Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem Old 141902 Kinematics Of Machines Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (OLD) EXAMINATION ? WINTER 2018
Subject Code:141902 Date: 10/12/2018
Subject Name: Kinematics Of Machines
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks .
Q.1 (a) Discuss with neat sketch different types of steering gear mechanism of
automobile in detail.
07
(b) Define Number of degree of freedom and determine the number of degree of
freedom for the mechanisms shown in Fig.1, 2, 3
Figure:1 Figure:2
Figure:3
07
Q.2 (a) Explain ?The common normal at the point of contact between a pair of teeth
must always pass through the pitch point?
07
(b) Define :
1. Space Centrode
2. Body Centrode
3. Fixed instantaneous Centre
4. Permanent instantaneous Centre
07
OR
(b) What is meant by inversion of mechanism? Sketch double slider cranks chain &
draw its inversion.
07
Q.3 (a) Define the following terms.(1)Link(2)Higher pair(3)Ternary Joint(4)Locked
chain(5)constrained Motion(6)Degree of freedom(7)Quaternary link.
07
(b) Write Short Note on Straight-Line Mechanism. 07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (OLD) EXAMINATION ? WINTER 2018
Subject Code:141902 Date: 10/12/2018
Subject Name: Kinematics Of Machines
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks .
Q.1 (a) Discuss with neat sketch different types of steering gear mechanism of
automobile in detail.
07
(b) Define Number of degree of freedom and determine the number of degree of
freedom for the mechanisms shown in Fig.1, 2, 3
Figure:1 Figure:2
Figure:3
07
Q.2 (a) Explain ?The common normal at the point of contact between a pair of teeth
must always pass through the pitch point?
07
(b) Define :
1. Space Centrode
2. Body Centrode
3. Fixed instantaneous Centre
4. Permanent instantaneous Centre
07
OR
(b) What is meant by inversion of mechanism? Sketch double slider cranks chain &
draw its inversion.
07
Q.3 (a) Define the following terms.(1)Link(2)Higher pair(3)Ternary Joint(4)Locked
chain(5)constrained Motion(6)Degree of freedom(7)Quaternary link.
07
(b) Write Short Note on Straight-Line Mechanism. 07
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2
OR
Q.3 (a) Derive an expression for the ratio of shafts velocities for Hooke?s joint and draw
the polar diagram depicting the salient features of driven shaft speed.
07
(b) A double universal joint is used to connect two shafts in the same plane. The
intermediate shaft is inclined at an angle of 20? to the driving shaft as well as
the driven shaft. Find the maximum and minimum speed of the intermediate
shaft and the driven shaft if the driving shaft has a constant speed of 500 r.p.m.
07
Q.4 (a) The dimensions and configuration of the four bar mechanism, are as follows :
P1A = 300 mm; P2B = 360 mm; AB = 36mm, and P1P2 = 600 mm The angle A
P1P2 = 60?. The crank P1A has an angular velocity of 10 rad/s and an angular
acceleration of 30 rad/s
2
, both clockwise.Determine the angular velocities and
angular accelerations of P2B, and AB and the velocity and acceleration of the
joint B.
07
(b) Define Centrifugal tension for flat belt also discuss the effect of centrifugal
tension on power transmission.
07
OR
Q.4 (a) Explain cariole?s component of acceleration. 07
(b) Explain the Phenomenon of ?slip?& ?creep? in a belt drive. 07
Q.5 (a) State & prove the law of gearing. 07
(b) Explain Epicycle gear train with neat sketch. 07
OR
Q.5 (a) What are different types of chains? Explain with neat sketches, the power
transmission chains.
07
(b) What are the various types of the torques in an epicyclic gear train ? 07
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This post was last modified on 20 February 2020