Machine Design In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be 17 15 21 25 17 15 21 25 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rolling contact bearings as compared to sliding contact bearings have Low starting and low running friction except at very high speeds Accuracy of shaft alignment All of these Small overall dimensions Low starting and low running friction except at very high speeds Accuracy of shaft alignment All of these Small overall dimensions ANSWER DOWNLOAD EXAMIANS APP
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) = e–ᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design The coefficient of friction in belt drive depends upon Materials of belt and pulley Material of belt Belt velocity Material of pulley Materials of belt and pulley Material of belt Belt velocity Material of pulley ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity of sliding __________ the distance of the point of contact from the pitch point. Is equal to cos φ multiplied by Does not depend upon Is directly proportional to Is inversely proportional to Is equal to cos φ multiplied by Does not depend upon Is directly proportional to Is inversely proportional to ANSWER DOWNLOAD EXAMIANS APP
Machine Design Stress concentration is caused due to Abrupt change of section All of these Pitting at points or areas at which loads on a member are applied Variation in properties of material from point to point in a member Abrupt change of section All of these Pitting at points or areas at which loads on a member are applied Variation in properties of material from point to point in a member ANSWER DOWNLOAD EXAMIANS APP
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