Theory of Machine The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove) secβ sinβ cosecβ cosβ secβ sinβ cosecβ cosβ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a screw jack, the effort required to lower the load W is given by P = W tan(α - φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α + φ) P = W tan(α - φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α + φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For the same lift and same angle of ascent, a smaller base circle will give There is no such relation with pressure angle A small value of pressure angle Something else A large value of pressure angle There is no such relation with pressure angle A small value of pressure angle Something else A large value of pressure angle ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a Higher pair Self-closed pair Lower pair Force-closed pair Higher pair Self-closed pair Lower pair Force-closed pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Pulley in a belt drive acts as Turning pair Rolling pair Cylindrical pair Sliding pair Turning pair Rolling pair Cylindrical pair Sliding pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The displacement of the reciprocating roller follower, when it has contact with the straight flanks of the tangent cam, is given by (where r₁ = Minimum radius of the cam, r₂ = Radius of the roller follower, and θ = Angle turned by the cam from the beginning of the follower displacement) (r₁ - r₂) (1 - cosθ) (r₁ + r₂) (1 + cosθ) (r₁ - r₂) [(1 - cosθ)/cosθ] (r₁ + r₂) [(1 - cosθ)/cosθ] (r₁ - r₂) (1 - cosθ) (r₁ + r₂) (1 + cosθ) (r₁ - r₂) [(1 - cosθ)/cosθ] (r₁ + r₂) [(1 - cosθ)/cosθ] ANSWER DOWNLOAD EXAMIANS APP
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