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				| 1. | An oil of vicosity 7 poise is used for lubrication between shaft and sleeve. The diameter of shaft is 0.6 m and it rotates is 360 rpm. Calculate the power lost in oil for a sleeve length of 160mm. The thickness of oil film is 1.0mm | 
| A. | 25.31 kW | 
| B. | 50.62 kW | 
| C. | 37.97 kW | 
| D. | 12.65 kW | 
| Answer» B. 50.62 kW | |