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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

Current transformer are used for measuring current in a bus bar without disconnecting it by means of ammeter.There are three types 1.bar type current transformer 2.toroidal current transformer 3.wound type current transformer
cant learn every individual move of the system but i know what thefuel cell will be good for
2 wire has a live wire to energise the field where as the singlewire alternator self energises and does not need the powered feed.
There are four basic factors of inductor constructiondetermining the amount of inductance created. These factors alldictate inductance by affecting how much magnetic field flux willdevelop for a given amount of magnetic field force (current throughthe inductor's wire coil): . 1. Number of turns in...
A: assuming a infinite current source the current will increase accordingly
It doesn't just happen in space. Stick out your thumb and look atthe background; as you move your hand toward you, the greater theparallax shift.
The best way to charge a battery from an AC source is to use a high-quality commercial battery charger that is of the correct voltage and charging profile for your battery. By "charging profile," I mean a charger that is matched to the battery's chemistry and amp-hour capacity. WARNING: Not every...
who invented conductors
Answer for USA, Canada and countries running a 60 Hertz supply service. In commercial and industrial installations it is important to have the whole building phased correctly. Usually these types of businesses are three phase. Three phase motors that have plugs on them for quick swapping in case...
A: ACTUALLY they are both the same just the application makes one or the other. Their function is to measure potential difference on a load or circuitry
The progression from Shockley diode to SCR is achieved with onesmall addition, actually nothing more than a third wire connectionto the existing PNPN structure. If an SCR's gate is left floating (disconnected), it behaves exactly as a Shockleydiode. It may be latched by breakover voltage or by...
An electrician works on small-scale repairs while an electricalengineer design, test, and oversee the manufacture of electricalequipment. Another Answer An electrician is a tradesman who has undergone a recognisedapprenticeship, and is responsible for installing and repairingelectrical...
A rather strange question, as most transformers are installed by trained individuals who wouldn't be using this forum for help. However, it will be necessary to refer to the manufacturer's specifications for that specific transformer in order to determine how to achieve the desired output.
A three-phase separator is used in the oil industry to separateoil, water and gas from a mixture.
the answer is not a lot as long as the circuit of any appliance is not damaged the ground is not in use.The ground wire is a safety it takes stray electricity away from faulty devices and into the ground.All houses and buildings should be wired with a ground wire.the ground wire is a yellow/green...
3 ohms. 9 volts across a 3 ohm resistor becomes 9/3 or 3 amps.
Any write has resistance and electrical energy is converted to heatand magnetism over any distance, but when the distance gets verylong this energy loss becomes significant.I actually think that AClooses less energy than does DC, which is why they use AC in thepower grid, why I don't really know. I...
Alessandro Volta in 1800
you would wire a float switch into the control circuit i.e, thecontactor coil (which is relatively low current but rated at leastfor the control voltage,, in most cases 120VAC). also in the samecircuit would be the overload contacts. if the overload tripsand/or the float switch opens then voltage is...
You just Calculate Size of Bus bar which has been mentionedbelow: Example: Calculate Size of Bus bar having FollowingDetails Bus bar Current Details: RatedVoltage = 415V,50Hz , Desire Maximum Current Rating of Bus bar =630Amp. FaultCurrent (Isc)= 50KA ,Fault Duration (t) =1sec. Bus bar...
you would need a motor starter/contactor with the contactor coilrated at your control voltage. the motor is wired through thecontactor main contacts and the control circuit wired into thecontact coil
float switches are not rated for motor currents, therefore youwould need a motor starter/contactor to handle to motor current andthe float switch would be wired into the coil circuit, i.e.,control voltage source.. I'm guessing 120VAC wired through thefloat switch to the contactor coil and the other...
Not much, yet. Homopolar motors work on a principle called the Lorentz force law, the same principle that makes a rail gun work. They are the most basic and conceptually simple rotary electric motors possible. You may also see them referred to as Faraday Disks, or unipolar motors. Because they are...
The charge in this case is simply the current multiplied by the time.\n The charge in this case is simply the current multiplied by the time.\n The charge in this case is simply the current multiplied by the time.\n The charge in this case is simply the current multiplied by the time.\n
A: Any amplifier will reach a frequency cut off point because of hindered circuit capability however the roll of bust be controlled especially when reaching oDB point must be at a -3 db roll off to prevent hi frequency oscillation
n India the demand of electricity per head is more than generationof electricity. Moreover till December 2011, over 300 million Indian citizens hadno access to electricity. With the growing population the demandalso increasing. However, generation of electricity is notincreasing at that pace. In the...
Current cannot pass through a dieletric material in a capacitor. Infact charge is induced at the second plate. In steady state no dccan flow. In transient terms a current flows but it doesn't passthrough the capacitor itself, charge mearly builds up at the secondplate. With ac this is happening...
An inductor resists a change in current. The equation is ... di / dt = V / L ... where di / dt is the rate of change of current in amperes per second, V is the EMF is volts, and L is the inductance in henrys. Looking at this, you can see that the slope of the current is proportional to the...
Soldering gun, blank pcb boards, Solder aka lead wire, copperwires, wire cutter, wire striper, magnifying class, computer,batterys, and transisters. Optional 3D printer, advanced circuitdesign program, and heavy machinery for designing parts.
Hydrogen fuel cells are very similar to batteries. They use a chemical reaction between atoms to produce their energy.. •It has two electrodes, an anode and a cathode, separated by a membrane. Oxygen passes over one electrode and hydrogen over the other..
Hi you can visit a website called campusoodle.com, lot of information about engineering colleges are mentioned like--- top colleges, cutoff, course list etc.... These are some of the good colleges affiliated to Anna University. [NOT RANKED] 1.SSN 2.PSG 3.A.C COLLEGE OF TECHNOLOGY 4.SAIRAM 5.R.M...
It only takes 6 mA across the heart to die. 10 mA through your body will make all you muscles tighten up and you will not be able to let go.
To either protect them against corrosion or to make them more attractive, or a combination of both.
A: assuming a power transformer the resistance of the primary will log in at approximately 15 ohm. But there are many types for many application so this rule can change.
The answer would be d 900Hz, because it is 900 is not 200 does not go into 900 evenly. The pipe will resonate a frequencies that 200 will go into evenly.
A 60 watt lamp uses 60 watt-hours in one hour, so it uses 480 watt-hours, or 0.48 kilowatt-hours in 8 hours. This is also the same as 1.728 mega-joules. (60 joules/second (watts) * 3600 seconds/hour * 8 hours)
The AC waveform is a sine wave which is above zero for 1/2 a cycle and below zero for the other half cycle. In a half-wave rectifier you essentially clip the negative so you have 1/2 a positive sine wave and then a 1/2 cycle of zero. In full-wave you effectively fold the 1/2 wave below zero to above...
it depands on switching overvoltage or lightening overvoltage.
Open loop control systems are one in which Output have no effect on input. Toaster,Washing machine and a Dc motor are the examples. Consider an example of a dc motor, Due to voltage input it rotates a Shaft what happen if the load on shaft increases ???do you get the same output on same input?...
... in CE config.. as Vo=Vcc-Ic Rc nw as Vcc is const. v cn say Vo is directly proportional 2 (-Ic Rc) so nw when d base voltage is increased Ib will inc. thus, Ic will inc. cuz Ic=beta Ib thus Ic Rc drop increases... as Vo is prop 2 -Ic Rc thus, Vo will decrease...thus d curve for d +ve half cycle...
it has the capacitive properties .
1,it has uniform scale 2,with a power ful magnet its torqe to weight ratio is very high so operating current is small 3,the sensitivity is high
Your power supply unit, PSU. Takes AC power and distributes so much power to each connector. Each PSU, depending on the wattage of the unit gives each connector so much voltage. Each connector is designed for a certain piece of hardware that requires different voltage.
The power dissipated by a resistance ' R ' carrying a current ' I ' is [ I 2 R ]. I 2 R = (4.5) 2 x (3.5) watts = 70.875 joules per second 5.5 minutes = (5.5 x 60) = 330 seconds Energy = (power) x (time) = (70.875) x (330) = 23,388.75 joules
A: impressed voltage is a mechanical connection involved induced has no mechanical connection except for proximity
That depends on what you call "high". Whether or not you consider it high, the current is the same all the way around a series circuit.
Michael Faraday invented electromagnetic on 29TH of August1831. . ADDED: He didn't "invent" it but discovered its principles.
You unplug it and plug it back in
That's a 3 phase receptacle. Normally you can wire each phase ontoany terminal. The only thing is if there's a rotation involved inthe thing that your wiring you need to change any of the two wiresto change the rotation.
R=(rho * distance) / cross sectional area
.183A or 183 Milliamps. Power/Watts Divided by Voltage will giveyou Amperes
Electric current has to flow in a closed circuit because, if it were not closed there would be no place for the current to flow. You could transfer charge, certainly, but you would not be able to sustain a current. Look at Ohm's law: voltage equals current times resistance - an open circuit is...
The most common way is to be ignited and burnt in an internal combustion engine, thus giving mechanical energy.
Two voltage sources in series can either add up or cancel out depending on which way round they are orientated. If the two positive or the two negative terminals are connected together, the overall voltage is the subtraction of the two. If the positive terminal from one supply is connected to the...
For DC circuits: R = l*p / A R - resistance l = length of the conductor p = electrical resistivity A = the cross sectional area Calculating for AC, and especially three phase power becomes much more complicated. If you need to know more for AC, let me know specifics.
What about them!
what level of maintenacne is found at the forward support company
importance of statistics in electrical engineering
In a distribution transformer's star-connected secondary, the common point of connection is called the 'star point' and is connected to earth. The star point then provides the neutral connection for the transformer secondary, providing a return path for any unbalanced currents due to an unbalanced...
They r called universal gates as they can be used 2 design all other logic circuit elements like XOR,NOR,etc. also these gates can be realized through easy combination of diodes thus making them easy 2 use base elements in any chip designing project.
You can not change AC into DC using a transformer. A transformer changes the voltage levels. To change AC into DC, you would need a rectifier. To change that into smooth DC you need a capaciter and a voltage regulater
Resistivity of conductors increases with temperature, with semiconductors it is opposite, I believe always - but don't take that as truth! Look up the temp coefficient for whatever material you're dealing with - if it is positive, the resistance increases with temperature; if it is negative it...
The primary winding of a transformer is connected to the supply, while the secondary winding is connected to the load.
The type of RFID tag you are referring to is likely a passive device. It gets read by stimulating it with a certain RF frequency and then looks for a unique return. Hence the tag life is essentially forever.
Capacitor is a physical object. Capacitance is a measure of the electrical charge stored (in a capacitor).
It is used for slicing foods with less physical effort and it makesneater slices. The knife part is two serrated blades that areclipped together.
When an electric current flows through a purely resistive load, the temperature of that load increases above that of the surroundings, and energy is lost through heat transfer. This energy loss is permanent and, in AC circuits, the rate of this loss is referred to as true power which is measured...
\n. Pumps, lifts and conveyer belts
Coaxial Qr is a coax cable that has been developed to met thedemands of broadband or internet. At the moment it is considered tobe the best of all the coax cables out there as it is very flexibleand reliable.
A switch opens or closes an electrical circuit. A limit switch is a switch that is arranged to open or close an electrical circuit when a physical parameter is at its limit. Often, the limit is physical travel, such as a limit switch that prevents an electro-mechanical device from operating beyond...
A: LEDS are basically a diodes.So yes they can be strung right across the AC line. Unfortunately the reverse voltage is very low and tend to leak at hi voltage. the design should provide protection for the reverse voltage with resistance across each to equalize the leakage current otherwise it will...
Inspection and checks to ensure no mistakes are made, so that thesafety of equipment and the user is ensured..
Start from scratch employing an utterly emptyarea, or select a pre-designed area from our set of templates orsaved styles. Once you've got your house, begin to fill it alongwith your favorite kitchen cupboards, worktops and accessories.You'll even go to this point on add lighting, chairs and...
To supply the current needed to develop some horse power to turn over an engine.
DYn 11 is a Delta HV winding and star lv with theneutral brought out. At primary substations it is usual to have a neutral ct. The ct is a last line of defence operating a standby earth fault relay which opens the lv circuit breaker (11kV). It may have a stage 2 setting in case the lv breaker fails...
It works normally. Well actually there are 380 volts across twolines of a 3 phase AC source, so it should work normally.
to transfer large blocks of energy over long distance, which equal to half of electromagnetic wave length. (at 50 Hz approximately is 3000 km.)
the swing bus is selected bus that has a fictitious generator with a p.u magntiude and phase angle equal zero ..in the power flow calculations ,The extra required energy or excess energy in the power system is managed by the generator of this bus.( supply/absorb p&Q) In order to achieve the balance...
An open loop system is simple and straightforward, requiring fewerphysical or logical connections as the closed loop design. It lacksthe feedback offered by closed loop designs. As such, it is oftenconsidered inferior to a closed loop design. A closed loop design assures the initiator that the...
LA is short form for Lightning Arrestor
It resist the flow of current according to the resistance value.
Your pool pump should be on a GFCI breaker if it was properly wired. What you have is a current leakage problem possibly due to moisture leakage getting into the windings of the motor. Rectify this problem before using the pool. If you don't have GFCI breakers protecting the pool pump and normal...