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 centre of drum, and n = Number of blocks)

T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n

T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n

In a band and block brake, the ratio of tensions on tight side and sla

1.	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 centre of drum, and n = Number of blocks)
A.	T₁/T₂ = μθ × n
B.	T₁/T₂ = (μθ)n
C.	T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n
D.	T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n
Answer» E.

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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 centre of drum, and n = Number of blocks)

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