Machine Design The included angle in unified of American National threads is 47° 55° 29° 60° 47° 55° 29° 60° ANSWER DOWNLOAD EXAMIANS APP
Machine Design A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be 3.5 3 2.5 2.8 3.5 3 2.5 2.8 ANSWER DOWNLOAD EXAMIANS APP
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 45° - φ/2 90° - φ 45° + φ/2 45° - φ 45° - φ/2 90° - φ 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design In case of pressure vessels having closed ends, the fluid pressure induces Shear stress None of these Circumferential stress Longitudinal stress Shear stress None of these Circumferential stress Longitudinal stress ANSWER DOWNLOAD EXAMIANS APP
Machine Design For tight leakage joints, following type of thread is best suited Metric Buttress Square NPT (national pipe threads). Metric Buttress Square NPT (national pipe threads). ANSWER DOWNLOAD EXAMIANS APP
Machine Design If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to 0.5 0.2 0.25 0.6 0.5 0.2 0.25 0.6 ANSWER DOWNLOAD EXAMIANS APP
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