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Electrical Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.
23,056 Questions
Why my Wireless connection is not working on my laptop?
First thing to do - check wireless is turned on. It sounds basic, but sometimes the switch can get knocked, meaning that the laptop won't recieve any wireless signal. If this doesn't work, play around with the settings for a while - if you're running Windows you can go to 'network connection' in Control Panel and right-click on your wireless connection; go to 'repair' and the repair wizard will go through it to try and fix it. Make sure both the wireless switch on your laptop is turned on, and that your modem is turned on too.
If this doesn't work, go to your modem's setup page (usually a web page - the address will be in the manual) and choose a different wireless channel - 0, 6 and 11 are the only non-overlapping channels. You may want to adjust your wireless signal power to make sure you have enough signal. You might also want to run a diagnostic on your modem to see if it is running properly. Some modems will display on the setup page which computers are active. See if yours comes up.
If this still doesn't work, you may want to go to an internet cafe or other wireless hotspot to check whether it is your modem which is at fault. If you get a signal and can connect, then it may well be the modem at fault. Check at some other locations just to be sure. If not, it sounds like the wireless card has a problem. If it is an internal wireless card, you might want to take it back to the manufacturer for repair. If it is an external wireless adapter, you may just want to replace the card or adapter to see if this helps.
How do you measure the power by 3 voltmeter method?
first we connect the 3 volt meter in three loads then we measure the voltage and find the resistance of the loads then put the formula p=v/r
so in this method we get the power by using 3 volt meter ....(prashant)
12/1.5= 8. If I = Current from 1.5 Volt source and I2 = current from 12 V source then
I = I2/8 or said in another way the current from 1.5V device is 1/8 of the current from 12 V device.
There are no BTUs per horsepower. A British Thermal Unit is an archaic unit of measurement of energy, whereas a horsepower is an archaic unit of measurement for power. As energy and power are two different quantities, you question is akin to asking, "How many miles are there in a mile per hour?"
The reactance of an inductor depends only on its inductance and the frequency.
The voltage and any series components are irrelevant.
Z = j 2 pi f L = j 2 pi (100) (0.5) = 314.16 ohmsreactive
What is used in an electrical circuit to prevent a short circuit?
difference between p type and n type semiconducter material
AnswerInsulation is used to prevent a short current. To protect the circuit should a short-circuit fault occur is either a fuse or a circuit breaker.
What is an alternate set of units using Ohms law for V equals IR?
The most common unit systems for electromagnetic problems are MKS and CGS; [meters, Kilograms, seconds] and [centimeters, grams, seconds] respectively. But any self-consistent unit system will work with ohm's law. Just check to make sure the units cancel properly on both sides of the equation if you're not sure.
What is the equivalent resistance of the parallel circuit you have connected?
In principle, it is infinite. I have not connected a parallel circuit in ages.
What is the maximum neutral current for a three phase delta star system?
It is either a delta or a star, it can't be both. A delta system doesn't have a neutral so the question must be about a star system. A high neutral current happens for example when one line is disconnected, and the neutral current then equals the current in the other two lines, which is the same current as when two lines are disconnected leaving only one line.
There might be ways of calculating how to make the neutral current larger by using unusual power factors, but the above is a useful working maximum that allows all four wires of a four-wire star system to be the same size.
AnswerThe term, 'delta-star', refers to a three-phase transformer connection in which the primary windings are connected in delta while the secondary windings are connected in star (wye). This is the standard three-phase connection, in Europe, for distribution transformers. Single-phase loads are connected to the secondary between alternate lines and neutral, in order to try to and balance the resulting load and minimise any resulting neutral current. Obviously, however, without having any specifications supplied, it is quite impossible to answer this question.
What are the phases of Uranus?
As seen from Earth, Uranus has no phases.
That is because from the Uranus orbit, 19.22 times as far from the Sun as Earth is, Earth appears to be right next to the Sun. So our perspective is almost the same as the Sun's - which would obviously "see" all planets as completely lit up.
Even with powerful telescopes, it would be very difficult to see Uranus as anything but a fully lit hemisphere. In order to see the night side, we must send spacecraft beyond the planet, then look back toward it.
As it turns out, only Mercury, Venus, and the Moon have a full set of Phases as seen from Earth.
Mars has a (very) partial set of phases, as it is beyond Earth orbit as well, but only by 1 1/2 times, so there are moments when the two planets are about 1/4 of an orbit apart that one would see (again, with a very powerful telescope) a crescent of darkness, before Earth changed position and only could see the fully lit side.
Working of choke in tubelight?
The choke works as an inductor(filter) induced 850V to 1100V in starting,by strarter make and break of the circuit. After glowing the tube light choke work as inductance and provide 110v to circuit, here the function of starter comes. It helps the chocke to brek from the circuit and to 110v from 850V.
thankining U "Nikki"
408 volts x 1.73 = 277 volts is the star ( Y ) point of 3 phase 480V. A transformer connected in a Delta configuration is different than a Y or Star configuration. 277 volts is a voltage that is used in industrial plants usually for lighting. The following link will explain the whole star delta connection. http://www.allaboutcircuits.com/vol_2/chpt_10/6.html
What is the Formula for series and parallel?
you need to be more specific but my guess is your referring to ohm's law the basic formula is Voltage(V)=current (intensity (A)) multiplied by resistance (Ohms). the formula can be reversed to calculate intensity using voltage divided by resistance or to calculate resistance using voltage divided intensity. an easy way to remember this formula is to make a triangle like this and cover the value you want to find the two bottom ones multiply and the top one gets divided. / \
/ V \
--------
/ I : R \
-------------
If you have four batteries in series what is the output voltage?
depends on the voltage of the batteries..
four 12 volt car batteries would output 4x12 = 48 v
How do you design a multilevel inverter?
the design of multilevel inverter can be done by using is the mosfets ....multilevel inverter is the inverter which cna reduce the harmonics by increasing the voltage levels
ANSWER: The design of multilevel converter is the same as a single converter. The feedback control however comes from the most hi current output capacity circuit.
pass by
What are the chances of a dehumidifier causing a fire?
A working dehumidifier will not cause a fire if it is working and connected properly. They are no more apt to cause a fire than any other electrical appliance. If the unit overheats it will shut off on the internal overload protection. If it draws to much electricity from the outlet, it will trip the circuit breaker. Those items will prevent a fire. A dehumidifier does use a fair amount of current, so the plug will get warm (not hot), to the touch. If the unit is working, stop worrying about it. It will be fine. Lightning causes many more home fires than dehumidifiers.
This is the general description of how a circuit breaker operates.
hello i discovered answer:
Assessing the scope of a model, that is, determining what situations the model is applicable to, can be less straightforward. If the model was constructed based on a set of data, one must determine for which systems or situations the known data is a "typical" set of data.
"magnetic" "levitation"
A cute way to make trains float - thus reducing rolling friction, but NOT air friction.
Is the ampere a unit of quantity or a unit of rate?
Nowadays, the ampere is considered the fundamental unit, and the coulomb is the derived unit. In other words, the coulomb is the amount of charge delivered in one second by a current of one ampere.
AnswerThe coulomb has never ever been considered a Base Unit in either the SI or earlier metric systems. The ampere has always been considered a Base Unit. Prior to 1948, the ampere was defined in terms of its chemical effect; after 1948 it was defined in terms of its magnetic effect -i.e. in terms of the force between two, parallel, current-carrying conductors. So, the ampere has never been defined as an unit of rate. On the contrary, the coulomb is a Derived Unit, based on the ampere and the second.What is the Working principle of auto transformer?
An autotransformer (sometimes called autoformer)[1] is an electrical transformer with only one winding. The winding has at least three electrical connection points called taps. The voltage source and the load are each connected to two taps. One tap at the end of the winding is a common connection to both circuits (source and load). Each tap corresponds to a different source or load voltage. In an autotransformer a portion of the same winding acts as part of both the primary and secondary winding. Operation he ratio of secondary to primary voltages is equal to the ratio of the number of turns of the winding they connect to. For example, connecting at the middle and bottom of the autotransformer will halve the voltage. Depending on the application, that portion of the winding used solely in the higher-voltage (lower current) portion may be wound with wire of a smaller gauge, though the entire winding is directly connected.
1 kW = 1000 watts. Formula is Watts = Amps x Volts. As you can see to give you a answer I need a value for volts. Transpose the formula to read I = 1000/volts.
