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)

ω²r [cos θ + (cos 2θ/n)]

ωr [sin θ + (sin 2θ/n)]

ωr [cos θ + (cos 2θ/n)]

ω²r [sin θ + (sin 2θ/n)]

ω²r [cos θ + (cos 2θ/n)]

ωr [sin θ + (sin 2θ/n)]

ωr [cos θ + (cos 2θ/n)]

ω²r [sin θ + (sin 2θ/n)]

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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/(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}

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Theory of Machine
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Spherical pair

Rolling pair

Sliding pair

Turning pair

Spherical pair

Rolling pair

Sliding pair

Turning pair

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Theory of Machine
The frequency of oscillation of a torsional pendulum is

r/2πk. √(g/l)

2πr/k. √(g/l)

r/2πk. √(l/g)

2πk/r. √(g/l)

r/2πk. √(g/l)

2πr/k. √(g/l)

r/2πk. √(l/g)

2πk/r. √(g/l)

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Theory of Machine
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

10°-15°

25°-30°

30°-40°

15°-25°

10°-15°

25°-30°

30°-40°

15°-25°

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

μ W R

(3/4) μ W R

(2/3) μ W R

(1/2) μ W R

μ W R

(3/4) μ W R

(2/3) μ W R

(1/2) μ W R

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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 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 The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Theory of Machine The frequency of oscillation of a torsional pendulum is

Theory of Machine In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

Theory of Machine The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

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
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
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as

Theory of Machine
The frequency of oscillation of a torsional pendulum is

Theory of Machine
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

Theory of Machine
The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)