Machine Design A hot short metal is Ductile at high temperature Brittle when cold Brittle when hot Brittle under all conditions Ductile at high temperature Brittle when cold Brittle when hot Brittle under all conditions 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 3/ (3 + v) 0.75/ (0.75 + √v) 6/ (6 + v) 4.5/ (4.5 + v) 3/ (3 + v) 0.75/ (0.75 + √v) 6/ (6 + v) 4.5/ (4.5 + v) ANSWER DOWNLOAD EXAMIANS APP
Machine Design A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be 4 τ τ/2 2 τ τ 4 τ τ/2 2 τ τ ANSWER DOWNLOAD EXAMIANS APP
Machine Design For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be 10 6 4 8 10 6 4 8 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The building up of worn and undersized parts, subjected to repeated loads by electroplating is Cheapest method Has no effect as regards fatigue strength Extremely hazardous Best method Cheapest method Has no effect as regards fatigue strength Extremely hazardous Best method ANSWER DOWNLOAD EXAMIANS APP
Machine Design The connecting rod bolts are tightened up so that tightening stress Is about yield point divided by safety factor Is just sufficient to hold parts together Approaches yield point Is 50% of yield point Is about yield point divided by safety factor Is just sufficient to hold parts together Approaches yield point Is 50% of yield point ANSWER DOWNLOAD EXAMIANS APP
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