Theory of Machine The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is 2 4 3 1 2 4 3 1 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become 2 fn fn/2 4 fn 8 fn 2 fn fn/2 4 fn 8 fn ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve) M/(m + M) (m + M)/M (m + M)/m m/(m + M) M/(m + M) (m + M)/M (m + M)/m m/(m + M) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If two moving elements have surface contact in motion, such pair is known as Higher pair Sliding pair Surface pair Rolling pair Higher pair Sliding pair Surface pair Rolling pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where l = Number of links, and j = Number of binary joints) n = 3(l - 1) - 2j n = (l -1) - j n = 4(l - 1) - 3j n = 2(l - 1) - 2j n = 3(l - 1) - 2j n = (l -1) - j n = 4(l - 1) - 3j n = 2(l - 1) - 2j ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The minimum periodic time of a compound pendulum is (1/2π). √(kG/g) 2π. √(kG/g) (1/2π). √(2kG/g) 2π. √(2kG/g) (1/2π). √(kG/g) 2π. √(kG/g) (1/2π). √(2kG/g) 2π. √(2kG/g) ANSWER DOWNLOAD EXAMIANS APP
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