Kinematics of Machinery SPPU Insem Question Paper Mar 2023

Questions

1. Q1

   1. a)

      Define Kinematic link and explain its types.

      [5]
   2. b)

      Explain the Grashoff’s law in four bar mechanism.

      [4]
   3. c)

      For kinematic linkage as shown in fig.1, calculate the following: i) Number of binary, ternary and quaternary links. ii) Number of degrees of freedom. 2

      [6]
   OR

2. Q2

   1. a)

      Compare machine and mechanism.

      [4]
   2. b)

      Define Degree of Freedom and Calculate the number of degrees of freedom of the mechanism as shown in fig. 2.

      [6]
   3. c)

      Explain different types of constrained motion with suitable example.

      [5]

3. Q3

   1. a)

      In an I.C. engine mechanism, the crank is 200 mm long and connecting rod is 750mm long. When the angle is turned by the crank is 60° from I.D.C and angular velocity of the crank is 20 rad/sec 2 find, i) Velocity of piston ii) Acceleration of piston

      [8]
   2. b)

      Give comparison between Single Hooke’s Joint and Double Hooke’s Joint.

      [7]
   OR

4. Q4

   1. a)

      What is loop closure equation? Derive the same for four bar mechanism.

      [7]
   2. b)

      Two horizontal shafts are connected by a single Hooke's joint. If the speed of the driven shaft between 315 and 285 r.p.m, find the greatest permissible angle between the shafts. Also calculate angular displacement of driving shaft. 

      [8]