Answer:
Answer for the question:
You are given the following information about a drybatch paving operation. You are going to use one mixer that has a service rate of 30 services per hour. The dry-batch trucks you use for bringing concrete to the paver have an arrival rate of 7.5 arrivals per hour. Each truck carries 6 cubic yard of concrete. You have a total amount of 13,500 cubic yard of concrete to pour. You rent a truck at $15 per hour and the paver at $60 per hour. If the job takes more than 80 hours, you pay a penalty of $140 perhour owing todelays injob completion. Onthe basis of least cost, determine the number of trucks you should use. Plot the cost versus the number of trucks used.
is given in the attachment.
Explanation:
Answer:
(a)
(b)57.33831 pound/cubic feet
(c)120.1095 hp
Explanation:
We have
(a) 760 miles / hour
We know that 
And 1 hour = 60×60=3600 sec
So 
(b) 927 kg/cubic meter to mass/cubic foot
We know that 1 kg = 2.20 pound
So 921 kg = 921×2.20=2026.2 pound
We know that 1 cubic meter = 35.31 cubic feet
So 57.33831 pound / cubic feet
(c) We have to convert to hp
We know that 1 kj /sec = 1.341 hp
So 89.5 kj/sec = 89.5××1.341=120.1095 hp
Answer:
29.31 m
Explanation:
It is given that flow rate Q =6.0 ltrs/minute 
Diameter =10 mm
So radius = 
Area of duct 
Average velocity 
The given Reynolds number is 1800 which is less than 2000 so it will be a laminar flow
So Reynolds number friction factor 
So head loss ifs given by 
Answer:
Zero.
Explanation:
Lets take velocity V is given as in 2 dimensional flow
V=u i +v j
V=f(x,y)
u=f(x,y)
v=f(x,y)
Rotational ability ω given as
If
ω=0 ,then flow will be irrotational.
ω ≠0 ,then flow will be rotational.
So we can say that , ω will be zero every where for irrotational two dimensional flow .
