Theory of Machine Torsional vibrations are said to occur when the particles of a body moves Parallel to its axis Perpendicular to its axis In a circle about its axis None of these Parallel to its axis Perpendicular to its axis In a circle about its axis None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to Minimize the effect of primary forces Minimize the effect of secondary forces To start the locomotive quickly Have perfect balancing Minimize the effect of primary forces Minimize the effect of secondary forces To start the locomotive quickly Have perfect balancing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force in a locomotive with two cylinders is given by (where c = Fraction of reciprocating parts per cylinder, m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, and θ = Angle of inclination of crank to the line of stroke) m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ m.ω².r sinθ m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ m.ω².r sinθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The total number of instantaneous centers for a mechanism consisting of n links are n/2 n n(n - 1)/2 n - 1 n/2 n n(n - 1)/2 n - 1 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time of one oscillation for a simple pendulum is (1/2π). √(g/l) (1/2π). √(l/g) 2π. √(g/l) 2π. √(l/g) (1/2π). √(g/l) (1/2π). √(l/g) 2π. √(g/l) 2π. √(l/g) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical) sinα = b/c tanα = c/2b cotα = c/2b cosα = c/b sinα = b/c tanα = c/2b cotα = c/2b cosα = c/b ANSWER DOWNLOAD EXAMIANS APP
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