0
Engineering
Engineering is an art and profession devoted to designing, constructing, and operating the structures, machines, and other devices of industry and everyday life.
5,839 Questions
Is there an equation that addresses how pressure psi affects flow cfm through a fixed orifice?
yes, the pressure is directly related to the effective force acting on the fluid body, so from the pressure differential you can compute the effective force on a small mass of fluid in the orifice, which can then be translated into a flux integral, which can be solved for Volume/time.
they are all the same, the only way to get dimensions is to go to your favorite truck's website.
There are a number of assumptions required to answer this question!
1) E = Young's modulus. This assumption is based on the reference to axial forces and a request to calculate elongation.
2) t = tonnes (1,000 kg) = 9,810 Newtons
First of all, Young's modulus is normally expressed in Pascals (N/m2). So it is sensible to convert your value of Young's modulus into SI units.
Modulus (N/cm2) = (80 * 1000 * 9.81) / 10
Calculation of modulus with SI units:
Area = 0.1 * 0.1 = 0.01 m2
Modulus = (80 * 1000 * 9.81) / 0.01
= 78,480,000 N/m2 = 78.48 MN/m2
= 78.48 MPa
Now Young's modulus (E) can be used to find the axial strain (ΣA) that occurs in a material at a given axial stress (σA).
You have not told us what the axial stress is, however:
E = σA / ΣA
ΣA = σA / E
In order to calculate the elongation (change in length) from the above we would require the original length of the bar (which again you haven't given us), however:
ΣA = change in length / original length
So the change in length (m) = (σA / E) * original length
Below is an example using the above based on assumed values for axial stress and the original length of the bar:
Bar undeformed length = 0.3 m
Mass applied = 10 tonnes (10,000 kg)
Axial Stress (σA) = Force / Area
Axial Stress (σA) = (10,000 * 9.81) / 0.01
Axial Stress (σA) = 9.81x106 Pa
Change in length = (9.81x106 / 7.848x107) * 0.3
Change in length = 0.0375 m (3.75 cm or 37.5 mm)
Why are toboggans made from ash?
Ash has a good strength to weight ratio, is shock resistant and most importantly for toboggans, it steam-bends easily.
What is a flat file in metal workshop?
A hand file where both surfaces are flat. Used to file down metal where the surface requires a flat finish. Other files in the work shop are curved concave, curved convex ,triangular and square. Each used to specific shape filing.
How generic engineering can improve food supplies?
Genetic engineering can help farmers be more productive by making plants that withstand herbicides and pesticides, have shorter growing seasons, and are more hearty. However, studies have not been fully conclusive on the dangers of genetically altered food supplies.
Pigging is when a tight fitting (but not sticking!) plug (the pig) is inserted into a pipe, and then made to travel down the pipe by applying pressure to the pipe behind the pig. Pigs can be used to clean and inspect the pipe, and also to separate different batches of material from each other.
What is the meaning of 6013 in welding electrode?
60 represents the 60000 psi tensile strength; just need to add three zero.
The third number represents the welding position; number 1 represents all positions.
The last number represents the type of arc; 3 represents medium to shallow penetration ac/dcrp.
What effect did the standard gauge have on railroad lines?
It allowed railroads to form a cross-country network.
Top 10 best IT engineering college in Gujarat?
1. SVNIT, Surat
2.Nirma University Ahmedabad
3.Changa
4.DDIT Nadiad
5.Birla (BVM) Vidyanagar
6.Chandkheda govt engineering college
7.Ganapat Kherva Mehsana
8.Ld Government College
9. CU Shah Wadhvan
10.MS University
Generator Transformer back-charging is done because of the following reasons:-
1. To ensure the healthiness of Generator transformer after performing all the transformer related tests before synchronising with the grid.
2. To ensure all the protections of transformer before putting it into actual operation.
3. To check the polarity, ratio & connections of transformer.
4. To check all the PTs & CTs in circuit & their availability to the relays for protection & metering.
5. To check Voltage level & polarity at LAPT.
6. To perform change-over operation checks of UATs & the tie breakers with main breakers.
Since all the protection system related to relays acts in the same way for forward & reverse power, we check the availabilty of each equipment before final synchronisation with the grid.
What is a coolant in a CNC machine?
A coolant is used to keep the tool tip cool. Keeping the tool tip cool prolongs the life of the tip ensuring the accuracy and consistence of the machined component.
Coolants are mixed with water and are anti-corrosive. If correctly mixed, it will not cause corrosion to any of the machine's parts.
What was the technology like in the eighteen hundreds?
Many technological advances occurred in this century, especially in the second half.
Here are some highlights.
- Steam engines become quite reliable - steam ships crossed oceans and steam locomotives pulled trains . Railroads connected the US from coast to coast.
- Telegraphs and later telephones changed the world of communication. A trans-Atlantic telegraph cable connected the US with Europe.
- Electric lights and electric companies and electrical service to homes came into being.
- Electric street cars appeared in cities
- Oil and natural gas wells were sunk and oil and gas became important sources of fuel.
- The gasoline engine was developed and gasolene cars appeared late in the century.
- Ice-making machines led to ice-houses which sold ice all year round.
- Photography came into existence.
- The linotype machine greatly simplified setting type for printing.
almost all modern computers do this (the exceptions are typically simple microcontrollers ). various methods can be used:
- prefetch
- pipelining
- caches
- etc.
One computer that I used that implemented prefetch (without pipelining, caches, or other mechanisms) to an extreme was the Delco Magic V implementation of the MIL-STD-1750A architecture. It had a prefetch unit with a FIFO buffer that could store roughly 20 instructions before they were needed by the address evaluation and operand read unit which had another FIFO buffer which could store roughly 20 instructions their operands and the address to store the results to before they were needed by the execution unitwhich had yet another FIFO buffer which could store roughly 20 results and the address to store those results tobefore they were needed by the memory storage unit. In all roughly 60 instructions could be held waiting to be processed between prefetch and storage of results to memory. Multiple levels of scoreboard synchronization logic were used to prevent the prefetch unit and address evaluation and operand read unit from accessing memory or registers pending modification by the memory storage unit or execution unit.
What part of a filet weld that can be convex or concave?
The 'face' of the weld may be slightly convex, flat, or slightly concave.
Definition of face left and face right observation?
Face left observation(In theodolite survey):
If the face of the vertical circle is to the left of the observer, the observation of the angle is known as Face left observation
Face Right observation(In theodolite survey):
If the face of the vertical circle is to te right of the observer, the observation of the angle is known as Face right observation
How do you get the specific gravity of aggregates in cold mix asphalt?
give me a blowjob then i will tell u the answer.
Why does a plane needs a vertical stabilizer?
to maintain its position in air otherwise it will go out of control.
What is the role of judiciary in Science and Technology?
The Judicial Branch of government plays no role whatsoever in the fields of science and technology unless, or until, a legal question or suit of some kind referencing those spheres is brought before it.
Well planner salary in oil field?
I've employed Well Planners for 15 years. The current rate I use is for a junior WP (relevant degree and 0-2 yr exp.) start at $90,000 - $120,000.
For a Senior WP (5+ yr exp.) $160,000 - $200,000.
Some have stepped up faster to the intermediate level (~$140,000) region in under 2 years however usually they'll be working alone and be doing Torque and Drag, Hydraulics, EOWRs, BHA Trend Analysis etc with little supervision.
Florida, California
How do you set the G54-G59 Offsets on oi-t series Fanuc controller?
If you are using a probe to set offsets, plug your probe results from Fanuc point probing macro G65P9100. Values from this macro are placed in the following variable by the point probing macro: #125 for X, #126 for Y, and #127 for Z. These can be used to set your G55 thru G59 offset directly or the values can be stored in #900 series write-able variables for doing calculations such as averaging, checking squareness, flatness, etc... The variables that set G55 are as follows. Example for X #5241=#125, for Y #5242=#126, for Z #5243=#127. Add 20 for each coordinate offset after that, IE: #5261, #5262, #5263 for G56, #5281, #5282, #5283 for G57 and so on.
