COURSE: INDUSTRIAL ENGINEERING LESSON: IMPORTANT TERMS (QUEU NG)

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IMPORTANT TERMS E) Average length of queue or average number of customers in queue (It does not count the customers being served) 2

LITTLE'S LAW For a stable system the average number of customers in line or in system is equal to the average customer arrival rate x the average time in line or in system LITTLE'S LAw ,-a.ws Avena: wait. The m System

IMPORTANT TERMS F) Probability of 'n' arrivals in the system during period T

IMPORTANT TERMS G) Probability that more than 'T time period needed to serve a customer ex

IMPORTANT TERMS H) Probability that the waiting time in queue is >T TA

IMPORTANT TERMS I) Probability that the waiting time in the system is > T lAJs

QUESTION The number of person arrive at a service centre 8 customer/hr. The service provider takes 5 min / customer on an average. Find (i) Average number of customer in queue and system (ii) Waiting time of customers in queue and system

SOLUTION CI) 3 2 3 x 66 min min 6

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Harshit Aggarwal

Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully

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Sushovan Kumbhakar

2 months ago

Thank u mam

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Komal gupta

2 months ago

Thank you