Engineering, 05.05.2020 07:50 mateoperez496
A conventional tollbooth is setup on an expressway. When vehicles pass the tollbooth, all of them need to stop and pay the toll cost. On average, each vehicle needs 30 seconds to stop, make payment and depart from the tollbooth. The AM peak hour starts from 7:00 AM and ends at 8:00 AM. During the peak hour, the arrival rate is 2.5 veh/min. After that, the arrival rate is 1.5 veh/min. Solve the following problem using D/D/1 queuing model.
a. At which time-of-day the queue will be dissipated?
b. At which time-of-day is the queue the longest?
c. How many vehicles are there in the queue when the queue is the longest?
d. What is the longest waiting time? 1pt 5) What is the total waiting time?
e. What is the average waiting time of vehicles in the queue?
Answers: 1
Engineering, 04.07.2019 18:10, anna22684
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10, DestyHilBan1183
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10, xboxdude06
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
A conventional tollbooth is setup on an expressway. When vehicles pass the tollbooth, all of them ne...
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