EXPERIMENT NO.4

Experiment No.4
11.0 Questions for confirmation of learning:
1. Rate of change of linear displacement of a body w.r.t. time.
2. Rate of change of linear velocity of a body  w.r.t. time.
4. ω = 2πN / 60
12. Conclusion / Results:
1. slider crank mechanism     2. velocity and acceleration of reciprocating mechanism.   3. N coincides with O
     Advantages of the method – 1. Separate velocity and acceleration diagram not  
                    required.   2. Drawing of perpendicular and parallel lines and transforming  
                    them on particular place is avoided. 3. Simple construction  4. Less space  
                    required. 5. Separate scale for velocity and  acceleration diagram is not  
                    required.

13.0 Questions:  
1. Klein’s construction is a graphical method used to determine velocity and acceleration of reciprocating parts of steam engine and Internal combustion diagram.

2.In conventional graphical method, separate velocity diagram and acceleration diagram are to be drawn. For that it is needed to draw parallel and perpendicular lines carefully besides calculations is a separate part.
            In Klein’s construction only one figure will determine velocity and acceleration values. Not necessary to draw parallel and perpendicular lines. It is simple in construction and easy to understand.

3. We can use Klein’s construction method for determining velocity and acceleration of   vertical internal combustion engine also.

8. a) This graphical method is used for only slider crank mechanism. For other mechanisms like four bar chain etc. different method is to be used.  b) So many lines in one figure may confuse the observer   c) Careful attention is required while constructing and measuring the vector lengths in the diagram.

9. Ritterhau’s construction and Bannett’s construction are other two graphical methods used  to determine velocity of slider in I.C.engine.


 10. Klein’s construction can not be used four bar chain mechanisms there is no                 sliding motion in four bar chain mechanism.The construction of Klein’s graphical         method has no arrangement for four bar chain mechanism.

Comments

Post a Comment

Popular posts from this blog

EXPERIMENT No. 5

Image
                                                      EXPERIMENT No. 5 7.0    1. Stepwise procedure for drawing displacement diagram- 1. By taking proper scale mark out stroke, dwell, return stroke and dwell as per the data   given in problem. 2. Mark lift of follower on vertical line. 3. make divisions as per the motion of follower. like Uniform velocity, SHM, and uniform acceleration and retardation. 4. Make same no. of equal divisions( as that of vertical lift of follower.) of the out stroke and return stroke. 5. By considering motion of the follower connect the points to form a straight line or a curve, as the case may be.             2.  Stepwise procedure for drawing cam profile. 1. 1.With proper scale draw the di...
Read more

EXPERIMENT NO.10

Image
                                            Expt. No.10 10.0  Questions for confirmation of learning 1. The process of providing the second mass in order to counteract the effect of the centrifugal force of the first mass is called balancing of rotating masses. 2. a) To reduce vibrations and bending of the shafts. b) To minimize noise production. c) To provide max. efficiency. d) To prevent wear and tear. 3 . a) Neglect. b) Attention. c) Poor knowledge. d) Wrong calculations. 4 . Unbalanced                                                              ...
Read more