Theory of Machine The dynamic friction is the friction experienced by a body, when the body Is in motion Is at rest None of these Just begins to slide over the surface of the other body Is in motion Is at rest None of these Just begins to slide over the surface of the other body ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed. Ratio Product Sum Difference Ratio Product Sum Difference 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 Have perfect balancing Minimize the effect of secondary forces To start the locomotive quickly Minimize the effect of primary forces Have perfect balancing Minimize the effect of secondary forces To start the locomotive quickly Minimize the effect of primary forces ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (sin 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The axis of precession is __________ to the plane in which the axis of spin is going to rotate. Perpendicular Both A and B Parallel None of these Perpendicular Both A and B Parallel None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called Coriolis component Radial component Tangential component None of these Coriolis component Radial component Tangential component None of these ANSWER DOWNLOAD EXAMIANS APP
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