The viscosity of a fluid is to be measured by a viscometer constructed of two 80-cm-long concentric cylinders. the outer diameter of the inner cylinder is 15 cm, and the gap between the two cylinders is 1 mm. the inner cylinder is rotated at 300 rpm, and the torque is measured to be 0.8 n·m. determine the viscosity of the fluid.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

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.