Which of the below are inversions of slider crank mechanism?<br/>1. Oscillating cylinder engine mechanism<br/>2. Toggle mechanism<br/>3. Radial cylinder engine mechanism<br/>4. Quick return mechanism

Theory of Machine
Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

1, 2 and 3

2, 3 and 4

1, 3 and 4

1, 2 and 4

1, 2 and 3

2, 3 and 4

1, 3 and 4

1, 2 and 4

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Theory of Machine
Which of the following property of the instantaneous center is correct?

A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.

The two rigid links have no linear velocity relative to each other at the instantaneous centre.

The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.

All of these

A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.

The two rigid links have no linear velocity relative to each other at the instantaneous centre.

The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.

All of these

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Theory of Machine
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

To raise the nose and dip the tail

To dip the nose and raise the tail

To dip the nose and tail

To raise the nose and tail

To raise the nose and dip the tail

To dip the nose and raise the tail

To dip the nose and tail

To raise the nose and tail

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

None of these

Body contact

Line or point contact

Surface contact

None of these

Body contact

Line or point contact

Surface contact

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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 (cos 2θ/n)

m.ω².r sinθ

m.ω².r (sin 2θ/n)

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r sinθ

m.ω².r (sin 2θ/n)

m.ω².r cosθ

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Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

tanα = c/2b

sinα = b/c

cotα = c/2b

cosα = c/b

tanα = c/2b

sinα = b/c

cotα = c/2b

cosα = c/b

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Theory of Machine

Theory of Machine Which of the below are inversions of slider crank mechanism?1. Oscillating cylinder engine mechanism2. Toggle mechanism3. Radial cylinder engine mechanism4. Quick return mechanism

Theory of Machine Which of the following property of the instantaneous center is correct?

Theory of Machine The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

Theory of Machine When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Theory of Machine The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

Theory of Machine
Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

Theory of Machine
Which of the following property of the instantaneous center is correct?

Theory of Machine
The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)