Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 45° + φ/2 45° - φ/2 45° - φ 90° - φ 45° + φ/2 45° - φ/2 45° - φ 90° - φ ANSWER DOWNLOAD EXAMIANS APP
Machine Design Idler pulley is used for Changing the direction of motion of belt For applying tension Increasing velocity ratio All of these Changing the direction of motion of belt For applying tension Increasing velocity ratio All of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that It is subjected to a higher stress than the outer side It is subjected to a higher cyclic loading than the outer side It is more stretched than the outer side during the manufacturing process It has a lower curvature than the outer side It is subjected to a higher stress than the outer side It is subjected to a higher cyclic loading than the outer side It is more stretched than the outer side during the manufacturing process It has a lower curvature than the outer side ANSWER DOWNLOAD EXAMIANS APP
Machine Design Maximum principal stress theory is applicable for All of these Ductile materials Brittle materials Elastic materials All of these Ductile materials Brittle materials Elastic materials ANSWER DOWNLOAD EXAMIANS APP
Machine Design The sleeve or muff coupling is designed as a Thick cylinder Dun cylinder Hollow shaft Solid shaft Thick cylinder Dun cylinder Hollow shaft Solid shaft ANSWER DOWNLOAD EXAMIANS APP
Machine Design The process which improves the machinability of steels, but lowers the hardness and tensile strength is Spheroidising Normalising Process annealing Full annealing Spheroidising Normalising Process annealing Full annealing ANSWER DOWNLOAD EXAMIANS APP
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