Industrial Engineering

pneumatics are used only in low power applications

hydraulics are used in medium to high power applications.

Condensation polymerisation is when two molecules of the same substance (monomer) react together to form polymer chain (like polythene) and eliminate a smaller (usually water) molecule. For example, Nylon-6 is prepared by using condensation polymerisation of ε-Caprolactum

The physical internal windings between single phase and three phase motors makes this an impossibility That being said money can make anything happen. Depending on the amount of money you want to spend to make this happen there is a device on the market called a VFD ( Variable Frequency Drive). On the three phase input terminals you apply your single phase voltage. On the output terminals you connect your three phase motor. When run in this configuration there is an internal switch that has to be changed to let the VFD know that it should be looking for only two lines on the input to be hot. Otherwise the VFD thinks that there is a line loss on the three phase input terminals and the unit will not start. <<>> You can make a phase converter with a couple extra motors. Wire up a 120V single phase motor and couple it to a 3 phase motor. This turns the 3 phase motor into a generator for you to run to whatever equipment the 3 phase motor is. Although if you had a single phase motor you probable don't need a 3 phase motor. == == <<>> yes! you will have to buy a phase converter. <<>> yes, it is possible to this with a rotary phase converter . one manufacturer is "phase master" (as an example only, not wishing to promote any brand). these are not cheap units and it may be more cost effective to purchase a single phase (220V.) replacement motor . the overall efficiency (operational costs) would be better too . a rotary phase converter is usually the "last choice on the list" .

The brakes in my car are hydraulic.

The difference between a gas and a plasma is the chemical properties. Plasmas collect electric currents and electric and magnetic fields affect plasmas

Another word for a moving staircase is 'escalator'?

Concrete is stronger than cement.It is composed of aggregates (sand and gravel) and cement; and may be cast with reinforcing bar within it (reinforced concrete). Cement is only a part of concrete. Cement has no tensile strength while concrete has compressive and tensile strength.

By Ohm's Law.... Voltage equals Current times Resistance (V=I*R)

So if given the voltage and resistance of a system and applying algebra I=V/R .

24.74 pounds using only 100 toothpicks and wood glue

It is called Tower Bridge.

Or you might be talking about the one that was on Harry Potter and the Half-Blood Prince, which is the wobbly bridge, but it's proper name is the Millenium Bridge.

Milled steel is a cheap form of iron-carbon alloy that is subject to corrosion but is malleable and does not suffer from the brittleness issues of Stainless steel. Stainless steel contains additional compounds that reduces atmospheric and hydro-corrosion and increases the hardness of the steel. This makes it more expensive, less malleable and is more likely to suffer from stress fatigue and stress fractures

Resistance: Electrical resistance describes how an electrical conductor (a wire) opposes the flow of an electrical current (flow of electrons). To overcome this opposition a voltage (a energy) must dropped (used) across the conductor (wire). Resistance can be described by ohms law: Ohms Law: R = V / I (Resistance = Voltage / Current) (resistance measured in ohms) where: Voltage [V]= the energy lost across an component (voltage measured in volts). Current [I] = the charge (electrons) flowing through an component (current measured in Amps). Electrical resistance can be thought of as sticking your hand out a car window. The faster [current] you drive the harder the wind presses [resistance] against you hand and therefore it takes more energy [voltage] to hold your hand steady. When trying to overcome electrical resistance, the electrical energy lost is turned into heat. This is how the elements of a household stove, toaster, and fan heater work. Because of the vacuum in a light bulb, the electrical energy lost is instead turned into light. It can be seen the electrical resistance plays a large role in modern life. Resistor: The resistor is the most common electronic component and is used to limit and/or control the voltage and current in an electronic circuit. Resistors are carefully manufactured to provide a predetermined value of electrical resistance which may range from 0.1 ohms to 100,000,000 ohms, depending on the application. The physical size of a resistor also varies dependant on the amount of power passing through the resistor, given by: P = V x I (Power = Voltage x Current) (power measured in watts) There are also many types of resistors including: · Variable Resistor - changes resistance when its shaft is rotated (volume knob on a stereo). · Thermistor - changes resistance when the temperature changes (used in a thermostat). · Light Dependant Resistor (LDR) - changes resistance when the lighting changes (used in children's night-lights). Resistor Example: An LED is a small red light (such as the one on the front of most TVs) and requires 2.0 volts and 0.02 amps to operate correctly. If we connected that LED up directly to a 12 volt battery, the voltage would be too high, and too much current would flow… the LED would blow up. We need to use a resistor to limit the voltage and current. But which value of resistance should the have resistor? Uses ohms law: R = V / I = (12.0 - 2.0) / 0.02 = 500 ohms (Note: the voltage across the resistor is the battery voltage minus the voltage we want across the LED) But which value of power should the resistor be capable of handling? P = V x I = (12.0 - 2.0) / 0.02 = 0.2 Watts

Advantages: Very sturdy, can have several cracks in structure before breaking

disadvantages: best for short distances, not attractive, hard to maintain

what is bite angle in rolling mill

Lloyd Ray was the first African American to receive a patent for improving the dustpan by attaching a short, wooden handle to a metal collection plate. He received the patent on August 3, 1897.

You need a four year BS degree at major universities and a good interview during this or following. Working as a paid or unpaid intern while in college can make the job hunting easier.

After you receive your degree, some states require you to work with a professional engineer for a period of time before you are allowed to take your state's PE exam. For example: In California you must work under a PE for 2 years before being allowed to take the PE exam, but in Nevada it's 4 years.

Partly due to scale of manufacture, partly due to the cheap and simple method of extraction from the ore, partly due to the ease with which the adundant ore can be mined, partly due to the high (compared to many metals) metal content of ores.

These are plastics which are softening while temperature increases.

Such property makes forming of end products easy.

Examples are:

Polyethylene, Polypropylene, Polystyrene, Polytetrafluoroethylene also known as Teflon, Polyvinyl chloride (PCV) to name few popular.

There are different types of pewter, but usually it's about 90 percent tin and 10 percent copper. This is called an alloy, when two or more metals are physically mixed, but do not react with each other. Other alloys include steel, bronze, and brass.

You need also to know the resistance of the cable. First you establish what the current of the load is. Then from that you calculate the wire size. From a wire size chart you find the wire resistance. Then use the formula I (squared) x R.

The reason you call it a building is because it was built as you would call something that was carved a carving or something that was painted a painting.

generally the generators are synchrozised by checking three conditions

1. their terminal voltages must be the same

2.their frequencies must be same

3.their phase sequence must be same

if any one of the conditions are not satisfied and they are connected in parallel then the machines will be burnt with in a fraction of second

800 cubic centimeters.

One similarity is that they both use fluids. Both gasses and liquids are fluids. the two are also compressible.

The answer is all of them