Theory of Machine If the opposite links of a four bar linkage are equal, the links will always form a Pentagon Parallelogram Triangle Rectangle Pentagon Parallelogram Triangle Rectangle ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Kinematic pairs are those which have Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to 90° and 180° 135° and 315° 270° and 360° 0° and 90° 90° and 180° 135° and 315° 270° and 360° 0° and 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ω = Angular velocity of the cam shaft) ω (r₁ r₂) cosθ ω (r₁ r₂) sinθ ω (r₁ + r₂) cosθ cosec2θ ω (r₁ + r₂) sinθ sec2θ ω (r₁ r₂) cosθ ω (r₁ r₂) sinθ ω (r₁ + r₂) cosθ cosec2θ ω (r₁ + r₂) sinθ sec2θ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Kinematic pairs are those which have two elements that Have surface contact Permit relative motion Have line contact Are held together Have surface contact Permit relative motion Have line contact Are held together ANSWER DOWNLOAD EXAMIANS APP
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