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Industrial Engineering

Industrial Engineering is the branch of engineering that deals with the creation and management of systems that integrate people and materials and energy in productive ways. An industrial engineer studies industrial productivity and makes and implements recommended changes.

2,298 Questions

What are automated production systems?

A Fully Automatic System is a type of method of operation for items of technology to help achieve fast and accurate results without requiring a high degree of technical knowledge on the part of the human operators. An example of a specific area of technology that uses a fully automatic system is the ''Fully Automatic System for Monitoring Blood Pressure" which is used in the field of medicine.

Is the colosseum man made?

Yes, it is one of the 7 wonders of the world. There were no power tools during the Ancient Roman's time.

In flat rolling what is a screw down and a top roll balancing mechanism?

In a rolling mill, the screw down (usually electrically operated in big mills) is the mechanism for setting up the spacing between the rollers, called the roll gap. The top roll balancing mechanism is a mechanical (rods, springs) or hydraulic setup to hold the top roller up in contact with the screw down. The larger mills we see in operation have massive rollers, and they have considerable weight. The whole of the upper roll mechanism will be set in heavy chocks to to stabilize it and distribute the loads of the rolling operation. Additionally, we often see mills with backup rollers, and the top work roller and backup roller pair will be held in contact with the screw down by the top roll balancing mechanism. There is a bit more to this when we consider the dynamic operation of the biggest rolling mills, but the basics remain the same. The thickness of the product, the "indexing" of the roll gap, will be set by the screw down. And the the top roller is held up against the screw down by the top roll balancing mechanism.

When reading the steel heat treatment notation RC what does the R mean?

RC stands for Rockwell Hardness C scale; the different letters A,B,C etc. are based on different loads and indenters for measurement. C scale is typical for steels, while B scale is typical for aluminum. There are conversion tables for these if needed.

What is a slab foundation?

It is a flat piece (slab) of concrete sitting on compacted soil or stone, usually meaning there is no basement. These generally only appear in areas where the ground does not freeze frequently.

What is Modulation index in Frequency modulation?

Modulation Index is the ratio of the maximum deviation frequency to the frequency of modulation. In other words it is the ratio of the spread in frequency spectrum to the frequency that was used to modulate the carrier.

For FM,

modulation index is given by the formula

mf= df/f

where,

mf=modulation index for FM

df=difference in carrier frequency

f=frequency of the signal

What is infi steel?

INFI steel is used by Busse Combat Knives. The performance of INFI in the blades of Busse Combat has been demonstrated live by jerry Busse at live and public demonstrations at knife shows, as well as in videos and pictures, these include thousands of push cuts on full once inch hemp rope without sharpening, cuts though a hanging bundle of 10 strands of inch hemp, multiple 2x4's chopped with the knife still shaving, and very heavy prying loads and bends to a very high degrees without breaking on a fully hardened blade.

INFI has: 0.5% carbon, 8.5% Chromium, 0.74% nickel, 0.36% vanadium 1.3% molybdenum 0.95% cobalt and 0.11% nitrogen. The rest is iron (obvious).

Why is Pump discharge line size smaller than suction line size?

An increase in any pipe diameter will lower the flow velocity, and therefore reduce head loss due to friction, but it is not immediately obvious to me why pump manufacturers provide a discharge side of smaller diameter than the suction side. I don't think it has anything to do with cavitation, maybe it is just to ensure that fluid flows easily away from the pump, since it will be travelling at a higher velocity in the discharge line than entering the pump on the suction side. Maybe the NPSHR values are derived from the difference in pipe diamters across the pump by the manufacturers, such that cavitation does become an (indirect) issue. Maybe somebody else can answer this one. The suction side of the pump normally has only atmospheric pressure of approximately 1 bar available to propel the oil into the pump. Using a larger suction diameter reduces friction loss, and keeps the fluid as close to atmospheric pressure as possible. Fluids will boil at a lower temperature when subjected to vacuum, and hydrauic systems already have a high temperature due to friction losses elsewhere in the circuit. If the suction side is allowed to develop too much vacuum, the lowered boiling point will be exceeded, and cavitation that is destructive to the pump will be induced. The problem can be alleviated by pressurising or elevating the oil tank to maintain a positive pressure at the pump inlet.

What is the Power Triangle?

In electrical systems using AC (Alternating Current), circuit elements can experience reversals in the directional flow of energy. (AC reverses current direction many times a second.) This results in less power delivered to the circuits than would be indicated by the input voltage and current (amperage). The apparent power, as indicated by voltage and amperage, is represented as the hypotenuse of a right triangle. The other sides of the triangle are the real power (usable energy in watts) and the reactive power (which is returned to the generating system). Reactive power, therefore, is the energy not available to do work. Using the Pythagorean theorem, the relationship between the three energy amounts is: (apparent power)2 = (real power)2 + (reactive power)2 Ideally, reactive power would be the smaller of the two component energies. The ratio of real power to apparent power is called the Power Factor (ranges from 0 to 1 ), and can be increased by reducing the reactive power through proper system design.

What is the minimam distance of IS cable and non IS cable in same tray or trench?

It should add a divider between this different type cable to prevent the interference Type your answer here...

What is the difference in a105 and a106 pipes?

Simply, A105 is an ASTM standard for a ratedsteel where SA105 is the ASME standard for (nominally the same) rated steel. Basically, they are the same, although SA105 has additional applications beyond A105 according to ASME standards.

What do meant by classification and codification?

Codification is a system of classifying items by their groups. The classification of items is classifying these items into categories of groups.

How can you calculate the length of spiral ring?

the dia meter of the pile is 750mm the pitch of the sprial rings are 100mm and how to calucualte the lentngth of the rod for the one meter lkength of pile.

Where is hydraulic system used?

Hydraulic systems are most commonly found in braking systems on cars but can also be found on heavy-duty equipment like for lifting the back tray of dump trucks or on bulldozers for moving the blade.

How do you calculate a true length on an engineering drawing?

The scale written in the right side of the drawing shows the true length. Any drawing has perspective, but to determine the length of the specifications, one must have the actual scale by the designer. This is always defined by the draftsman and noted somewhere either on the right upper side corner or the lower right side corner.

What are overhead cranes?

Overhead cranes are variously structured machines that "travel" along a runway structure or pair of tracks located above the work floor of a plant or factory

What are the characteristics of a 2 x 2 experimental design?

A 2 x 2 experimental design involves manipulating 2 factors that you are interested in, with 2 levels of each variable. For example, you may want to see the effects of both level of caffeine (factor 1) and difficulty of test (factor 2) on test performance. Thus, for factor 1 - caffeine level, you may have high amount of caffeine (factor 1 level 1), and low amount of caffeine (factor 1 level 2). For factor 2 - difficulty of test, you may have a difficult test (factor 2 level 1), and an easy test (factor 2 level 2). Then you randomly assign individuals to one of the four conditions in your experiment. In this example case the conditions would be: 1. Low caffeine, difficult test 2. High caffeine, difficult test 3. Low caffeine, easy test 4. High caffeine, easy test Then, to analyze your data, you would conduct a factorial ANOVA using SPSS or by hand if you so desire.

How can check a transistor with digital multimeter?

If your multimeter has a transistor check (hfe), then place the Collector,Base& Emitter in the CBE port of multimeter.

Turn the shaft to Diode mode.

If the value is zero,skip that transistor.

You can use the forward resistance of each junction, using the ohms range or diode check function.

Put the leads on the Base and Emitter, then reverse the leads. You should get about 600Ohms forward bias and open circuit (infinity) reverse bias.

Do the same between the Base and Collector. You should get the same results.

Finally put the leads between the Collector and Emitter. You should get open circuit both ways around.

Be aware that some high power transistors have a diode across the Emitter and Collector.

These tests will just be a basic 'go - no go' test. It may pass this test and yet still not perform fully.

You can see obvious faults, like a dead short both ways on each junction or across the Emitter to Collector.