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Reg No.:_ Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SIXTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), MAY 2019

Course Code: ME304
Course Name: DYNAMICS OF MACHINERY
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any three full questions, each carries 10 marks. Marks
1 A four bar mechanism as shown in Figure, is subjected to two forces, 73 = 200014 (10)

at 60° from horizontal at midpoint of link 3 and F4 = 4000 N at 459 from link 4 at
midpoint of link 4. The dimensions of links are as under:
AB = 0.3 m, BC = 0.4 m, CD = 0.45 m and AD = 0.6 m. Perform static force

analysis and determine resisting torque on link 2 using superposition method.

2 A slider crank mechanism of crank radius 60mm and connecting rod length (4)
240mm is acted upon by 2kN gas force at its piston. Calculate the torque to be
applied on the crank to make the mechanism in static equilibrium, when the

crank makes 60° with the line of stroke.

3 The piston diameter of an internal combustion engine is 125 mm and the stroke 18 (10)
220 mm. The connecting rod is 4.5 times the crank length and has a mass of
50kg. The mass of the reciprocating parts is 30kg. The centre of mass of the

connecting rod is 170mm from the crank pin centre and the radius of gyration

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