor b
D. both a and b


Answer: A

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The edge weld symbol is particularly used for ____ joinery.

A. sheet metal B. plate metal C. pipe D. billet

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Two-dimensional Poisson process. The number of plants of a certain species in a certain forest has a Poisson distribution with mean 10 plants per acre. The number of plants in T acres therefore has a Poisson distribution with mean 10T.

a. What is the probability that there will be exactly 18 plants in a two-acre region?
b. What is the probability that there will be exactly 12 plants in a circle with radius 100 ft? (1 acre = 43,560 .)
c. The number of plants of a different type follows a Poisson distribution with mean ? plants per acre, where ? is unknown. A total of 5 plants are counted in a 0.1 acre area. Estimate ?. and find the uncertainty in the estimate.

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Which of these is (are) a main function of tires?

A) Provide friction (traction) between the vehicle and the road B) Serve as shock absorbers to cushion the vehicle ride C) Both A and B D) Neither A nor B

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Determine the output frequency for a binary counter that contains twelve flip-flops with an input clock frequency of 20.48 MHz

A) 15 kHz B) 30.24 kHz C) 5 kHz D) 10.24 kHz

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