Industrial Engineering

For isotropic materials

G = E/ (2(1+u)

where u = poisson ratio

mutual inductance

Calculate the volume first by multiplying the cross sectional area with length.

Multiply the volume with density of mild steel which will give the weight.

The density of Mild steel is 7850 kg/ m3

e.g

Calculate the weight of 2 m rod having cross sectional area of 5 m2

Volume = 2x5 = 10 m3

Weight = 10 x 7850 = 78500 kg

Be specific that same units are used all around the calculations.

To reduce the growth of weeds and for drainage. Also:

* It enables water to drain from the track

* It assists in helping control the thermal expansion of continues welded rail * As a train passes the rails it supports the train * it distributes the weight of the train from the track structure to the subgrade * maintains a smooth running surface for the train to run on

Between 121-137 on the Brinell hardness scale - which is quite soft. The end parts are generally case-hardened before use to 60+ Rockwell "C".

You need alternating current for a transformer, for DC you would have to interrupt the power supply to make it effectively DC pulses.

hydraulics uses the principle of hydrostatic pressure to work

http://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html

Rubber would have come first as an eraser is made out of rubber.

People used pieces of bread to erase mistakes long before they figured out that a piece of rubber would do the trick. Ancient Greeks and Romans had been using flat pieces of lead to draw on papyrus. By the 1400s, graphite had been discovered and, around a century later, the modern pencil began to take shape. Though the milky liquid that was produced by trees in tropical areas had been discovered centuries ago, it was only in the eighteenth century, that the substance "caoutchouc," which was used to create natural rubber, made its way to Europe. Sometime around 1750, it was suggested that the substance be used as an eraser. It was the scientist Joseph Priestley who proposed that the name of the substance be changed to "rubber," because it was used to rub pencil marks away.

Pressure transmitters function by measuring the amount of pressure that is exerted on their sensors. It measures mechanical pressure and converts it to electrical signal.

In North America the system used is AWG. American Wire Gauge.

Can you please send to me Turbine parts and function of each part shortly?

Yes, a car is a machine. Look at the definition of Machine. "any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks" A car definitely fits that description.

Current, voltage and resistance are related by the Ohm's law formula which states that current is directly proportional to the applied voltage and inversely proportional to the resistance at a constant temperature.

Stated mathematically:

I = E/R

where I = current in amperes, abbreviated to A

E = voltage in volts, abbreviated to V

R = resistance in ohms, usually signified by the Greek omega Ω

A factor of safety against yield is applied to design stress

Yield Stress/ Design Stress = Factor of safety

The factor of safety varies for different industries; 1.5 is used in structural steel design for buildings; 1.25 or even 1.1 for aircraft/space systems

It must (i) increase, or (ii) decrease, or (iii) stay the same.

If (iii), there's no point in having it at all,

so consider what happens to stage gain at the lowest frequencies, as the capacitor has less and less effect on the circuit.

An 'earth pit', is a pit in which connection is made between the earthing (grounding) electrodes that have been hammered into (or laid into) the soil, and the earthing conductor that connects the electrical installation to those earthing electrodes.

25.4 mm in an inch. so, 12mm is just short of 1/2 inch

Transition metals are the elements with the atomic number: 21-30, 39-48, 57-80, 89-108.

No, steel is not an element. It is actually considered an alloy, and the elements iron and carbon are the basic ingredients for making steel. Certainly other elements can be added for different reasons, like chromium for the production of stainless steel. But it is iron and carbon that make steel.

You are probably referring to Absorption refrigeration. Try Google.

In general, friction acts to prevent objects in contact with each other from moving with respect to each other. Friction keeps your furniture where you place it. The friction between your feet [or shoes] and the ground enables you to walk. When you apply the brakes in a car, friction causes the wheels to stop rotating . Friction holds a screw or nail into a board and a nut onto a bolt. Friction between your fingers and an object allows you to pick it up. Friction is proportional to surface roughness. A measurement of the force needed to overcome friction can be used as an indicator of a surface's roughness/smoothness.

When friction is used to reduce relative motion (or to get objects moving), a portion of energy needed to do so is dissipated in the form of heat. This is why a car's brakes get hot and why a nail pulled out of a board can feel warm. Usually, this heat is just a waste byproduct, but it can be useful. The friction of rubbing your hands together will warm them, and the heat of driving a nail into a board can be used to temporarily melt the adhesive on 'cement coated' nails.

pneaumatic transmiter