Engineering, 23.01.2020 19:31, mistytownsend1952
The flow and density of a highway were observed to follow the triangular model as given below:
q = {50k, k< _kc 10(kj - k), k > _kc
where kj is the jam density kc and is the critical density at which the traffic reaches maximum flow (the units of flow, density, and speed in the above equationare veh/hour, veh/mile and mile/hour). a traffic engineer took a measurement of the spacing when traffic is at a standstill and found it is 17.6 ft:
a. what is the critical density at which the flow reaches its maximum?
b. what is the maximum flow that can be reached on this highway?
Answers: 3
Engineering, 04.07.2019 16:10, TheOriginalMeyah
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
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Engineering, 04.07.2019 18:20, rbgrh9465
An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.
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The flow and density of a highway were observed to follow the triangular model as given below:
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