Mechanical Engineering

Many High Tensile bolts will have a number of raised strokes formed in the head of the bolt. Three or five are common and usually form a reverse triangle or reverse heptagon

First off, the question should be either "What math is used in Mechanical Engineering? or What is the highest level of math someone needs to take in order to become a Mechanical Engineer?"

Most college programs require through Differential Equations to earn a BS degree in ME. This means you would need to take Calculus 1, 2, and 3, Linear Algebra, and Differential Equations once you get to college. It is assumed that most students going into engineering will have no less than Pre-Calculus before entering college while most will have taken Calculus. Now each college has different requirements for fulfilling the math requirements for an engineering program. I know from my experience, Georgia Tech teaches math differently than most colleges because they combine Calc 1-3 and Linear Algebra into just 3 courses instead of 4.

My suggestion is look at the program requirements at the school you are interested in first. Second, evaluate whether you feel that you can learn the math. For those who struggle with math, if you really want to be an engineer, I suggest going to a smaller school where the class size will be smaller. This will have better student/teacher interaction so you can get more help.

The internal resistance of a cell is not constant because a cell needs to move and be flexible in order to undergo various osmosis or diffusion processes.

This is the calculation for how much static pressure shall be created by the pump to flow the water in chiller loop or for the pump to flow the water for cooling tower cycle.

dL/dT = αL*L, where L is the length of the steel, T is temperature, and αL is the linear thermal expansion coefficient which for steel is about 11.0 to 13.0.

That is possibly the easiest differential equation in history:

(1/L)dL = (αL)dT

ln(L) = αLT

L = eαLT

This can be found from the steam tables. www.x-eng.com gives steam tables. At different temperatures and pressures wolume of water can be found. To find the coefficient of expansion of water, find the volume at 5degree lower and 5 degree higher at same pressure. Take the mean and divide with the volume of water at desired temperature. Cross check the calculation for which you have the answer.

I have used the way and works well. The coefficient of expansion of water changes rapidly with temperature at constant pressure.

The difference between true stress & engineering stress is summarised as follows:

Engineering stress assumes that the area a force is acting upon remains constant, true stress takes into account the variation in the cross sectional area as a result of the stress induced deformation (strain) of a material.

For example a steel bar in tension once its yield point or stress is reached will start to "neck". Necking is the localized concentration of strain in a small region of the material, causing a reduction in cross sectional area at this point.

To calculate the engineering stress in the above case, the applied load is divided by the original cross sectional area, however the true stress would be equal to the load divided by the new deformed cross sectional area. Therefore true stress is likely to be significantly higher than engineering stress. Note that while the material is deforming elastically before the yield point is reached there will be some difference between true and engineering stress (as the material is changing shape) but it will be much smaller than the difference after the yield point is reached.

A rock core in a uni-axial compression test will typically expand radially under loading. Therefore in this case, the engineering stress (based on the original diameter) will be larger than the true stress within the material.

THE DIAMETER OF THE OUTSIDE OF THE PIPE TIMES PI TIMES THE LENGTH OF THE PIPE or D x Pi x L = A

ANSI stands for "American National Standars Institute"

seesaws

crowbars

sissors

oar attached to a boat

hammer removing a nail

fishing rod

pliers

teter totters

you can fin them lots of place's you just have to look =)

differential expansion is refer to differential distance between rotor blade and fix blade.rotor expand to
ward generator and casing expand toward control valve.when temperature increase ,expansion in casing and rotor.so rotor mass is less than casing which rotor expand more than casing.

ben Franklin

No

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of application. And a ball check valve is one of types of check valves, it a check valve in which the closing member, the movable part to block the flow, is a spherical ball.

Then a ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.

As you see, they are not the same.

There is a bedside version of the test in which the doctor collects four or five drops of blood in a small tube, cools the tube in ice water for 30-60 seconds, and looks for clumping of red blood cells.

we can weight one sheet and calculate the unit weight we can weight one sheet and calculate the unit weight

Reference points: Think about how the part will be made, and how it will be inspected. Usually something will make sense. Try to keep common references between drawing views, and if possible try to base everything from points, planes, or edges that appear in multiple views.

Tolerances: Consider how the part will be made- what minimum tolerances can be held on the intended equipment and processes? What is the maximum tolerance on the individual parts that will allow the assembly to fit together and function properly? The right answers lie between those extremes.

Bright mild steel is an alloy. It is usually used to make hammer heads and shears, and it has a smooth, but tough surface.

applications of modulas of elasticity

As the term implies, "Modulus of Elasticity" basically relates to the elasticity or "flexibility" of a material. The value of modulus of elasticity are very much significant relating to deflection of certain materials used in the construction industry. Take for example the general E value of mild carbon steel is about 200 GPa compared to about 70 GPa for aluminum. This simply translate that aluminum is 3 times flexible than steel.

Its used in your rectal cavity

Most businesses hiring mechanical engineers want applicants with at least a BS in mechanical engineering and an EIT (Engineer in Training) certificate or preferably a PE (Professional Engineer) certificate.

It's all about torque.

Basically, the further away from the pivot you apply the force, the less force you need to apply.

Since the screwdriver means you can apply a force further away from the pivot (where you put the head of the screwdriver underneath the lid of the paint can), it means you can apply less force.

YOU HAVE A FEW OPTIONS....IF YOU KNOW WHAT BASE BELONGS UNDER GLASS TOP, CALL THE MANUFACTURER AND SEE IF YOU CAN BUY ONE. YOU CAN CALL A TABLE MAKER AND HAVE ONE CUSTOM MADE. TAKE THE MEASUREMENTS OF GLASS TOP AND GO SCOUTING GARAGE SALES FOR TABLES AND LAY GLASS ON TOP, LOOKS REALLY COOL TO PUT YOUR FAVORITE PICTURES UNDER GLASS. YOU CAN MAKE ONE YOURSELF IF YOUR CREATIVE....

Manual ballast water/bilge pumps are often diaphragm pumps with flapper valves. Large pumps are often positive displacement, centrifugal or moving cavity pumps depending on the amount of crud expected in the ballast.