Question

Q. 253 Four links of a mechanism have lengths of 3,7,5,4 units
respectively. By fixing link of length 3 units resulting
mechanism will be
(a) crank-crank mechanism
(b) crank rocker mechanism
(c) rocker-rocker mechanism
(d) a mechanism with change points​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Answer:. :

Answer:. FOUR-BAR MECHANISMA four-link mechanism with four revolute joints is commonly called a four-bar mechanism.Application of four-bar mechanisms to machinery is numerous. Some typical applications will involve:a) Correlation of the angular rotations of the links connected to the fixed link

• Link that has no connection to the fixed link is known as the coupler link. A point on this link (which is known as the coupler point) will describe a path on the fixed link, which is called the coupler-point-curve. By proper choice of link dimensions useful curves, such as a straight-line or a circular arc, may be found. This coupler point curve can be used as the output of the four-bar mechanism (such as the intermittent film drive shown below