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Terms in this set (20)
Queing means the scientific study of the letter Q in the english language
False
Which of the following results in waiting in lines
Variability
Which are components of a queuing system
Servers, Arrivals, Waiting Area
What do managers do with queuing theory
Measure and predict performance
To reduce the average number waiting in line, it is important to increase utilization
False
A multiple-channel system assumes that each server will have its own waiting line, and line changing is not permitted
False
A dental office with two professionals (one dentist one hygienist) who work together as a team would be an example of a multiple-channel system
False
A system has one service facility that can service 10 customers per hour. The customers arrive at a variable rate, which averages six per hour. Since there is excess capacity, no waiting in lines will form.
False
Waiting lines occur even in underloaded systems because of variability in service rates and or arrival rates
True
For a system that has a low utilization ratio, decreasing service capacity slightly will have only negligible effect on customer waiting time
True
An approach to reducing the variability in processing times might include greater standardization
True
In which of these settings would one be least likely to encounter first-come service
An emergency room
A restaurant that implements a limited menu and a "no substitutions" policy during peak dining hours is practicing _______ with respect to waiting-line managment
Service standardization
The goal of waiting-line management is to minimize:
The sum of customer waiting costs and capacity costs
Which of the following would reduce perceived waiting times most dramatically in a doctors office?
having patients fill out forms
A customer growing Frustrated with the wait and leaving the facility (without being served) is an example of
reneging
A ______ is one way of reducing perceived waiting time
Diversion
A basic difference between infinite-source and finite-source queuing models is the:
size of potential calling population
Why is there waiting in an infinite-source queuing system
variability in arrival and service rates
A single-channel queuing system has an average service time of eight minutes and an average time between arrivals of 10 minutes. the arrival rate is:
6 per hour
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Verified questionsENGINEERING
The volume of 1 kg of helium in a piston-cylinder device is initially $5 \mathrm{m}^{3}$. Now helium is compressed to $2 \mathrm{m}^{3}$ while its pressure is maintained constant at 180 kPa. Determine the initial and final temperatures of helium as well as the work required to compress it, in kJ.
Verified answer
ENGINEERING
Why is exceeding your vehicle's weight load dangerous?
Verified answer
ENGINEERING
The velocity potential for a certain inviscid flow field is $$ \phi=-\left(3 x^{2} y-y^{3}\right) $$ where $\phi$ has the units of $\mathrm{ft}^{2} / \mathrm{s}$ when x and y are in feet. Determine the pressure difference (in psi) between the points (1, 2) and (4, 4), where the coordinates are in feet, if the fluid is water and elevation changes are negligible.
Verified answer
ENGINEERING
You are driving at the posted speed limit of 65 mph. Most of the other vehicles are driving 70 mph or faster. You may legally drive a. 70 mph or faster, to keep up with the speed of traffic. b. between 65 and 70 mph. c. no faster than 65 mph. d. slower than 65 mph, to try to make other traffic slow down.
Verified answer
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