PROBLEM 2.28 The length of the -in.-diameter steel wire CD has been adjusted so that with no load applied, a gap of exists between the end B of the rigid beam ACB and a contact point E. Knowing that determine where a 50-lb block should be placed on the beam in order to cause contact between B and E.
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Datums are not allowed for ____.
A. angularity B. parallelism C. profile of a surface D. cylindricity
Technician A says that the "W" in SAE 10W-40 stands for "weight." Technician B says that SA, or "nondetergent," oil should not be used in late-model automobiles. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
PROBLEM 3.72
One of two hollow drive shafts of a cruise ship is 125 ft long, and its outer and inner diameters are 16 in. and 8 in., respectively. The shaft is made of a steel for which ?all = 8500 psi and G = 11.2 × 106 psi. Knowing that the maximum speed of rotation of the shaft is 165 rpm, determine (a) the maximum power that can be transmitted by the one shaft to its propeller, (b) the corresponding angle of twist of the shaft.
What should you do to become familiar with the warnings and cautions associated with antilock brake systems?
A. Call the factory representative. B. Study the service manual for the type of brake system on which you are working. C. Ask someone in the shop. D. All of the above.