## Electrical Engineering

Parent Category: Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.

## Subcategories

The aim is to eliminate or enhance specific frequency
One has a filament designed to work on 120 volts, the other has a filament designed to work on 240 volts.
Resistance in an electronics sense is a way of measuring how much an object resists the flow of electrons through itself. Resistance is measured in ohms. It is often characterised by the equation E = I x R where E is the voltage applied across the object, R is the resistance of the object, and I is...
Very simply, DC or Direct Current is like a flash light battery. The current flows direct in a single direction like a car around a race track. AC, or Alternating Current, does exactly what the name implies. In USA, Canada - and in other countries which use the same service frequency - the...
Answer for USA, Canada and countries running a 60 Hz power supply service. . The industry standard for low voltage (120-208V) conductors is:. A phase: black. B phase: red. C phase: blue. As you look at a three phase panel, the phases go left to right (the same way we read).. Therefore, the supply...
do you mean a 7.5 amp 240 volt....there is no such thing as a 7.5 signal phase. motor that i have ever heard of...but this may help if you can't locate the plate. on the side of the motor for the wiring diagram, look on the inside of the (junction box)
The main advantage i s that it s cheaper. Since U do not have 2 separate windings, it' s cheaper to manufacture. Unfortunately, it's not isolated. AutoTransformers are used for converting USA-2-Euro voltages and vice-versa. BUT, since one leg is common to both, U do not have electrical isolation...
in hv side, current will be less; so if we vary the rheostate, than thetre is less arcing with respect to lv side, so we always put the tap changer in hv side.
The purpose of the diode is to prevent electricity to flow in the wrong direction in a circuit.. The purpose of the diode is to prevent electricity to flow in the wrong direction in a circuit.
as the base current is very small compared to the emittercurrent,the collector current is nearly equal to the emittercurrent..
Resistors have standard colors for identification of the resistance value. In order, the colors are: black, brown, red, orange, yellow, green, blue, violet, gray, and white. Reading resistors is a very simple procedure if you use the chart and formula below. Hold the resistor with the gold or...
the direction of d.c motor is being reversed by changing the polarity of the armature winding and field winding,
BHP = Flow(GPM) X TDH(FT) x SG /3960xEFFICIENCY(%) . Example: BHP = (100 GPM) x (95 Ft) x (1.0) / 3960 x .6 . BHP = 4.0 .
When a current is alternating it is going back and forth between being positive and negative. What this means is that if you were to keep track of an individual electron making up the AC current you would find that the electron drifts back and forth in the same location. In the case of DC or Direct...
Phase is just like as +ve terminal & neutral is just like -veterminal in equivalent dc circuit. In AC, lines the higher voltage terminal is called phase &lower voltage terminal is known as neutral.
Since a capacitor resists a change in voltage, it is used to provide voltage to the regulator circuit between the point in time where the rectifying diode turns off, and the point in time where it turns back on. It is a low-pass filter.
Electroplating uses electrical currents to reduce dissolved metalcations. This is done to form a coherent metal coating on anelectrode and change the surface properties of an object.
Elecrical Engineering is used in a steel plant in many forms.... Power distribution.. Various control systems typically PLC or DCS control.. Data collection and networking. (grey area between engineering and IT)
Electric current is fed to the lamps and they light up, that waythe lighting system works. Another Answer In the case of incandescent lamps, the work done on the filament bythe electrical energy causes its internal energy to increase. Thisincrease in internal energy is accompanied by an...
The fuse sizing is dependent upon what the load current is and what the exact load type is. e.g. motors, electric heating, lighting.
Answer . A relay cannot be used to power a motor. It can be used to control the motor by wiring the motor circuit in series with the relay contacts.
Yes, if you apply it directly to a sensitive organ, such as the brain or heart. Pacemakers typically use small voltages to induce a beat in the heart.
Answer The resistance of a material depends on its length , cross-sectional area , and resistivity . This is expressed by the following equation: resistance = [(resistivity x length) / cross-sectional area] So, resistance is directly-proportional to the resistivity and length of the...
ANY METAL (COMPOUND ELEMENT) WITH HIGH FERROUS CONTENT. THIS IS COMMONLY KNOWN AS IRON.
You need not know a majority of actual statistics for a number of appliances that vary from one appliance to the next even if they are the same model. However you can learn more about what they are measured in(Kw/h) so you could give an accurate estimate by just thinking about it. for instance a...
A power transformer is in the device, such as in your stereo, andit converts line voltage (120VAC) to the voltages needs in thestereo's power supply. A distribution transfer is on the utility pole, underground in avault, or in the utility power room, and it converts distributionvoltage (13,200VAC)...
Capacitors are used in power supplies to help smooth the current when converting from AC to DC (after using a rectifier) to help reduce the ripple voltage.
(ZHLS) :- Zero Helogen Low Smoke. (FRLS) :- Fire Retardant Low Smoke.
Because the molecules in metal are slower when cold and therefore let electricity run through it easier.
Answer . No, a capacitor is a device that resists the change in electrical potential. It will take and hold a charge based on the value of the capacitor. It's most commonly used to "smooth" direct current or to pass a signal through a wire while passing very little current. There are some...
You should already know that what you are discussing involves doing some extremely dangerous procedures... . Don't even think about doing any such thing as unwinding a step-up transformer to operate on this kind of voltage!. It is equally dangerous to consider using capacitor and auto-transformer ...
The numerals L C represent 50 and 100. There are no 'long forms' of either; L = 50 and C =100.
Highest AC transmission voltage in India is 1200KV in Maharashtra and Madhya Pradesh.
As long as you don't exceed the breakdown voltage of the capacitor ... which is marked right on it ... DC voltage on it produces NO current flow through it.. Only AC 'appears' to flow through a capacitor, and even that appearance is bogus when you really get down to it.
Tears in the suns corona provide an exit for solar winds. Solarwind are a released stream of plasma from the sun.
correlation is a technique of correlating two signals with each other and producing the third signal. In correlation if two different signals are used it is called cross correlation and if same signal is correlated with itself it is called as auto correlation.
That would depend on the alloy (solder) you're going to use, as each filler metal has a different flow temperature. Some soldering irons and guns have variable temperature selections to accommodate various types of solder.
Some are wood, rubber, glass, ceramics and plastics.
Use a DPDT switch to reverse two phases. It does no matter which two.. You should also have a stop position, and you should place minimum time limits between starts.
towards the front left end of the fuse box it should be fuse number 12.
I assume you are asking about inductors.... The inductor has a winding, sometimes around a ferrous core. Current flow creates a magnetic field. When you try to change the current, the magnetic field changes, but that magnetic changing resists the change in current.. Mathematically, this is expressed...
A metallic strand or rod, pliable or stiff, used to conduct electricity. Sometimes electrically insulated, sometimes bare. Made in many lengths and diameters.
is 3 phase Meter electicity to for the measurement of elektricity 3 phase.
what are the applications of avr? AVR - also known as the "Automatic Voltage Regulator" - It is designed to automatically maintain a constant voltage level. - It regulates the sudden flow of electric current from AC supply to the PC. - It may use an electromechanical mechanism, or...
Different material welds differently depending on polarity. Thereare also different types of welding rods, so polarity must betested.
No. Power is measured in watts. Current is measured in amperes. Power is proportional to current under some circumstances , but not always.
There is no single 'formula' for this, as the maximum current a circuit can handle depends on the temperature the various components within that circuit can operate at, without deterioration. There are so many factors involved, such as the type of component, the type of insulation, whether it can...
hot motor are connected in star because it deals with the voltagein case small Power system, which the voltz could either drop orrise.
Current, no - Charge, yes - Although that charge becomes a current when you discharge it.. Capacitors have a residual voltage when power is removed, unless something (such as a resistor) is used to discharge that voltage.. The TV CRT (Picture Tube) is a VERY LARGE capacitor, with a VERY LARGE...
There are roughly 1800 initial lumens in a 18 watt T5 bulb.
Some times on/off valves are to large to be actuated using one solenoid valve,but most of the on/off valves are being actuated using only one solenoid valve
There are two main reasons we analyze an algorithm: correctness and efficiency. By far the most important reason to analyze an algorithm is to make sure it will correctly solve your problem. If our algorithm doesn't work, nothing else matters. So we must analyze it to prove that it will always...
Pure water, by itself, is not capable of conducting electricity.However, when other substances are added and ions make their wayinto water, those free ions can cause water to conduct electricity.
You want to accomplish whatever your work has set out to do. Learn whatever you need to learn to become a better worker so you can help provide for the community.
I am not 100% sure, but if you add the powder into a aqueous solution contaning electrolytes and compared the conductivity before and after you added the powder into the aqueous solution, it may display a difference in conductivity.
There is no such a thing as infinite resistance but it could be a very high resistance.
Ohm's law is I=E/R I= current E= Voltage R=resistance so yes they are related to each other using OHM'S LAW
All of them it depends strictly on the application
The diode is a unidirectional device it allows current to pass through it only when it is forward biased and does not allow when reverse biased when ac signal is supplied in the positive half cycle of the ac wave signal the diode will b in forward biase n in the negative half cycle it is in...
Answer . The best way to answer this question might be to consider the consequences if the input impedance was low: with a low input impedance, (signifficant) current would start flowing, and the amplifier would draw energy from the signal sources. None of the typical signal sources is designed to...
Fibre Optic cabling guarantees immnity from EMI and RFI as it carries the data in a light wave.
Age really irrelevant... number of hours used real criteria for life of unit. Not many high speed (1500 rpm) generators used past about 20-25,000 hours (can be about 3 Years if continuous base load) or 20-30 years if standby power only. Low speed engines (
No. B.tech is a bachelor's degree and it comes under graduation. actually speaking, it comes under "under-graduation". but after finishing the degree u'll be a graduate.
A TRIAC does not have a symmetrical turn-on point in the opposite quadrant. This will introduce a DC bias, which you probably don't want.. You can use an SCR, and then add diodes to allow it to operate in the opposite quadrant, or you can use two SCR's. Alternatively, you can use a DIAC in the...
why polarity test is important in DC machine
Milller's Theorem is used to simplify a circuit for circuit analysis. Instead of one impedance, which connectes two non-grounded nodes, Miller's Theorem allows this impedance to be broken down into two parallel impedances. One impedance can be seen as Z/(1-A) and the other impedance can be...
Loading refers to the phenomena that occurs when a load circuithaving low effective impedance is connected to a supply circuithaving higher effective impedance.
One ton of cooling capability is about 12,000 BTUH. 1.5 ton or 2 ton scales accordingly. One ton refers to the amount of cooling required to make one ton (2200 lbs) of ice in 24 hours. That is the background. Like auto horsepower, it has stretched a bit :o)
The fusing current is a value of current that causes the fuse to melt and interrupt the flow of current. Usually, reference is made to the minimum fusing current which is the smallest value of current that will cause the fuse to melt.
LEDs will typically reduce their light output throughout their life after an initial increase above the rated light output. This degradation will usually be a near-linear reduction. Well-made LEDs will not normally fail catastrophically, but drop in their output until they are no longer useful. ...
They are two things all together different.
The AAMA, or the American Architectural Manufacturers Association,advocates for manufacturers and professionals. One of its functionsis the publishing of quality standards for products.
Simply use it. The 240 volt breaker is rated to be able to trip 120 volts with no problem. Of course, pick an appropriate current for the size of the conductors. Naturally, if the 240 volt breaker is double pole, you have a problem, because that is not an expected configuration. Also, don't...
There are many different types of insulators. Fleece is probably the best insulator that I have tested. Wool is next. But I do not know about pure wool. The wool that I had had rayon in it, so pure wool might come out with different results.Cotton and vinyl are also good insulators. I tried to use...
A resistance standard is an extremely precise accurate resistor. They are typically used for calibration or laboratory purposes. They are commerically available from 100 microohms (0.0001 ohms) - 100 Terraohm (100,000,000,000,000 ohms) and are typically stable to 1-100 ppm per year for single value...
Current lags behind voltage when the load is inductive.. With a capacitive load, the opposite is true, with the voltage lagging behind the current, or the current leading the volage. (However you want to say it)
Firstly turn of the power before this test... Using a resistance or continuity tester you should get the following results: Short circuit: Very low resistance (nearly 0 ohms) or the bell will ring. Open circuit: Very high resistance (Somewhere in the range of Mega ohms) or the bell will not ring. ...
no, arc quanching power is more in acb vcb use for 6.6kv but acb for 132 and above
IN LAP winding,if connection is in started form conductor in slot,then connections overlap each other as winding proceeds till startng point is reached again. . IN WAVE type of connection winding always travels ahead avoiding overlapping.it travels like a progressive wave . IN LAP winding, no. of...
i would prefer ironhide,bumbleebee,sideswipe,optomus prime.in decepticon mixmaster,scrapper,barricade,devastator.yours truly hcd.
Use an inverter. A device you can buy. They range in price from \$20 and up. The one you choose will depend on the amount of current you wish to invert. . With an alternator.
For clarification, the correct symbols are 'MV . A' and 'MW' -where a capital 'M' represents 'mega'. A lower case 'm' stands for 'milli' -quite a difference. And the symbols for ampere and volt are an upper case A and an uppercase V. When an electric current flows through a load, the temperature...
Because the potentiometer has a linear curve for resistance.. This won't be true for non-linear potentiometers, such as in a volume control application, which needs to be logarithmic.