Machine Design The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils) Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n 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 2.8 2.5 3 3.5 2.8 2.5 3 3.5 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The radial distance from the __________ to the clearance circle is called working depth. Addendum circle Pitch circle None of these Dedendum circle Addendum circle Pitch circle None of these Dedendum circle ANSWER DOWNLOAD EXAMIANS APP
Machine Design Coaxing is the procedure of increasing Metal resistance to corrosion by coating Metal strength by cycling Fatigue limit by over-stressing the metal by successively increasing loadings Metal hardness by surface treatment Metal resistance to corrosion by coating Metal strength by cycling Fatigue limit by over-stressing the metal by successively increasing loadings Metal hardness by surface treatment ANSWER DOWNLOAD EXAMIANS APP
Machine Design Screws used for power transmission should have Strong teeth Low efficiency High efficiency Very fine threads Strong teeth Low efficiency High efficiency Very fine threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following cotter joint will be used to connect strap end of a connecting rod? Gib and cotter joint Any one of these Sleeve and cotter joint Spigot and socket cotter joint Gib and cotter joint Any one of these Sleeve and cotter joint Spigot and socket cotter joint ANSWER DOWNLOAD EXAMIANS APP
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