Unit 084 Mark
1. State whether the following statements are
True or False:
1. Dynamic Slack per Remaining Operation computes value as the amount of dynamic slack remaining divided by the number of operations remaining
2. High opportunity and ability to utilise the opportunity, which enables a company to produce new products .
3. Backward scheduling, the scheduler will select a planned order release date and will schedule all the activities from this point forward in time.
4. The second step of analysis involves involves finding the area of opportunity in the market.
1. Dynamic Slack per Remaining Operation computes value as the amount of dynamic slack remaining divided by the number of operations remaining
2. High opportunity and ability to utilise the opportunity, which enables a company to produce new products .
3. Backward scheduling, the scheduler will select a planned order release date and will schedule all the activities from this point forward in time.
4. The second step of analysis involves involves finding the area of opportunity in the market.
1T,
2T, 3F , 4F


1T
2F, 3T ,4F


Feedback:
Not
the right choice: Statement 1 is True, Dynamic as Slack per Remaining
Operation computes value as the amount of dynamic slack remaining divided by
the number of operations remaining.Statement 2 is True as High opportunity
and ability to utilise the opportunity, which enables a company to produce
new products. Statement 3 is false as, Forward scheduling, the scheduler will
select a planned order release date and will schedule all the activities from
this point forward in time.Statement 4 is false as, The first step of
analysis involves finding the area of opportunity in the market.


1F,
2F, 3F ,4T


1T,
2T, 3F ,4T

2. Match the following formula sets:
Match

Correct
Answer

User
answer

Feedback


Total
completion time

Total
process days

Cumulative
late in days/no of sequences


Average/Mean
Flow time

Total
cumulative flow time in days/number of sequences

Total
cumulative flow time in days/number of sequences


Average
number of jobs running at a time

Total
cumulative flow time in sequence at a time/total process days required.

Total
process days


Average
Lateness

Cumulative
late in days/no of sequences

Total
cumulative flow time in sequence at a time/total process days required.

3. Assume that a manufacturer has the following shop orders to be
dispatched in the next 6 working days. Sequence the job according to priority
as established by:
a) Least slack and
b) Critical ratio
By using the Least Dynamic slack and critical ratiopriority rule.
Shop order number 17 18 19 20 21 22
Number of work days remaining 6 7 5 4 3 2
a) Least slack and
b) Critical ratio
By using the Least Dynamic slack and critical ratiopriority rule.
Shop order number 17 18 19 20 21 22
Number of work days remaining 6 7 5 4 3 2
Least
Slack : 21 20 2217 18 19 Critical Ratio: 2117 18 22 20 19


Least
Slack : 22 20 21 17 18 19 Critical Ratio: 21 17 18 20 22 19


Feedback:
Not
the right choice: No of working days left = 6 hence slack order for shop
order number 11 is 66=0 days. Similarly, the slack of order for shop order
number 18 is 1, for 19 is (1), for 20 is (2), for 21 is (3), and for 22 is
4.
Therefore, least slack scheduling sequence is (ascending order): 11, 16,12,15,14 and 13. b) Critical ratio = [number of days remaining for the entire work] / [number of days remaining for the individual shop order] Therefore, critical ratio of shop order 17=6/6=1, similarly for 18=6/7=0.85,19=6/5=1.2,20=6/4=1.5,21=6/3=2,22=6/2=3 

Least
Slack : 22 21 20 19 18 17 Critical Ratio: 18 17 19 20 21 22


Least
Slack : 21 20 22 17 18 19 Critical Ratio: 21 18 17 20 22 19

Unit 091 Mark
1. A manufacturing approach that uses
computers to control the entire manufacturing process is known as
______________.
Computer
Aided Process Planning


Computer
Integrated Manufacturing


Feedback:
Right
Choice: A manufacturing approach that uses computers to control the entire
manufacturing process is known as Computer Integrated Manufacturing.


Computer
Numerical Control Machine Tools


Computer
Aided Manufacturing

Unit 082 Mark
1. State whether the following statements are True or False:
1. Low opportunity and strong position in the market, where the company avoids these markets.
2. Low opportunity, but a weak position in the market, where the company makes sure that the position in the market is sustained for profitability.
1. Low opportunity and strong position in the market, where the company avoids these markets.
2. Low opportunity, but a weak position in the market, where the company makes sure that the position in the market is sustained for profitability.
1T, 2T
 
1F, 2F
 
1T, 2F
 
1F, 2T
 
Feedback:
Not the right choice: Statement 1 is False as Low opportunity and weak position in the market, where the company avoids these markets. Statement 2 is False as Low opportunity, but a strong position in the market, where the company makes sure that the position in the market is sustained for profitability.

2. State whether the following statements are True or False:
1. Scheduling in manufacturing aims to maximise the production time and costs.
2. Production scheduling aims to minimise the efficiency of operation and reduction of costs.
1. Scheduling in manufacturing aims to maximise the production time and costs.
2. Production scheduling aims to minimise the efficiency of operation and reduction of costs.
1T, 2F
 
1F, 2F
 
1F, 2T
 
Feedback:
Not the right choice: Statement 1 is False as Scheduling in manufacturing aims to minimise the production time and costs. Statement 2 is False as The production scheduling aims to maximise the efficiency of operation and reduction of costs.
 
1T, 2T

3. The horizontal axis represents the ___________ and the vertical axis represents the__________ in Gantt charts.
Total time span of the project, Tasks that make up the project
 
Track of thousands of items, Revise the schedules at interval
 
Duration of completion, Duration of unavoidable delay
 
Feedback:
Not the right choice: Gantt schedule indicates Duration of completion, Duration of unavoidable delay
 
Priorities of activities, Contacts based activities

4. Which of the following are the uses of a Gantt chart ?
1. Shifting of employees from allowload work centre to high load centers.
2. Reassigning resources when the load at one work centre becomes too large.
3. Graphical representation of total workload for each work centre.
4. Information of the due date requirements of each job.
1. Shifting of employees from allowload work centre to high load centers.
2. Reassigning resources when the load at one work centre becomes too large.
3. Graphical representation of total workload for each work centre.
4. Information of the due date requirements of each job.
4,3,1
 
Feedback:
Not the right choice: Statement 4 is limitation of a Gantt chart .Statement 3,1 are the uses of a Gantt chart.
 
2,4,3
 
3,1,2
 
1,2,4

Agile
manufacturing


Lean
manufacturing


Group
Technology


JustinTime


Feedback:
Not
the right choice: JustinTime (JIT) is a manufacturing technique, intended
to remove the manufacturing wastes by manufacturing the required right
quantity and combination of parts at the right place at the right time.

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