The following data is given for a 360o hydrodynamic bearing : Lubricant: SAE 30 with u...

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The following data is given for a 360o hydrodynamic bearing : Lubricant: SAE 30 with u = 20 MPa.s, p = 861 kg/m and C = 1760 J/kgC Journal speed= 30 rev/s, Radial load = 2.5 kN, Radius of the journal = 20 mm, Radial clearance = 0.032 mm, Length of the bearing = 40 mm, Temperature raise variable = 16. 15. What is the Sommerfield Number? (a) 0.25 (b) 0.15 (c) 0.30 (d) 0.45 16. Heat generated in bearing is (a) 19.5 W (c) 48.5 W (b) 38.33 W (d) 111.3 W The following data is given for a 360o hydrodynamic bearing : Lubricant: SAE 30 with u = 20 MPa.s, p = 861 kg/m and C = 1760 J/kgC Journal speed= 30 rev/s, Radial load = 2.5 kN, Radius of the journal = 20 mm, Radial clearance = 0.032 mm, Length of the bearing = 40 mm, Temperature raise variable = 16. 15. What is the Sommerfield Number? (a) 0.25 (b) 0.15 (c) 0.30 (d) 0.45 16. Heat generated in bearing is (a) 19.5 W (c) 48.5 W (b) 38.33 W (d) 111.3 W

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