A group of engineers have an office pool for football games of their alma mater. The winner is the one that ends the season with the fewest demerits. Demerits are awarded after each game on the following basis: three demerits for each one point that one errs in guessing the correct difference in the final scores of the two teams; and one demerit for each point one is incorrect in the final score of each team. [For example: One engineer predicts the home team to win 14 to 7, but the final score is home team 10, visitors 21. Demerits = (11 + 7)3 + (14 ? 10) + (21 ? 7) = 72 demerits.] Draw a flowchart describing this pool.
What will be an ideal response?
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Nuclear power plants have redundant components in important systems to reduce the chance of catastrophic failure. Assume that a plant has two gauges to measure the level of coolant in the reactor core and that each gauge has probability 0.01 of failing. Assume that one potential cause of gauge failure is that the electric cables leading from the core to the control room where the gauges are located may burn up in a fire. Someone wishes to estimate the probability that both gauges fail, and makes the following calculation:
a. What assumption is being made in this calculation?
b. Explain why this assumption is probably not justified in the present case.
c. Is the probability of 0.0001 likely to be too high or too low? Explain.
The starting amperage of an electric motor is usually stated as the ____________________.
Fill in the blank(s) with the appropriate word(s).
PROBLEM 3.1 Determine the torque T that causes a maximum shearing stress of 70 MPa in the steel cylindrical shaft shown.
Newly placed conventional concrete must be kept moist for five to seven days so that it will _____
a. cure b. settle c. mature d. segregate