Question 2. Apply line balancing with the conditions given in Table 3. Table 3. Processes of coil springs Time (minutes) per part Immediate Process (department) Task Label predecessors Sampling inspection for the purchased parts Transport the parts to the work stations A 3 В A Coil spring manufacturing -Heating | /hot winding/cutting the wire Coil spring manufacturing -Cooling D 6. process Coil spring manufacturing -Heat | treatment Coil spring manufacturing -Grinding F Coil spring manufacturing -Shot peening Coil spring manufacturing -Coating H Coil-spring manufacturing - Inspection Coil spring manufacturing – Packaging/transporting to the workstation Final Assembly Final inspection E D G 5 F 2 2 K 7. B,IJ 4 K (a) Draw the precedence diagram. (b) Find the minimum, maximum and desired cycle time for the final assembly only. We assume that each worker can produce 8 final assemblies per hour and each worker works 8 hours a day. Ignore all other figures given in Question 1. (Ans. Desired cycle time: 7.5 minutes/part) (c) Balance the line using positional weight and determine the total idle time. 4. 3. 3.

Question 2. Apply line balancing with the conditions given in Table 3. Table 3. Processes of coil springs Time (minutes) per part Immediate Process (department) Task Label predecessors Sampling inspection for the purchased parts Transport the parts to the work stations A 3 В A Coil spring manufacturing -Heating | /hot winding/cutting the wire Coil spring manufacturing -Cooling D 6. process Coil spring manufacturing -Heat | treatment Coil spring manufacturing -Grinding F Coil spring manufacturing -Shot peening Coil spring manufacturing -Coating H Coil-spring manufacturing - Inspection Coil spring manufacturing – Packaging/transporting to the workstation Final Assembly Final inspection E D G 5 F 2 2 K 7. B,IJ 4 K (a) Draw the precedence diagram. (b) Find the minimum, maximum and desired cycle time for the final assembly only. We assume that each worker can produce 8 final assemblies per hour and each worker works 8 hours a day. Ignore all other figures given in Question 1. (Ans. Desired cycle time: 7.5 minutes/part) (c) Balance the line using positional weight and determine the total idle time. 4. 3. 3.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question 2. Apply line balancing with the conditions given in Table 3.
Table 3. Processes of coil springs
Time (minutes) per
part
Immediate
Process (department)
Task Label
predecessors
Sampling inspection for the
purchased parts
Transport the parts to the work
stations
A
3
В
A
Coil spring manufacturing -Heating
| /hot winding/cutting the wire
Coil spring manufacturing -Cooling
D
6.
process
Coil spring manufacturing -Heat
| treatment
Coil spring manufacturing -Grinding F
Coil spring manufacturing -Shot
peening
Coil spring manufacturing -Coating H
Coil-spring manufacturing -
Inspection
Coil spring manufacturing –
Packaging/transporting to the
workstation
Final Assembly
Final inspection
E
D
G
5
F
2
2
K
7.
B,IJ
4
K
(a) Draw the precedence diagram.
(b) Find the minimum, maximum and desired cycle time for the final assembly only. We assume
that each worker can produce 8 final assemblies per hour and each worker works 8 hours a
day. Ignore all other figures given in Question 1. (Ans. Desired cycle time: 7.5 minutes/part)
(c) Balance the line using positional weight and determine the total idle time.
4.
3.
3.

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