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 = 2(l - 1) - 2j n = 4(l - 1) - 3j n = 3(l - 1) - 2j n = (l -1) - j n = 2(l - 1) - 2j n = 4(l - 1) - 3j n = 3(l - 1) - 2j n = (l -1) - j ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In order to double the period of a simple pendulum, the length of the string should be None of these Quadrupled Doubled Halved None of these Quadrupled Doubled Halved ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A chain comprises of 5 links having 5 joints. Is it kinematic chain? No It is a marginal case Data are insufficient to determine it Yes No It is a marginal case Data are insufficient to determine it Yes ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The C.G. of a link in any mechanism would experience No acceleration Angular acceleration Linear acceleration Both angular and linear accelerations No acceleration Angular acceleration Linear acceleration Both angular and linear accelerations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Oldham’s coupling is an inversion of the kinematic chain used in Rotary engine Whitworth quick return mechanism Universal joint Elliptical trammels Rotary engine Whitworth quick return mechanism Universal joint Elliptical trammels ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve ANSWER DOWNLOAD EXAMIANS APP
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