The main objective of the sequencing problem in production is to:

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RRB JE ME 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. ignore the order of job processing
  2. maximise the number of jobs processed
  3. increase the processing time of jobs
  4. minimise the idle time of machines

Answer (Detailed Solution Below)

Option 4 : minimise the idle time of machines
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Concept:

Sequencing in production refers to determining the optimal order in which multiple jobs are processed on one or more machines.

The main objective is to minimise the idle time of machines, which leads to improved machine utilization and reduced total processing time (makespan).

Why is minimising idle time important?

  • Machines are expensive; idle machines waste resources.
  • Less idle time means faster completion of jobs (better throughput).
  • Efficient sequencing leads to smoother workflows and reduced delays.

Incorrect Options:

  • Ignore the order: Sequencing is about order; ignoring it makes no sense.
  • Maximise jobs processed: This is a benefit, but not the primary goal of sequencing.
  • Increase processing time: This is inefficient and not desirable in any production setup.
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