Kinematics of Machinery SPPU Endsem Question Paper May 2024

Questions

1. Q1

   1. a)

      Explain With neat sketch Kennedy’s theorem.

      [5]
   2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [13]
   OR

2. Q2

   1. a)

      Explain velocity image principle With neat sketch.

      Also asked:Nov 2025 ·Nov 2023

      [5]
   2. b)

      The following data relate to a slider crank mechanism, crank radius AB = 0.50m is rotating in clockwise direction, connecting rod length = 2 m long, crankshaft speed = 600 rpm. When crank is turned 450 from inner dead center (I.D.C) find, 2 i) The velocity of piston P ii) The angular velocity connecting rod BP iii) Velocity of point D on the connecting rod which is at a distance of 0.5 m from B. iv) Acceleration of point D and angular acceleration of connecting rod.

      [13]

3. Q3

   1. a)

      Explain in short i) Type synthesis. ii) Number synthesis. iii) Dimensional synthesis

      Also asked:Nov 2025 ·May 2025 ·Nov 2023 ·May 2023

      [6]
   2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [11]
   OR

4. Q4

   1. a)

      Explain with neat sketches three position synthesis of four bar mechanism inversion method.

      [6]
   2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [11]

5. Q5

   1. a)

      Explain Spur and Helical gear with neat sketch.

      [5]
   2. b)

      Two mating gears have 20 and 40 involute teeth of module 10 mm and 20° pressure angle. The addendum on each wheel is to be made of such a length that the line of contact on each side of the pitch point has half the maximum possible length. Determine the addendum height for each gear wheel, legth of the path of contact. arc of contact and contact ratio.

      Also asked:Nov 2023

      [12]
   OR

6. Q6

   1. a)

      Give comparison between Bevel gear nad Worm gear.

      [5]
   2. b)

      An epicyclic gear train consist of three gears A, B and C as shown in fig. The number of teeth on annular gear A is 74 and on gear C is 34. The gear B meshes with both gear A and C and it is carried on an arm F which rotates about the centre A at 25 rpm. If the gear A is fixed, find the speed of gear B and C.

      Also asked:Nov 2025

      [12]

7. Q7

   1. a)

      Define automation. Why automation is important for any industry?

      Also asked:Nov 2023

      [6]
   2. b)

      A cam operates a roller, inline reciprocating fol1ower while rotating at 300 rpm. The further specifications are: Minimum radius of the cam = 25mm, Lift of follower = 30mm, Diameter of roller = 15mm Angle of lift =120° (Nature of lift is S.H.M.), Outer dwell angle = 30°, Angle of return = l50° (Nature of return is uniform acceleration and retardation where acceleration is equal to retardation in magnitude).Draw the cam profile. 4

      Also asked:Nov 2023

      [12]
   OR

8. Q8

   1. a)

      Explain concept of artificial intelligence in automation.

      [6]
   2. b)

      A cam is to be designed for a knife edge follower with the following data: i) Cam lift = 40 mm during 90º of cam rotation with simple harmonic motion. ii) Dwell for the next 30° iii) During the next 60° of cam rotation, the follower returns to its original position with uniform velocity. iv) Dwell during the remaining, 180° Draw the profile of the cam when the line o stroke of the follower passes through the axis of the cam shaft. The radius of the base circle of the cam is 40 mm.   

      Also asked:May 2025

      [12]