Theory of Machine Hammer blow Varies inversely with the square of the speed Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses. Varies as the square root of the speed Varies inversely with the square of the speed Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses. Varies as the square root of the speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing) r cosφ r tanφ r sinφ (r/2) cosφ r cosφ r tanφ r sinφ (r/2) cosφ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force is __________ the primary unbalanced force. One-half 1/n times Two-third n times One-half 1/n times Two-third n times ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a mechanism, the fixed instantaneous centers are those centers which Remain in the same place for all configurations of the mechanism Vary with the configuration of the mechanism None of the listed here Moves as the mechanism moves, but joints are of permanent nature Remain in the same place for all configurations of the mechanism Vary with the configuration of the mechanism None of the listed here Moves as the mechanism moves, but joints are of permanent nature ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be ω² r {(n + 1)/n} ω² r {n/(n + 1)} ω² r {n/(n - 1)} ω² r {(n - 1)/n} ω² r {(n + 1)/n} ω² r {n/(n + 1)} ω² r {n/(n - 1)} ω² r {(n - 1)/n} ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is found unstable. It can be made stable by Increasing the spring stiffness Increasing the ball mass Decreasing the ball mass Decreasing the spring stiffness Increasing the spring stiffness Increasing the ball mass Decreasing the ball mass Decreasing the spring stiffness ANSWER DOWNLOAD EXAMIANS APP
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