Why should pliers NOT be used to tighten bolts and nuts?
A) They will round off the corners. B) They will overtighten the nut.
C) It is too difficult to get the pliers to fit the nut. D) They will strip the threads of the bolt.
A
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Technician A says a scan tool may be used to retrieve diagnostic trouble codes (DTCs) in a computer-controlled suspension system. Technician B says on OBD II equipped vehicles the scan tool is connected to a data link connector (DLC) under the dash. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Business index is the ratio of revenues to:
A. Unit cost B. Profits plus costs C. Price D. Expenditures plus assets
Solution 19.24 Calculate the expected value of the variable N in Problem 19.10.
Problem 19.10 Bob is working on two separate probability-related projects. The first involves the variable N, which is the number of consecutively filled bottles of an anticancer drug that weigh in above the weight specification limit. The variable N is described by the formula (0.5)N because each unit has a 50-50 chance of being below or above the limit. The second involves the battery life L, which varies between 2 and 5 months. The probability distribution is triangular with the mode at 5 months, which is the design life. Some batteries fail early, but 2 months is the smallest life experienced thus far. (a) Write out and plot the probability distributions and cumulative distributions for N and L for Bob. (b) Determine P(N = 1, 2, or 3) consecutive units above the weight limit.
Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.
A. slightly lower in an ac circuit B. reciprocally lower in a dc circuit C. slightly higher in an ac circuit D. reciprocally higher in a dc circuit