The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank)

Theory of Machine
The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank)

ωr [sin θ + (sin 2θ/n)]

ω²r [sin θ + (sin 2θ/n)]

ωr [cos θ + (cos 2θ/n)]

ω²r [cos θ + (cos 2θ/n)]

ωr [sin θ + (sin 2θ/n)]

ω²r [sin θ + (sin 2θ/n)]

ωr [cos θ + (cos 2θ/n)]

ω²r [cos θ + (cos 2θ/n)]

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r² + R²) cosφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

[(r² + R²) cosφ]/2

[(r + R) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

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Theory of Machine
Sensitiveness of the governor is defined as the ratio of the

Mean speed to the minimum equilibrium speed

Mean speed to the maximum equilibrium speed

Sum of the maximum and minimum equilibrium speeds to the mean speed

Difference of the maximum and minimum equilibrium speeds to the mean speed

Mean speed to the minimum equilibrium speed

Mean speed to the maximum equilibrium speed

Sum of the maximum and minimum equilibrium speeds to the mean speed

Difference of the maximum and minimum equilibrium speeds to the mean speed

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Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosecφ

sinφ

cosφ

secφ

cosecφ

sinφ

cosφ

secφ

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Theory of Machine
A pulley and belt in a belt drive form a

Cylindrical pair

Turning pair

Sliding pair

Rolling pair

Cylindrical pair

Turning pair

Sliding pair

Rolling pair

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Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by

T = W.r tanφ

T = W.r tan(φ + α)

T = W.r tan(φ - α)

T = W.r tanα

T = W.r tanφ

T = W.r tan(φ + α)

T = W.r tan(φ - α)

T = W.r tanα

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Theory of Machine

Theory of Machine The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank)

Theory of Machine Sensitiveness of the governor is defined as the ratio of the

Theory of Machine For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

Theory of Machine A pulley and belt in a belt drive form a

Theory of Machine The factional torque for square thread at the mean radius r while raising load W is given by

Theory of Machine
The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank)

Theory of Machine
Sensitiveness of the governor is defined as the ratio of the

Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

Theory of Machine
A pulley and belt in a belt drive form a

Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by