Download AKTU B-Tech 8th Sem 2016-17 NME053 Advance Synthesis Of Mechanisms Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 8th Semester (Eight Semester) 2016-17 NME053 Advance Synthesis Of Mechanisms Question Paper

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B.TECH.
THEORY EXAMINATION (SEM?VIII) 2016-17
ADVANCE SYNTHESIS OF MECHANISMS
Time : 3 Hours Max. Marks : 100
Note : Be precise in your answer. In case Ofnumerical problem assume data wherever not provided.
SECTION ? A
1. Attempt the following: 10 x 2 = 20
(a) What is the degree of freedom?
(b) Explain the transmission angle.
(c) Define the term dimensional synthesis.
(d) Write down the equation for coupler curve.
(e) Write the short notes on chebyshev spacing of accuracy points.
(f) What is the coupler curve?
(g) What is the mechanical error in linkage?
(h) What is the approximate mechanism?
(i) Write the Freudenstein?s equation for velocity analysis.
(j) Explain exact straight line mechanism.
SECTION ? B
2. Attempt any five of the following questions: 5 x 10 = 50
(3) Discuss the procedure of five accuracy point?s synthesis of crank and follower
mechanism.
(b) Discuss the procedure of designing a four bar function generator with three accuracy
points.
(c) Design a slider crank mechanism in which two successive angular displacements Q12
and Q23 0f the crank produce, respectively two successive linear displacements Sn and
523 of the follower.
((1) Explain brie?y with the help of neat sketches working and application of one planar
and one spatial mechanism.
(e) Explain with the help of neat sketches cognate linkages and their applications
(f) Design a four bar linkage to transfer a link AB through three specified positions A1B1,
Asz and A3B3.
(g) Locate all the instantaneous centres of rotation of the mechanism shown in Fig.
A D
0] DIS-
, a
(h) Design a four bar linkage in which two successive clockwise angular displacements of
20? and 30? of the crank produce respectively, two successive angular displacements
10? and 15? of the follower.
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Attempt any two of the following questions: 2 x 15 = 30
Design a slider crank mechanism so that the displacement of the slider is proportional to the
square of crank rotation in the interval 45? 5 0 5 135?. Use the three point Chebyshev?s
spacing.
Synthesize a four bar linkage that will generate a function Y = X15, 1 S X S 4. Take three
accuracy points. 00 = 30?, (p0 = 90? and A(p = A0 = 90?, where 00 and (p0 respectively represent
the initial angular positions of the input and output crank. A0 and A(p are respectively the
ranges of angular movements of the input and output crank.
Explain with the help of neat sketches one approximate and one exact straight line mechanism.
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