Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing Is maximum at zero speed and decreases monotonically with increase in speed Is minimum at zero speed and increases monotonically with increase in speed Becomes minimum at an optimum speed and then increases with further increase in speed Remains constant at all speeds Is maximum at zero speed and decreases monotonically with increase in speed Is minimum at zero speed and increases monotonically with increase in speed Becomes minimum at an optimum speed and then increases with further increase in speed Remains constant at all speeds ANSWER DOWNLOAD EXAMIANS APP
Machine Design If threads on a bolt are left hand, threads on nut will be Right hand with same pitch Could be left or right hand Right hand with fine pitch Left hand with same pitch Right hand with same pitch Could be left or right hand Right hand with fine pitch Left hand with same pitch ANSWER DOWNLOAD EXAMIANS APP
Machine Design The square threads are usually found on Screw cutting lathes Feed mechanism of machine tools Spindles of bench vices Railway carriage couplings Screw cutting lathes Feed mechanism of machine tools Spindles of bench vices Railway carriage couplings ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of endurance limit in shear to the endurance limit in flexure is 0.33 0.55 0.4 0.5 0.33 0.55 0.4 0.5 ANSWER DOWNLOAD EXAMIANS APP
Machine Design Slenderness ratio is the ratio of Effective length of column to least radius of gyration of the column Maximum size of column to minimum size of column Effective length of column to width of column Width of column to depth of column Effective length of column to least radius of gyration of the column Maximum size of column to minimum size of column Effective length of column to width of column Width of column to depth of column ANSWER DOWNLOAD EXAMIANS APP
Machine Design A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be 3.5 3.0 2.8 2.5 3.5 3.0 2.8 2.5 ANSWER DOWNLOAD EXAMIANS APP
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