Theory of Machine The contact ratio is given by (Length of path of recess)/(Circular pitch) (Length of the arc of contact)/(Circular pitch) (Length of the arc of approach)/cosφ (Length of the path of approach)/(Circular pitch) (Length of path of recess)/(Circular pitch) (Length of the arc of contact)/(Circular pitch) (Length of the arc of approach)/cosφ (Length of the path of approach)/(Circular pitch) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Oldham’s coupling is an inversion of the kinematic chain used in Whitworth quick return mechanism Rotary engine Elliptical trammels Universal joint Whitworth quick return mechanism Rotary engine Elliptical trammels Universal joint ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by ω(R - r₁) cosθ ωr₁ sinθ ω(R - r₁) sinθ ωR cosθ ω(R - r₁) cosθ ωr₁ sinθ ω(R - r₁) sinθ ωR cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Balancing of rotating and reciprocating parts of an engine is necessary when it runs at Moderate speed Highs peed Slow speed Any one of these Moderate speed Highs peed Slow speed Any one of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to D₂/D₁ D₁/D₂ D₁ D₁.D₂ D₂/D₁ D₁/D₂ D₁ D₁.D₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced force due to reciprocating masses Varies in direction but constant in magnitude Varies in magnitude and direction both Varies in magnitude but constant in direction Constant in magnitude and direction both Varies in direction but constant in magnitude Varies in magnitude and direction both Varies in magnitude but constant in direction Constant in magnitude and direction both ANSWER DOWNLOAD EXAMIANS APP
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