The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

Theory of Machine
The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r sinθ

m.ω².r (cos 2θ/n)

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r sinθ

m.ω².r (cos 2θ/n)

m.ω².r (sin 2θ/n)

m.ω².r cosθ

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Wears rapidly

Difficult to manufacture

Both (A) and (B) above

Bulky

Wears rapidly

Difficult to manufacture

Both (A) and (B) above

Bulky

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Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Two lower pairs and two additional links

Two lower pairs and one additional link

One lower pair and two additional links

Any one of these

Two lower pairs and two additional links

Two lower pairs and one additional link

One lower pair and two additional links

Any one of these

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Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

None of these

Minimum

Zero

Maximum

None of these

Minimum

Zero

Maximum

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Theory of Machine
When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Minimum

None of these

Zero

Maximum

Minimum

None of these

Zero

Maximum

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ + r₂). (1 + cos² θ)

ω². (r₁ - r₂). (1 - sin² θ)

ω². (r₁ r₂). (1 - cos² θ)

ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]

ω². (r₁ + r₂). (1 + cos² θ)

ω². (r₁ - r₂). (1 - sin² θ)

ω². (r₁ r₂). (1 - cos² θ)

ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]

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Theory of Machine

Theory of Machine The main disadvantage of the sliding pair is that it is

Theory of Machine The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Theory of Machine When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

Theory of Machine When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Theory of Machine The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

Theory of Machine
The main disadvantage of the sliding pair is that it is

Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

Theory of Machine
When brakes are applied to all the four wheels of a moving car, the distance traveled by the car before it is brought to rest, will be

Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by