Machine Design The objective of 'crowning' of the flat pulleys of belt drive is to Prevent the belt from running off the pulley Prevent the belt joint from damaging the belt surface Increase the power transmission capacity Increase the belt velocity Prevent the belt from running off the pulley Prevent the belt joint from damaging the belt surface Increase the power transmission capacity Increase the belt velocity ANSWER DOWNLOAD EXAMIANS APP
Machine Design The connecting rod bolts are tightened up with initial tension greater than the external load so that Bolts will not loosen during service Joint may not open up The resultant load on the bolt would not be affected by the external cyclic load Bolts are weakest elements Bolts will not loosen during service Joint may not open up The resultant load on the bolt would not be affected by the external cyclic load Bolts are weakest elements ANSWER DOWNLOAD EXAMIANS APP
Machine Design The pitch diameter is the __________ diameter of an external or internal screw thread. Largest Effective None of these Smallest Largest Effective None of these Smallest ANSWER DOWNLOAD EXAMIANS APP
Machine Design Factor of safety for fatigue loading is the ratio of Young's modulus to the ultimate tensile strength Elastic limit to the working stress Endurance limit to the working stress Elastic limit to the yield point Young's modulus to the ultimate tensile strength Elastic limit to the working stress Endurance limit to the working stress Elastic limit to the yield point ANSWER DOWNLOAD EXAMIANS APP
Machine Design The objective of idler pulley in belt drive is to Increase the wrap angle and belt tension All the above objectives Increase the power transmission capacity Decrease the tendency of belt to slip Increase the wrap angle and belt tension All the above objectives Increase the power transmission capacity Decrease the tendency of belt to slip 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 1 Pc Pc/3 3 Pc 2 Pc 1 Pc Pc/3 3 Pc ANSWER DOWNLOAD EXAMIANS APP
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