PPC Questions For Mid-2

PPC Questions For Mid-2:

Unit-5

1.      

a)     Define routing and explain the routing procedure.

b)    Discuss loading and scheduling as an essential part of production control.

2.     a. Explain, in detail the procedural steps involved in MRP.

b. state and explain the functions served by MRP.

3. Bring out the difference between operation sheet and root sheet. Explain them with an example.

4. Prepare the root sheet showing a feasible sequence of operation for the component show in figure below.

UNIT-6 

1.(a) Discuss the use of Gantt chart for scheduling purposes.

b)  Eight jobs are to be processed on three machines A, B, C and in the same order ABC and the processing times required for the jobs on the machines are shown below. Find the sequence that minimizes the total processing time for all the jobs

job	A	B	C	D	E	F	G	H
A	4	8	5	9	3	4	9	6
B	6	4	7	1	4	2	5	2
C	8	7	9	7	9	8	9	7

2.a)state the assumptions in flow shop scheduling?

b) a market research firm has 7 customers orders that must be processed sequentially through two activities x and y.The estimated times (in hours) for the activities  are as shown below. Use john sons rule to develop a schedule that would permit all the work to be completed in the minimum amount of time . Also find the total time required to process all the jobs.

	1	2	3	4	5	6	7
Activity x	5	7	2	1	8	3	16
Activity y	4	9	7	2	2	9	5

3)(a). Distinguish between single machine scheduling and flow shop scheduling.

b). use graphical method to minimize the time needed to process the following jobs on the machines shown (for each machine, find the job which is to be scheduled first).

Also calculate the total elapsed time to complete the jobs.

Job1	Sequence	A	B	C	D	E
	Time(hrs)	2	6	5	4	7
Job2	Sequence	C	B	D	A	E
	Time(in hrs)	6	5	7	4	8

4)(a) Define routing?

b) Discuss different routing procedure.

UNIT -7:

1(a).  What are the merits and de-merits of the transportation problem of method of aggregate planning?

b)    Distinguish between the rank positional weight and COMSOAL algorithm for assembly line balancing?

2) what is line balancing ? explain why it is required in continuous flow production systems?

3) An assembly line is designed to produce 80 units of a product per day. The number of shifts per day is two and the number of working hours per shift is 8.the related data are given in the following table:

Operation number	Intermediate proceed tasks	Duration(min)
1	-	7
2	1	2
3	1	2
4	1	5
5	2,3	8
6	3,4	3
7	5	4
8	5,6	7
9	4,6	9
10	7,8,9	8

3) Explain the following as used in line balancing?

a) Cycle timing

b) Line efficiency

c) Balance delay and

d) Work element time.

4) Alpha associates produces mini computers that have a seasonal demand pattern. The available production capacities during regular time and overtime, as well as other cost data are as follows.

UNIT-8

1)    Explain the methods used for the analysis of progress in shop floor?

2)    (a) What are the types of follow up? Explain

(b) What is dispatching and what is the function of the dispatch list?

                             3) Write about the following:

a) Follow –up of raw materials

(b) Follow –up of work in progress

                              4) (a) what are the activities of a dispatcher? Explain.

                                 (b) Write a note on the applications of computers in PPC.