(a) Consider the non-lifting flow over a circular cylinder of a given radius withV[infinity]= 20 ft/s. IfV[infinity]is doubled, that is, V[infinity]= 40 ft/s, does the shape of the streamlines change? Explain.(b) Consider the lifting flow over a circular cylinder of a given radius with a given circulationΓ. IfV[infinity]is doubled, keeping the circulation the same, does the shape of the streamlineschange? Explain.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature