Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing Becomes minimum at an optimum speed and then increases with further increase in speed Is minimum at zero speed and increases monotonically with increase in speed Is maximum at zero speed and decreases monotonically with increase in speed Remains constant at all speeds Becomes minimum at an optimum speed and then increases with further increase in speed Is minimum at zero speed and increases monotonically with increase in speed Is maximum at zero speed and decreases monotonically with increase in speed Remains constant at all speeds ANSWER DOWNLOAD EXAMIANS APP
Machine Design While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as Both the ends hinged One end fixed and the other end free Both the ends fixed One end fixed and the other end hinged Both the ends hinged One end fixed and the other end free Both the ends fixed One end fixed and the other end hinged ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be 3F/2bh F/bh 4F/bh 2F/bh 3F/2bh F/bh 4F/bh 2F/bh ANSWER DOWNLOAD EXAMIANS APP
Machine Design The face of the tooth is the Surface of the tooth above the pitch surface Width of the tooth measured along the pitch circle Surface of the top of the tooth Surface of the tooth below the pitch surface Surface of the tooth above the pitch surface Width of the tooth measured along the pitch circle Surface of the top of the tooth Surface of the tooth below the pitch surface ANSWER DOWNLOAD EXAMIANS APP
Machine Design In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft) 3.5 d 2d + 20 mm d + 17 mm 2d + 13 mm 3.5 d 2d + 20 mm d + 17 mm 2d + 13 mm ANSWER DOWNLOAD EXAMIANS APP
Machine Design The connecting rod bolts are tightened up with initial tension greater than the external load so that Bolts are weakest elements Bolts will not loosen during service The resultant load on the bolt would not be affected by the external cyclic load Joint may not open up Bolts are weakest elements Bolts will not loosen during service The resultant load on the bolt would not be affected by the external cyclic load Joint may not open up ANSWER DOWNLOAD EXAMIANS APP
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