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Railways NTPC (Technical Ability) Production Engineering and Planning Question Bank Production Planning

  • question_answer
    A work shift is for 8 hours duration; 30 minutes lunch break and two 15 minutes (each) tea breaks are allowed per shift. If products are to go out after assembly at the rate of 60 per shift, and total assembly time content for a product is 42 minutes, then minimum number of work stations needed is:

    A) 8                                 

    B) 12

    C) 6                                 

    D) 5

    Correct Answer: C

    Solution :

    Time for one work shift \[=8\times 60=480\,\min \] Actual time available for work \[=480-30\,(30+2\times 15)=420\,min\] Time required per product, \[=\frac{420}{60}=7\,\min \] Minimum number of work stations needed \[=\frac{Assembly\,\,time\,\,content}{Time\,\,required\,\,product}\] \[=\frac{42}{7}=6\,\min \]


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