Machine Design In hydrodynamic bearings Do not require external supply of lubricant Grease is used for lubrication The oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Do not require external supply of lubricant Grease is used for lubrication The oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure ANSWER DOWNLOAD EXAMIANS APP
Machine Design For general industrial machinery, the ratio of the length of journal to its diameter is taken as 3 to 5 1 to 2 5 to 10 0.5 to 1 3 to 5 1 to 2 5 to 10 0.5 to 1 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given by Where m = mass of belt per meter (kg/m) v = belt velocity (m/s) f = coefficient of friction a = angle of wrap (radians) (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = e–ᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design The load cup of a screw jack is made separate from the head of the spindle to Prevent the rotation of load being lifted Enhance the load carrying capacity of the jack Reduce the effort needed for lifting the working load Reduce the value of frictional torque Prevent the rotation of load being lifted Enhance the load carrying capacity of the jack Reduce the effort needed for lifting the working load Reduce the value of frictional torque ANSWER DOWNLOAD EXAMIANS APP
Machine Design The washer is generally specified by its Thickness Outer diameter Hole diameter Mean diameter Thickness Outer diameter Hole diameter Mean diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design A column of length l is fixed at both ends. The equivalent length of the column is 2 l l/2 l l/√2 2 l l/2 l l/√2 ANSWER DOWNLOAD EXAMIANS APP
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