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Theory of Machine

Theory of Machine
If there are L number of links in a mechanism, then number of possible inversions is equal to

L + 2
L
L + 1
L - 1

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Theory of Machine
The motion of a shaft in a circular hole is an example of

Completely constrained motion
Successfully constrained motion
None of these
Incompletely constrained motion

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Theory of Machine
In a steam engine, the link constitutes a

Connecting rod with big and small end brasses, caps and bolts
Piston, piston rod and cross-head
All of these
Crank pin, crankshaft and flywheel

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Chain coupling
Flexible coupling
Universal coupling
Oldham's coupling

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G²
G.I₂
G².I₂
I₂/G

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

Slightly less than 45 mm
95 mm
Slightly more than 45 mm
45 mm

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