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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 is 4140 mild steel?

I think you're looking at two separate terms.

SAE 4140 steel is a Chromium-Molybdenum steel used extensively for axles, aerospace concerns, and firearm manufacture.

Mild steel is a catch-all term for plain carbon steel of low carbon content (such as SAE 1018) which is generally cheap, not heat-treatable, and used for fairly low-strain applications.

I hope that helps.

Mike

Source - Machinery's Handbook, 11th Edition, 1943

What is standalone application?

It means that it is by itself - as opposed to being bundled with other applications for example.

How does a servo motor function?

Control of the active power supplied

by the generator to an interconnected

network

• Control of network frequency on an

isolated electrical network

• Protection of the unit against over speed

in case of load rejection

What is centrifugal tension?

As with any other rotational system in a belt drive during rotation, the belt is subjected to centrifugal force. Due to the centrifugal force the belt is thrown outward from the grooves of the pulley and causes additional tensioning of the belt. The effect of centrifugal tension is that it reduces the pretension of the belt and hence increases belt slip.

Which is the difference between a level valve and level control valve?

The purpose of both the valves is same - that to maintain a certain level(in a vessel or tank...) Simple Level valve could be referred to an ON - OFF valve where as control valve could be referred to an analog type of valve. On - OFF valve is for a crude control of level, while control valve is used where a fine level control is needed.

What are the benefits of using wood?

Wood is a renewable resource. It is strong, light, fairly easy to work and work with, and it lasts pretty well. It is relatively inexpensive, broadly available, and can be adapted to make lots of wonderful things from kitchen spoons to houses. And when we look at the custom turnings or crafted wood furnishings produced over the years, we see some of the most wonderful grain and coloration in this ancient building material.

Why starting current of the motor is high?

The simplest way to start a three-phase induction motor is to connect its terminals to the line. In an induction motor, the magnitude of the induced EMF in the rotor circuit is proportional to the stator field and the slip speed (the difference between synchronous and rotor speeds) of the motor, and the rotor current depends on this EMF. When the motor is started, the slip speed is equal to the synchronous speed, as the rotor speed is zero (slip equal to 1), so the induced EMF in the rotor is large. As a result, a very high current flows through the rotor. This is similar to a transformer with the secondary coil short circuited, which causes the primary coil to draw a high current from the mains. When an induction motor starts DOL, a very high current is drawn by the stator, on the order of 5 to 9 times the full load current. This high current can, in some motors, damage the windings; in addition, because it causes heavy line voltage drop, other appliances connected to the same line may be affected by the voltage fluctuation. To avoid such effects, several other strategies are employed for starting motors.

What cause electrical shock volts or amps?

They both do. Voltage is a measure of electrical pressure. Amperage is a measure of electrical flow (current) (amount of electricity flowing). High voltage by itself will not kill you but will leave a nasty taste in your mouth. At the right pressure your heart can be stopped though by a single amp.

How are proportioning valves used?

To distribute input pressure to the output(s). Automobile brakes use a proportioning valve to prevent sending too much or too little pressure to the wheels. Since your car dives forward and the weight of your engine is on top of your front wheels, the back wheels need less hydraulic pressure.

Design and draw a knuckle joint for a load of 100 KN?

it is very easy. u can find it in the book of machine desigh by khurmi or kannath or bhandari.

What are the disadvantages of water wheels?

The biggest disadvantage of a horizontal waterwheel is that the weight of the turning wheel works the most against the current in this situation. In vertical waterwheels, the momentum of the descending parts isÊadded to by its own weight.

How nut coke is charged in blast furnace?

According to steel.nic.in; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention, this excludes coke (nut/pearl coke) mixed with sinter etc.

Introduction of high quality coke to a blast furnace will result in lower coke rate, higher productivity and lower hot metal cost. This principal is followed by many private chemical firms like Coke Oven Consultants and so on.

Fullform of ieee?

IEEE stands for Institute of Electrical and Electronics Engineers. It is an organization made up of engineers, scientists and students who develop standards for the computer and electronics industry.

What do you understand by regulation in a transformer?

Regulation of transformer means percentage reduction of transformer secondary voltage due to transformer loading as compared to its no load voltage.

Another AnswerA transformer's voltage regulation is defined as 'the change in its secondary voltage, from no-load to full-load, at a specified power factor, expressed as a percentage of its full-load voltage, with the primary supply voltage held constant'.

What is the silver content of plumbing solder?

That would depend on the application just like tin and lead solder or tin and antimony.

There are so called silver solders which is a wrong term as solder normally pertains to a lead content .

It should be technically called a silver bearing alloy as per AWS specifications

Depending on the tensile strength that one would want such as brazing alloys where we have joints 87,000 or low temperature silver bearing which has an average tensile strength of 16,000

What is open cast mining?

Open cast mining is mines that are dug on hilly areas. It is quick easy way of providing coal but it damages the wildlife and can be quite dangerous. The way open cast mining is carried out is that they stay on the same ground level when digging. This is done by moving the dug out soil along so slowly more area has been dug out. This will continue until all the coal has been removed and then the mine will be filled up again and left to grow naturally.

When was the Chrysler building built?

From 1928 to 1930.

Construction was started Sept. 19, 1928 and completed on May 28, 1930

What is blueprint drawing?

An old method of reproducing drawings that wound up with the copies being blue background with the lines in white. The original drawing was fed through rollers with the blank paper that exposed it to light. Then the blank paper was devleoped by exposing it amonia---very smelly process. The paper would develope into a blue color and the exposed lines were white---usually.

What type of tools does an engineer use?

There are a wide variety of types of tools. These include drills, hammers, screw drivers, wrenches, saws, as well as axes.

How can you melt fused silica?

Fused silica has 2 meanings: previously fused silica and presently fused silica.

Previously fused silica is fused by heating it to its melting point. This can be done in crucible in a furnace.

Presently fused silica is already hot and fused.

Note: melted silica is probably a conductor, at least melted glass is a conductor.

Container used to transport molten metal in a foundry?

Ladle

While a ladle is used in the process, I believe the container being asking about is either the slag pot or the smelting pot.

I agree the call ladle because our customer from foundry plant also call ladle.we produce the ladle transfer car according to the customer demand.The ladle widely use in the steel industry.

How do you calculate actual power factor?

The power factor of a circuit is defined as the cosine of the phase angle -which is the angle by which the supply current lags or leads the supply voltage in AC circuits.

Power factor is always expressed as either a 'lagging power factor' or as a 'leading power factor'.

The terms 'lagging' or 'leading' describe the relationship of the supply current to the supply voltage. Since current lags voltage in an inductive circuit, 'lagging power factors' describe inductive circuits; since current leads voltage in capacitive circuits, 'leading power factors' describe capacitive circuits. In practice, lagging power factors are more common than leading power factors, because most practical loads are inductive (e.g. motors, etc.).

Power factors are normally expressed as a decimal (e.g. '0.8 lagging') although, in the past they were often expressed as a percentage (e.g. '80% lagging'). 'High' power factors tend towards unity, whereas 'low' power factors tend towards zero.

In terms of power, the cosine of a circuit's phase angle and, therefore, its power factor is the ratio of that circuit's true power (expressed in watts) and its apparent power (expressed in volt amperes).

Power factor has no effect whatsoever upon the energy consumed by a load, but it does effect the amount of current drawn from the supply. 'Low' power factors result in unnecessarily-large load currents for any given load, which mean that the supply utilities need to use larger than necessary conductor sizes (expensive!). For industrial or commercial (but not residential) loads, therefore, it is often desirable to 'improve' the load's power factor towards unity, which acts to reduce the load current. This is most-usually done by installing capacitors close to the load, and is termed 'power-factor correction' or 'power-factor improvement'. Capacitors used in this way are rated in reactive volt amperes, rather than in microfarads.

Jigs and fixtures in manufacturing industry?

1. Alignment of a part or workpiece.

2. Securing the part or workpiece.

3. Duplication of a process.

4. Maintain or improve part quality.

5. Increase productivity.

6. Reduce cost of production.

7. Improve overall safety to the part, the operator, and the machine.