Machine Design Failure of a material is called fatigue when it fails At the yield point Below the yield point Below the elastic limit At the elastic limit At the yield point Below the yield point Below the elastic limit At the elastic limit ANSWER DOWNLOAD EXAMIANS APP
Machine Design The edges of a boiler plate are bevelled to an angle of 80° 45° 60° 30° 80° 45° 60° 30° ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to 6/ (6 + v) 3/ (3 + v) 4.5/ (4.5 + v) 0.75/ (0.75 + √v) 6/ (6 + v) 3/ (3 + v) 4.5/ (4.5 + v) 0.75/ (0.75 + √v) ANSWER DOWNLOAD EXAMIANS APP
Machine Design In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because The new belt will carry more than its share and result in short life New and old belts will cause vibrations Only one belt cannot be fitted with other used belts Belts are available in sets The new belt will carry more than its share and result in short life New and old belts will cause vibrations Only one belt cannot be fitted with other used belts Belts are available in sets ANSWER DOWNLOAD EXAMIANS APP
Machine Design The fatigue life of a part can be improved by Coating Electroplating Shot peening Polishing Coating Electroplating Shot peening Polishing ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value? Maximum strain energy theory Maximum shear stress theory Maximum distortion energy theory Maximum principal stress theory Maximum strain energy theory Maximum shear stress theory Maximum distortion energy theory Maximum principal stress theory ANSWER DOWNLOAD EXAMIANS APP