Machine Design The included angle in unified of American National threads is 47° 55° 60° 29° 47° 55° 60° 29° 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 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the screw in a mechanical screw jack rotates, the load kept on the top of it moves Axially downwards Axially upwards Axially upwards or downwards None of these Axially downwards Axially upwards Axially upwards or downwards None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The anti-friction bearings Have low starting and low running friction at moderate speeds All of these Can carry both radial and thrust loads Have high initial cost Have low starting and low running friction at moderate speeds All of these Can carry both radial and thrust loads Have high initial cost ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rivet head used for boiler plate riveting is usually Conical head Snap head Counter sunk head Pan Head Conical head Snap head Counter sunk head Pan Head ANSWER DOWNLOAD EXAMIANS APP
Machine Design For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately 0.8 times 0.4 times 0.6 times 0.7 times 0.8 times 0.4 times 0.6 times 0.7 times ANSWER DOWNLOAD EXAMIANS APP
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