A7018

Total Pages: 2 Reg
No.: | Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017
Course Code: ME307
Course Name: MACHINE DESIGN -1 (AU)

Max. Marks: 100 Duration: 3 Hours
PART A

Answer any threefull questions, each carries I Omarks. Marks

1 Explain the different inversions of slider crank chain with the help of detailed examples (10)

2 In a four-link mechanism as shown in the figure below, the dimensions of the links (10)

areas under: AB —50 mm, BC — 66mm, CD — 56 mm and AD — 100 mm. At the
instant when counter clockvhse direction. Determine-
i. Velocity at point C

11. . Velocity of point E on the link BC when BE 40 mm lil. Velocity of an offset point

F on the link BC ifBF = 45 mm, CF = 3() mm and BCF is read clockwlse iv. Velocity

of rubbing at pins A, B, C and D when the radii of the pins are

30,40,25 and 35 mm respectively

3 a) Explain the Kutzback's and Gruebler's criterion for the mobility ofmechanisms (5)
b) You are being asked to design a mechanism to construct an exact straight line as a part (5)
of an interview in a reputed organisation. What will be your suggestion and explain it.

4 A four-link mechanism with the following dimensions is acted upon by a force 80

N at an angle of 150° on the link De as shown in the figure. The dimensions of the (10)

links are as follows: AD = 500 mm, AB = 400 mm, BC = 1000 mm, DC = 750 mm,
DE = 350 mm. Determine the input torque T on the link AB for the static equilibrium
of the mechanism for the given configuration.