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 90° - φ 45° - φ 45° - φ/2 45° + φ/2 90° - φ 45° - φ 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The arms of the pulleys for flat belt drive have Major axis twice the minor axis All the three characteristics Major axis in plane of rotation Elliptical cross-section Major axis twice the minor axis All the three characteristics Major axis in plane of rotation Elliptical cross-section ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is Smaller Larger/smaller depending on diameter of spring coil Larger Equal Smaller Larger/smaller depending on diameter of spring coil Larger Equal ANSWER DOWNLOAD EXAMIANS APP
Machine Design A connecting rod should be Any one of the above Strong in buckling about Y-axis Strong in buckling about X-axis Equally strong in buckling about X-axis and Y-axis Any one of the above Strong in buckling about Y-axis Strong in buckling about X-axis Equally strong in buckling about X-axis and Y-axis ANSWER DOWNLOAD EXAMIANS APP
Machine Design Basic hole is one Does not exist Whose lower as well as upper deviations are zero Whose upper deviation is zero Whose lower deviation is zero Does not exist Whose lower as well as upper deviations are zero Whose upper deviation is zero Whose lower deviation is zero ANSWER DOWNLOAD EXAMIANS APP
Machine Design A key way lowers Both the strength and rigidity of the shaft The strength of the shaft The rigidity of the shaft The ductility of the shaft Both the strength and rigidity of the shaft The strength of the shaft The rigidity of the shaft The ductility of the shaft ANSWER DOWNLOAD EXAMIANS APP
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