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Theory of Machine

Theory of Machine
The approximate straight line mechanism is a

6 bar linkage
8 bar linkage
3 bar linkage
Four bar linkage

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Theory of Machine
A spring controlled governor is said to be isochronous when the controlling force

Remain constant for all radii of rotation
Increases as the radius of rotation increases
Increases as the radius of rotation decreases
Decreases as the radius of rotation increases

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Theory of Machine
The cam and follower is an example of

Sliding pair
Lower pair
Higher pair
Rolling pair

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Theory of Machine
In which of the following type of gear train the first gear and the last gear are co-axial.

Simple gear train
Reverted gear train
None of the listed here
Compound gear train

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Theory of Machine
The velocity of sliding of meshing gear teeth is (Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

(ω₁ × ω₂) y
(ω₁/ω₂) y
(ω₁ + ω₂)/y
(ω₁ + ω₂) y

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Theory of Machine
A mechanism consisting of four links is called a __________ mechanism.

Simple
Binary
Compound
None of these

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