Theory of Machine Higher pairs are those which have Surface contact between the two elements when in motion Elements of pairs not held together mechanically Point or line contact between the two elements when in motion Two elements that permit relative motion Surface contact between the two elements when in motion Elements of pairs not held together mechanically Point or line contact between the two elements when in motion Two elements that permit relative motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Pitch point on a cam is The point on cam pitch curve having the maximum pressure angle Any point on pitch curve The point on cam pitch curve having the minimum pressure angle Any point on pitch circle The point on cam pitch curve having the maximum pressure angle Any point on pitch curve The point on cam pitch curve having the minimum pressure angle Any point on pitch circle ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the crank is at the outer dead centre, in a reciprocating steam engine, then the acceleration of the piston will be ω² r {(n + 1)/n} ω² r {(n - 1)/n} ω² r {n/(n + 1)} ω² r {n/(n - 1)} ω² r {(n + 1)/n} ω² r {(n - 1)/n} ω² r {n/(n + 1)} ω² r {n/(n - 1)} ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction) P = W tan(α - φ) P = W cos(α + φ) P = W tan(α + φ) P = W tan(φ - α) P = W tan(α - φ) P = W cos(α + φ) P = W tan(α + φ) P = W tan(φ - α) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by μ₁ = μ/cos β μ₁ = μ sin β μ₁ = μ cos β μ₁ = μ/sin β μ₁ = μ/cos β μ₁ = μ sin β μ₁ = μ cos β μ₁ = μ/sin β ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than 2 0.5 1 0.25 2 0.5 1 0.25 ANSWER DOWNLOAD EXAMIANS APP
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