Theory of Machine The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is (3/4) μ W R cosecα μ W R cosecα (1/2) μ W R cosecα (2/3) μ W R cosecα (3/4) μ W R cosecα μ W R cosecα (1/2) μ W R cosecα (2/3) μ W R cosecα ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the center of drum, and n = Number of blocks) T₁/T₂ = μ. θ. n T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n T₁/T₂ = (μ θ)n T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n T₁/T₂ = μ. θ. n T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n T₁/T₂ = (μ θ)n T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If some links are connected such that motion between them can take place in more than one direction, it is called Incompletely constrained motion Successfully constrained motion Partially constrained motion Completely constrained motion Incompletely constrained motion Successfully constrained motion Partially constrained motion Completely constrained motion 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 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) P = W tan(α + φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone) (2/3) μ W R cosecα μ W R cosecα (1/2) μ W R cosecα (3/4) μ W R cosecα (2/3) μ W R cosecα μ W R cosecα (1/2) μ W R cosecα (3/4) μ W R cosecα ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is (1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosec α (r₁ + r₂) (2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3).μ W cosec α (r₁ + r₂) (1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosec α (r₁ + r₂) (2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3).μ W cosec α (r₁ + r₂) ANSWER DOWNLOAD EXAMIANS APP
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