These are all the exercises. Useful to use exams with CTRL F during the open book exam to search for a comparable exercise, if exams look like old exercises. It is always the question with the immediate answer behind it so that it takes little time. In Canvas you always have all the tasks and then ...
opgaves.......................................................................................................................................................................... 4
Learning rates.............................................................................................................................................................. 4
How long did it take to make the first product.............................................................................................................. 4
How long will it take to make the 10th product............................................................................................................. 4
How many customers are in the system on average................................................................................................... 4
what is the cost of this system..................................................................................................................................... 5
what is the probability there are less than 5 customers in the system.........................................................................5
how many customers are waiting in the queue on average......................................................................................... 5
Which option gives the lowest cost.............................................................................................................................. 5
average time for an employee to proces...................................................................................................................... 6
extra opgaven learning curves..................................................................................................................................... 7
extra opgaven waiting lines........................................................................................................................................ 10
waiting line formules toepassen................................................................................................................................. 10
Waiting lines in praktijk............................................................................................................................................... 10
Waiting lines / wachttijd en aantal wachtende............................................................................................................ 11
waiting lines............................................................................................................................................................... 12
which option has the lowest cost................................................................................................................................ 12
waiting costs / investments........................................................................................................................................ 13
average time an employee needs to process one application....................................................................................14
oefenopgaven reader dpe........................................................................................................................................... 14
Deterministic WIP vs WIP of a simulation model....................................................................................................... 14
wip / work in progress / assembly.............................................................................................................................. 15
utilization.................................................................................................................................................................... 15
bottleneck................................................................................................................................................................... 16
throughput time / average time spent in buffer........................................................................................................... 16
WIP / summation formula........................................................................................................................................... 17
changing batch size................................................................................................................................................... 17
extra oefeningen Durlinger&bemelmans over Mrp................................................................................................... 32
MPS / MRP................................................................................................................................................................ 32
executable.................................................................................................................................................................. 34
capacity problems...................................................................................................................................................... 34
Just in time (JIT)........................................................................................................................................................ 35
decreasing lead time.................................................................................................................................................. 35
ETHE 1.......................................................................................................................................................................... 40
opgave 1 – average customers in the server............................................................................................................. 40
opgave 2 – probability … or less in the system.......................................................................................................... 40
opgave 3 – average time customers spend in waiting line.........................................................................................40
opgave 4 – How long are customers taking to pay.................................................................................................... 40
opgave 5 – learning rate / bring down costs............................................................................................................... 41
opgave 6 – labour productivity................................................................................................................................... 41
opgave 7 – WIP / Littles / production system............................................................................................................. 42
opgave 8 – additional production during break.......................................................................................................... 42
opgave 9 – availability of the process........................................................................................................................ 42
opgave 10 – batch size to prevent bottle neck........................................................................................................... 43
opgave 11 – utilisation of transport............................................................................................................................ 43
ethe 2............................................................................................................................................................................ 44
opgave 1 – expected time between two orders.......................................................................................................... 44
opgave 2 – incremental costs of the plan................................................................................................................... 44
opdracht 3 – incremental costs.................................................................................................................................. 45
opgave 4 – exception message................................................................................................................................. 46
opdracht 5 – mrp sche,e............................................................................................................................................ 46
opdracht 6 – gross requirements component............................................................................................................. 46
opgave 7 - poq........................................................................................................................................................... 47
opgave 8 – optimal order quantity.............................................................................................................................. 48
,opgave 9 – Z value / safety stock............................................................................................................................... 48
opgave 10 – setup cost / setup time........................................................................................................................... 48
, WEEK 1 – LEARNING CURVES / WAITING LINES
OPGAVES
LEARNING RATES
1. A fire truck construction company experiences a learning rate of 80% for assembling a new model fire truck.
Currently 12 fire trucks of this type have been assembled. Suppose it took X hours to construct the 12th truck. Which
of the following statements is true?
A. Assembly of the 6th truck required 1.2*X hours
B. Assembly of the 13th truck will require 0.8*X hours
C. Assembly of the 48th truck will require 0.64*X hours
D. The other three statements are all false.
HOW LONG DID IT TAKE TO MAKE THE FIRST PRODUCT
2. For a certain company it is known that the learning rate equals 78%. Recently, the 107th product was made in 47
minutes. How long did it take to make the first product?
HOW LONG WILL IT TAKE TO MAKE THE 10TH PRODUCT
3. Suppose it took an employee 8 hours to make his first chair. It took the employee 7 hours to make the fourth chair.
Assuming that his learning rate will continue this way, how long will it take him to make the 10th chair?
HOW MANY CUSTOMERS ARE IN THE SYSTEM ON AVERAGE
4. Consider a food outlet at a soccer field. There is one employee working at the food outlet. Since all customer orders
are almost identical, it can be assumed that all orders require the same, constant service time by the employee. The
time between two customer arrivals is on average 2.5 minutes (Poisson distributed arrivals). The time to serve a
customer equals 2 minutes. How many customers are in the system on average?
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