Figure shows a four bar chain and the number indicates the respective link lengths in cm. The type of the mechanism is known as :
Slider crank
Double crank
Crank rocker
Double
rocker
Double crank
Given : Length of shortest link = 5 cm
Length of longest link = 10 cm
Length of other two link 8 cm and 9 cm
Applying Grashof’s law,
So, it is a class 1, four bar linkage,
and when shortest link (5 cm) is fixed, it would give crank-crank or double
crank or drag-crank mechanism or rotary-rotary converter.
Hence, the correct option is (B).
&Key Points:-
1Class 1 : Four bar linkage
2Class 2 : Four bar linkage
d = c > a+ b
3Class 3 : Four bar linkage
d + c = a + b
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