Dr.A.P.J.Abdul Kalam University
Bachelor of Engineering
Third Semester Main Examination, Dec-2020
Theory of Machines & Mechanism (ME222T)
Branch-ME
Time: 3:00 Hrs Max Marks 70
Note: (i) Attempt any five questions.
(ii) All question carry equal marks.
Q.1 (a) What is machine? Explain the sub division of Theory of machine.
(b) Explain the Kutzbach equation and how it is transform to Grublers equation?
Q.2 (a) Explain the four bar mechanism and their inversions with suitable application?
(b) Define the Grashoff’s law and their feasibility in four bar mechanism?
Q.3 (a) What is Gear? Also explain classification of Gears according to the axes of shaft connected?
(b) What is Kinematic pair? And also explain classification of the Kinematic pair?
Q.4 (a) Distinguish between flat belt and V belt on the basis of power transmitted, space, grip and application?
(b) Define gyroscopic couple? Explain gyroscopic effect on naval ships?
Q.5 (a) What is law of gearing? Define relative velocity of sliding of gearing?
(b) What is the condition for correct steering? Enlist main type of steering mechanism with neat sketch.
Q.6 (a) Derived an equation for minimum number of teeth required on Pinion/Gear in order to avoid interference?
(b) Prove Kennedy’s theorem and three instantaneous center shared by three bodies in relative motion to one another.
Q.7 (a) Drive an expression for the ratio of driving tension in the rope drive, assuming that the angle of the grove of the pulley to be 2B.
(b) With neat sketch explain the term interference and undercutting between two mating gears?
Q.8 Define the following terms (Any four)
(i) Kinematic chain
(ii) Degree of freedom or mobility
(iii) Pitch circle
(iv) Module
(v) Length of path of approach
(vi) Mechanism
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