This question was previously asked in

TNTRB 2017 ME Official Question Paper

- Kendall’s formula
- Little’s formula
- Bellman’s formula
- Erlang formula

Option 2 : Little’s formula

Free

General Studies Chapter Test 1

4818

15 Questions
15 Marks
27 Mins

__Explanation:- __

**Littles law**

For a stable system average, no of customers in the queue or system is equal to the average customer arrival rate multiplied by the average waiting time of the customer in the queue of the system.

L_{s }= λ × W_{s }

L_{q} = λ × W_{q}

where, W_{s }= average waiting time of a customer in the system, W_{q} = average waiting time of a customer in the queue, L_{q }= average no of a customer in a queue, L_{s }= average no of a customer in a system

__Important Points__

Queuing models are represented by Kendell and Lee notation whose general form is (a/b/c) : (d/e/f)

where,

a = Probability distribution for arrival pattern, b = Probability distribution for service pattern, c = No of servers in the system, d = Service rule or service order, e = Size or capacity of the system, f = Size or capacity of calling population

India’s **#1 Learning** Platform

Start Complete Exam Preparation

Daily Live MasterClasses

Practice Question Bank

Mock Tests & Quizzes

Trusted by 2,16,97,377+ Students

Testbook Edu Solutions Pvt. Ltd.

1st & 2nd Floor, Zion Building,

Plot No. 273, Sector 10, Kharghar,

Navi Mumbai - 410210

[email protected]
Plot No. 273, Sector 10, Kharghar,

Navi Mumbai - 410210

Toll Free:1800 833 0800

Office Hours: 10 AM to 7 PM (all 7 days)