Machine Design The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to 0.75/(0.75 + √v) 4.5/(4.5 + v) 3/(3 + v) 6/(6 + v) 0.75/(0.75 + √v) 4.5/(4.5 + v) 3/(3 + v) 6/(6 + v) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shock absorbing capacity of a bolt may be increased by Making the shank diameter equal to core diameter of thread Increasing its shank diameter Tightening the bolt properly Decreasing its shank diameter Making the shank diameter equal to core diameter of thread Increasing its shank diameter Tightening the bolt properly Decreasing its shank diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design In hydrodynamic bearings Grease is used for lubrication Do not require external supply of lubricant The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal Grease is used for lubrication Do not require external supply of lubricant The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal ANSWER DOWNLOAD EXAMIANS APP
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 maximum at zero speed and decreases monotonically with increase in speed Is minimum at zero speed and increases 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 maximum at zero speed and decreases monotonically with increase in speed Is minimum at zero speed and increases monotonically with increase in speed Remains constant at all speeds ANSWER DOWNLOAD EXAMIANS APP
Machine Design All stresses produced in a belt are Shear stresses Both tensile and compressive stresses Compressive stresses Tensile stresses Shear stresses Both tensile and compressive stresses Compressive stresses Tensile stresses ANSWER DOWNLOAD EXAMIANS APP
Machine Design The cam follower generally used in automobile engines is Spherical faced follower Roller follower Flat faced follower Knife edge follower Spherical faced follower Roller follower Flat faced follower Knife edge follower ANSWER DOWNLOAD EXAMIANS APP
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