Find the diameter of a pipe of length ‘X’ when the rate of flow
of water through the pipe is ‘Q’ and the head lost due to friction
is ‘4X’. Take the value of C = 1 in Chezy’s formula. Illustrate the
resut of diameter of pipe and also conclude the discharge value for
varying cross section of pipe, and the relationship between
diameter of pipe and pressure of flow.
Air flows through a pipe that has a length of 45 m
with an inside diameter of 0.025 m. The Mach number of the flow
exiting the pipe is 0.26, with a static pressure of 1 atmosphere
and a temperature of 300 K. If the friction factor is assumed
constant at 0.007, calculate the Mach number, static pressure,
static temperature and total pressure at the entrance.
The entrance length can be significant when the pipe length is
not relatively long.
How do you determine the entry length and how it compares to the
total pipe
length? If the entry length is ignored what does that do the
accuracy of the
predicted pressure drop, is it too high or too low?
Pipe Diameter(D)=150mm, Pipe Length(L)=980m, Friction
factor(lambda)=0.05, Water level(h)=18m
(i) Neglecting minor losses plot the pipeline characteristic
curve (system curve), for a flow rate range of 10-60 m3 /hr.
(ii) For an average flow of 20 m3 /hr select a suitable pump
from the pump performance charts provided.
(iii) What are the discharge and head values you would record at
duty point for the selected pump?
Using the flow rate of 250 gpm,
select a plastic pipe diameter (2”, 4”, 6”, 8”, 10”…) &
determine the approximate pump head based on the following:
Minor pipe losses include 6-90 degree bends (standard) and one
plug valve straightway. Document your source for your
K-values.
Document which calculation method you used to calculate the
total pump head.
To save energy, choose the largest pipe diameter that provides
the recommended 2.0 fps velocity of flow.
Assume nominal pipe diameters as...
Explain using examples, ‘how’ and ‘why’ you would
collect Sensitivity and Specificity data when performing a
Validation Study on a new DNA STR Profiling Kit.
How can this problem
be done WITHOUT using R? For the bird egg length data set, conduct
an appropriate test to determine if bird egg length differs among
species. Assume that before you conducted this test you
hypothesized about 3 contrasts a priori. These were that (1) Meadow
Pipits, Wagtails, and Robins would be different than the other 3
bird species, (2) Hedge Sparrows would differ from Wrens, and (3)
Tree Pipits would be different than all other birds. Use...
By using MATLAB software:
Exercise 2: Generate radiation pattern for a
dipole as its length varies.
% M-File: ML0803
%
% Dipole antenna movie shows radiation
% pattern as dipole length grows from 0.1
% lambda to 2.1 lambda.
%
% Variables
% L dipole length (in wavelengths)
% bL2 phase constant * length/2
% N number of theta points
% th,thr angle theta in degrees,radians
% num,den temporary variables
% F un-normalized power function
clc %clears the command window...
1. how to collect useful data online for analysis that will be
relevant to a busness?
2. what type of incentive can a buseness offer to get people to
respond to surveys truefully?
3. what are some ways that less well known companies can
overcome trust issues when collecting data to gain insight?
4. pros and cons to sample size?
5. how does "level of confidence: affect sample size?