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Theory of Machine

Theory of Machine
If the opposite links of a four bar linkage are equal, the links will always form a

Rectangle
Pentagon
Triangle
Parallelogram

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Theory of Machine
The Whitworth quick return motion mechanism is formed in a slider crank chain when the

Smallest link is a fixed link
Coupler link is fixed
Longest link is a fixed link
Slider is a fixed link

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Theory of Machine
Klein's construction is useful to determine

Displacement of various parts
Velocity of various parts
Acceleration of various parts
Angular acceleration of various parts

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

700°K
650°K
600°K
625°K

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Theory of Machine
In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

Greater than sum of other two
Equal to sum of other two
There is no such relationship
Less than sum of other two

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Theory of Machine
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

l = 2p - 3
l = 2p - 2
l = 2p - 5
l = 2p - 4

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