Why is elevator technician a highly paid occupation? (select all that apply.)

it has considerable status.
it requires sophisticated knowledge.
it is responsible for maintaining safety operations.
it often requires an on-call response.
it requires a bachelor’s degree.

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.