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) Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 4D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane. Thrice Half None of these Twice Thrice Half None of these Twice ANSWER DOWNLOAD EXAMIANS APP
Machine Design A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be (6V/ π)3 (6V/ π)1/2 (6V/ π)2 (6V/ π)1/3 (6V/ π)3 (6V/ π)1/2 (6V/ π)2 (6V/ π)1/3 ANSWER DOWNLOAD EXAMIANS APP
Machine Design Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material) p.d.σt p.t.σt (p - d) t.σt p.d.σt p.t.σt (p - d) t.σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design The square threads are usually found on Railway carriage couplings Feed mechanism of machine tools Screw cutting lathes Spindles of bench vices Railway carriage couplings Feed mechanism of machine tools Screw cutting lathes Spindles of bench vices ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that The tensile stresses are uniformly distributed over the section of the walls The effect of the restraining action of the heads at the end of the pressure vessel is neglected All of these The effect of curvature of the cylinder wall is neglected The tensile stresses are uniformly distributed over the section of the walls The effect of the restraining action of the heads at the end of the pressure vessel is neglected All of these The effect of curvature of the cylinder wall is neglected ANSWER DOWNLOAD EXAMIANS APP
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