Hi CWatters, thanks for the reply. The pressure required according to the tables would be 400KPa. So I've got density, flow rate and pressure now and looking through some notes and other resources I think I was missing some equations.
b)
y = ρg =1200 x 9.81 = 11772
where y is specific weight...
Homework Statement
A centrifugal pump has the following pressure – capacity characteristics:
It is planned to use this for a process having the following system characteristic:
(a) Determine the operating point for this pump with this system.
(b) The actual flowrate required by the...
I re-read the question and realized the answer was staring right back at me after reading your link. Feel a little bit silly but I've got the answer now thanks.
Homework Statement
A gearbox and flywheel are as shown in FIGURE 4. The output shaft rotates in the opposite direction to the input shaft at 5 times its speed. The gearbox has an efficiency of 92%. If the flywheel is solid, has a mass of 50 kg, a diameter of 1.5 m and is to accelerate from rest...
After cross multiplying and simplifying the equation and then using the quadratic formula to get 2 values for x I've ended up with 2 values that use imaginary numbers, clearly this is not correct and I've gone wrong somewhere above. I'm pretty sure I've cross multiplied incorrectly but not...
Hi guys,
I have been searching for a way to solve the equation past here and came up short ( no idea why the image is sideways sorry). Is there a rule I'm forgetting about to simplify the last part to determine x?
I got my answer for I and A using :
I = (D4 - d4)π/64
= (0.084 - 0.064)π/64
= 1.37x10-6 m4
A = π(R2 - r2)
= π(0.042 - 0.032)
= 2.199 x10 -3 m2
I'll recheck my notes later today and read up on the failure modes.
I've gone back over the question and noticed I've used diameter instead of radius for area so A= 2.199x10-3 m2
this makes Le = 2.96 m and L = 5.93 m and this seems to be the minimum length that buckling will occur.
Part b: Failure mode is buckling (not 100% on this)
ii: Failure Load Fc =...
Yes it has but the thread had died about 2 years ago and only the first part of the question was discussed. I'll put some more work into this question later today and see if I can come to a conclusion.
Homework Statement
Hi guys (first post here let me know if I can fix anything that I've done wrong),
I'm struggling a little with the second part of this question and seem to be going round in circles
A column has the dimensions shown in the diagram below.
(a) What is the minimum length of...