Theory of Machine Crowning on pulleys helps For automatic adjustment of belt position so that belt runs centrally In decreasing the slip of the belt In increasing velocity ratio Increase belt and pulley life For automatic adjustment of belt position so that belt runs centrally In decreasing the slip of the belt In increasing velocity ratio Increase belt and pulley life 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 secondary forces Minimize the effect of primary forces Have perfect balancing To start the locomotive quickly Minimize the effect of secondary forces Minimize the effect of primary forces Have perfect balancing To start the locomotive quickly ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve) S₂/S₁ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₁/S₂ = r₁/r₂ S₂/S₁ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₁/S₂ = r₁/r₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be Unstable None of these Isochronous Stable Unstable None of these Isochronous Stable ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is Chain coupling Oldham's coupling Universal coupling Flexible coupling Chain coupling Oldham's coupling Universal coupling Flexible coupling ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB) ω × AB ω² × AB ω × (AB)² (ω × AB)² ω × AB ω² × AB ω × (AB)² (ω × AB)² ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS