COURSE: INDUSTRIAL ENGINEERING LESSON : QUESTIONS ON QUEU NG

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QUESTION A tain reservation facility has five counters each capable of handling 20 reservations/hr:Persons arrive at a mean rate of 90/hr. (i) Mean number of persons at any time in the facility (ii) The mean time a person spends at the facility (ii Average length of queue at each counter. What would happen to queue if the arrival rate reaches 105/hr.

SOLUTION Loo S-.4 would 44.

QUESTION A barber serves 5 customers/hr and customer arrival is 3 customers/hr.What is the probability that atleast 2 customer waiting in the queue P) = 1_ (.4+.24+,149 l-.784= .216 aloos Queue One in queuet One Sesved

QUESTION Little's law is a relationship between: (a) Stock level and lead time in an inventory system (b) Waiting time and length of the queue in a queuing system (c) Number of machines and job due dates in a scheduling problem (d) Uncertainty in the activity time and project completion time Ans :b

QUESTION Which of the following distributions is followed by the number of arrivals in a given time in a single-server queueing model? (a) Negative exponential distribution(b) Poisson distribution (c) Normal distribution (d) Beta distribution Ans :b

QUESTION In single server queuing model if arrival rate is and service rate is u, then what is the probability of the system being idle? (b) H (c) 1-4 1-2 Ans:C

QUESTION Consider two queuing disciplines in a single server queue. Case 1 has a first come first served discipline and case 2 has a last come first served discipline. If the average waiting times in the two cases are Wi and W2 respectively, then which one of the following inferences would be true? (a)W>W (d) Data insufficient to draw any tangible inference Ans:C

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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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Gabru Naik

a year ago

tq sir

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Bhalchandra

a month ago

Sir will you plz explain last question plz

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Bhalchandra

a month ago

how W1=W2 i am little bit confuse in that

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MK

Mohan K

8 months ago

Sir, would you mind explaining the last question, why does the serving discipline not affect waiting time?

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