The dead weight at the end of the fulcrum causes rotation of lever about fulcrum.
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The quick return mechanism which is an inversion of 4-bar linkage is
Match list I with list II List I List II A. Pantograph 1. Scotch yoke mechanism B. Single slider crank 2. Double lever mechanism C. Double slider crank chain 3. Tchebicheff’s mechanism D. Straight line motion mechanism 4. Double crank 5. Hand pump
Match list I with list II List I List II A. Scott-Russel 1. Intemittent mechanism motion B. Geneva 2. Quick return mechanism motion C. Offset slider crank 3. Simple motion harmonic mechanism D. Scotch Yoke 4. Straight line mechanism motion
Match list I with list II Type of joint Motion constrained A. Revolute 1. Three B. Cylindrical 2. Five C. Spherical 3. Four 4. Two 5. Zero
The number of binary links, number of binary joints and number of ternary joints in Peaucelliar mechanism is
The number of degree of freedom of a planer linkage with 8 links and 9 simple revolute joints is
The following list of statements is given: 1) Grashoff’s rule states that for a planar crank-rocker 4-bar mechanism, the sum of the shortest and longest link lengths cannot be less than the sum of the remaining two link lengths. 2) Inversions of a mechanism are created by fixing different links, one at a time. 3) Geneva mechanism is an intermittent motion device. 4) Grubler’s criterion assumes mobility of a planar mechanism to be one. The number of correct statements in the above list is
A mechanism has 8 links, out of which 5 are binary, 2 are ternary and 1 is quaternary. The number of instantaneous centres of rotation will be
In a dynamically equivalent system, a uniformly distributed mass is divided into
A crank and slotted lever mechanism used in a shaper has a centre distance of 300 mm between the centre of oscillation of the slotted lever and the centre of rotation of the crank. The radius of the crank is 120 mm. Find the ratio of the time of cutting to the time of return stroke.
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