A motor supplies 100 horsepower (hp) to a shaft which drives a propeller blade. The shaft rotates in a bearing that is under-lubricated, and thus the shaft experiences significant friction while rotating in this bearing during operation. In this case, it is reasonable to assume that the power input to the propeller is equal to the power output from the motor. a. true
b. false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?