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)

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

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

700°K

600°K

625°K

650°K

700°K

600°K

625°K

650°K

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Theory of Machine
When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.

None of the listed here

Smaller

Larger

Smaller OR Larger

None of the listed here

Smaller

Larger

Smaller OR Larger

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Theory of Machine
Elements of pairs held together mechanically is known as

Closed pair

Mechanical pair

Open pair

Rolling pair

Closed pair

Mechanical pair

Open pair

Rolling pair

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Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

None of these

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

The algebraic sum of the primary forces must be equal to zero

Both (A) and (B)

None of these

The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

The algebraic sum of the primary forces must be equal to zero

Both (A) and (B)

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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/(n + 1)}

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)}

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Theory of Machine

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)

Theory of Machine An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

Theory of Machine When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.

Theory of Machine Elements of pairs held together mechanically is known as

Theory of Machine In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

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

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)

Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

Theory of Machine
When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.

Theory of Machine
Elements of pairs held together mechanically is known as

Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

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