Download JNTUA M.Tech 2nd Sem 2016 February 9D15102 Advanced Mechanisms Question Paper

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Code: 9D15102


M.Tech I Semester Regular & Supplementary Examinations February 2016
ADVANCED MECHANISMS
(Machine Design)
(For students admitted in 2011, 2012, 2013, 2014 & 2015 only)

Time: 3 hours Max Marks: 60

Answer any FIVE questions
All questions carry equal marks
*****

*****
1 (a) Derive the Gruebler?s equation of mobility for planar mechanisms.
(b) The off-set slider crank mechanism is required to have a stroke length of 200 mm with connecting
rod 150 mm length. Determine the maximum possible length of the crank.

2 (a) State the Bobillier?s theorem related to inflection circle.
(b) Explain the analytical and graphical determination of d
i
(inflection circle) for the given conjugate
points O
m
and O
f
for which the ray angle is zero i.e. O
f
is the centre of curvature of the path of O
m
.

3 Construct the circling-point curve for the coupler of the four bar mechanism with the following
dimensions:
Fixed link (AD) = 100 mm; Input link (AB) = 30 mm
Coupler (BC) = 40 mm; Output link (CD) = 60 mm
Angle DAB = 60

4 Explain the construction of Burmester curve related to guiding a body through four distinct
positions.

5 State and explain the Robert?s theorem with respect to path generation.

6 Synthesize a four-bar linkage to meet the following specifications:
Driving link:
Driving link:
Driving link:
Assume the minimum length of the link = 100 mm.

7 (a) Explain the D-H parameters of a prismatic-revolute planar arm.
(b) Sketch and explain SCARA industrial robot manipulator.

8 (a) Explain the Jacobian of the three ? link arm.
(b) Obtain the singularity of the two ? link planar arm.
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