Machine Design A screw is said to be over hauling screw, if the Efficiency of screw is 100% Friction angle is less than helix angle Friction angle is more than helix angle Friction angle is equal to helix angle Efficiency of screw is 100% Friction angle is less than helix angle Friction angle is more than helix angle Friction angle is equal to helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to(Where, Pc = tension in belt due to centrifugal force) 2 Pc 3 Pc Pc/3 1 Pc 2 Pc 3 Pc Pc/3 1 Pc ANSWER DOWNLOAD EXAMIANS APP
Machine Design The arms of the pulleys for flat belt drive have Major axis twice the minor axis Elliptical cross-section Major axis in plane of rotation All the three characteristics Major axis twice the minor axis Elliptical cross-section Major axis in plane of rotation All the three characteristics ANSWER DOWNLOAD EXAMIANS APP
Machine Design If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as T cosecφ T sec³φ T/sec³φ T sec²φ T cosecφ T sec³φ T/sec³φ T sec²φ ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be 70 to 83% 63 to 70% 80 to 90% 45 to 60% 70 to 83% 63 to 70% 80 to 90% 45 to 60% ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bolt Has both the ends threaded Has a head on one end and a nut fitted to the other Has head at one end and other end fits into a tapped hole in the other part to be joined Is provided with pointed threads Has both the ends threaded Has a head on one end and a nut fitted to the other Has head at one end and other end fits into a tapped hole in the other part to be joined Is provided with pointed threads ANSWER DOWNLOAD EXAMIANS APP
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