Advertisements
Advertisements
Question
______ time is the time when the machine is available but is waiting for a job to be processed
Solution
Idle
APPEARS IN
RELATED QUESTIONS
Find the sequence that minimizes the total elapsed time to complete the following jobs in the order AB. Find the total elapsed time and idle times for both the machines.
Job | I | II | IIII | IV | V | VI | VII |
Machine A | 7 | 16 | 19 | 10 | 14 | 15 | 5 |
Machine B | 12 | 14 | 14 | 10 | 16 | 5 | 7 |
Find the optimal sequence that minimizes total time required to complete the following jobs in the order ABC. The processing times are given in hours.
Jobs | I | II | III | IV | V | VI | VII |
Machine A | 6 | 7 | 5 | 11 | 6 | 7 | 12 |
Machine B | 4 | 3 | 2 | 5 | 1 | 5 | 3 |
Machine C | 3 | 8 | 7 | 4 | 9 | 8 | 7 |
Choose the correct alternative :
The objective of sequencing problem is
If there are n jobs and m machines, then there will be_______ sequences of doing the jobs.
Choose the correct alternative :
In a 3 machine and 5 jobs problem, the least of processing times on machine A, B and C are 5, 1 and 3 hours and the highest processing times are 9, 5 and 7 respectively, then it can be converted to a 2 machine problem if order of the machines is:
Fill in the blank :
The time required for printing of four books A, B, C and D is 5, 8, 10 and 7 hours while its data entry requires 7, 4, 3 and 6 hrs respectively. The sequence that minimizes total elapsed time is _______
State whether the following is True or False :
The time involved in moving a job from one machine to another is negligibly small.
Solve the following problem :
Five jobs must pass through a lathe and a surface grinder, in that order. The processing times in hours are shown below. Determine the optimal sequence of the jobs. Also find the idle time of each machine.
Job | I | II | III | IV | V |
Lathe | 4 | 1 | 5 | 2 | 5 |
Surface grinder | 3 | 2 | 4 | 3 | 6 |
Solve the following problem :
Find the sequence that minimizes the total elapsed time to complete the following jobs. Each job is processed in order AB.
Machines | Jobs (Processing times in minutes) | ||||||
I | II | III | IV | V | VI | VII | |
Machine A | 12 | 6 | 5 | 11 | 5 | 7 | 6 |
Machine B | 7 | 8 | 9 | 4 | 7 | 8 | 3 |
Determine the sequence for the jobs so as to minimize the processing time. Find the total elapsed time and the idle times for both the machines.
A toy manufacturing company produces five types of toys. Each toy has to go through three machines A, B, C in the order ABC. The time required in hours for each process is given in the following table.
Type | 1 | 2 | 3 | 4 | 5 |
Machine A | 16 | 20 | 12 | 14 | 22 |
Machine B | 10 | 12 | 4 | 6 | 8 |
Machine C | 8 | 18 | 16 | 12 | 10 |
Solve the problem for minimizing the total elapsed time.
Solve the following problem :
A foreman wants to process 4 different jobs on three machines: a shaping machine, a drilling machine and a tapping machine, the sequence of operations being shaping-drilling-tapping. Decide the optimal sequence for the four jobs to minimize the total elapsed time. Also find the total elapsed time and the idle time for every machine.
Job | Shaping (Minutes) | Drilling (Minutes) | Trapping (Minutes) |
1 | 13 | 3 | 18 |
2 | 18 | 8 | 4 |
3 | 8 | 6 | 13 |
4 | 23 | 6 | 8 |
Choose the correct alternative:
Machine | Job | |||
A | B | C | D | |
I | 5 | 6 | 8 | 4 |
II | 4 | 7 | 9 | 10 |
The optimal sequence for above data is
If there are n jobs and m machines, then there will be _______ sequence of doing jobs.
In assignment problem each worker or machine is ______ capable of handling any job
State whether the following statement is True or False:
One of the assumptions is made while sequencing n jobs on 2 machines is: two jobs must be loaded at a time on any machine
State whether the following statement is True or False:
In sequencing problem each job once started on any machine must be processed still its completion
Find the sequence that minimizes total elapsed time to complete the following jobs in the order XY. Find the total elasped time and idle times for each machine.
Jobs | A | B | C | D | E |
Machine X | 10 | 2 | 18 | 6 | 20 |
Machine Y | 4 | 12 | 14 | 16 | 8 |
A publisher produces 5 books on Mathematics. The books have to go through composing, printing and binding done by 3 machines A, B, C. The time schedule for the entire task in proper unit is as follows :
Book | I | II | III | IV | V |
Machine A | 4 | 9 | 8 | 6 | 5 |
Machine B | 5 | 6 | 2 | 3 | 4 |
Machine C | 8 | 10 | 6 | 7 | 11 |
Determine the optimum time required to finish the entire task. Also, find idle time for machines A, B, C.