An electric motor drives a pump, which moves a liquid fluorocarbon (benzene) from a pipe with an inlet diameter of 13 cm into a pipe with an outlet diameter of 8 cm at a rate of 0.15 m3/s . the motor uses 200 kw of electric power. the specific volume of the fluorocarbon is v=0.0012 m3/kg. the pressure rise across the pump is 510 kpa. determine the efficiency of the pump and motor.

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.