Machine Design The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given byWhere m = mass of belt per meter (kg/m)v = belt velocity (m/s)f = coefficient of frictiona = angle of wrap (radians) (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 (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design In oilness bearings Grease required to be applied after some intervals Do not require external supply of lubricant The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal Grease required to be applied after some intervals Do not require external supply of lubricant The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal ANSWER DOWNLOAD EXAMIANS APP
Machine Design Guest's theory of failure is applicable for following type of materials Elastic Plastic Brittle Ductile Elastic Plastic Brittle Ductile ANSWER DOWNLOAD EXAMIANS APP
Machine Design The bearings of heavy series have capacity __________ over the medium series. 20 to 30% 30 to 40% 40 to 50% 10 to 20% 20 to 30% 30 to 40% 40 to 50% 10 to 20% ANSWER DOWNLOAD EXAMIANS APP
Machine Design The creep in the belt is due to Stresses beyond elastic limit of belt material Effect of temperature on belt Unequal extensions in the belt due to tight and slack side tensions Material of belt Stresses beyond elastic limit of belt material Effect of temperature on belt Unequal extensions in the belt due to tight and slack side tensions Material of belt ANSWER DOWNLOAD EXAMIANS APP
Machine Design The maximum efficiency of a square threaded screw is (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + cosφ) (1 - sinφ)/ (1 + sinφ) (1 + cosφ)/ (1 - sinφ) (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + cosφ) (1 - sinφ)/ (1 + sinφ) (1 + cosφ)/ (1 - sinφ) ANSWER DOWNLOAD EXAMIANS APP
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