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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

Can RTD Cable and Thermocouple cable shall be laid in a common cable tray?

Yes

You should be careful with power cables nearby and make sure they are shielded

www.peaksensors.co.uk

Can a multimeter test for continuity in an invisible fence?

Yes, in the buried wire. You'll need to put one end of the probe lead on one end of the wire and the other end on the wire past the point that you think may have a break in it.

How do you excite an alternator?

Please clarify. Are you trying to make it charge? Year, make ,model, engine size helps...

What does 'fifth phase' mean in Rugby?

when a player in rugby union is tackled with the ball they try to recycle it i.e. give it to their team mates, either via a ruck (if the ball is on the ground) or via a maul (if the ball is held in the air) if the player does this successfully it is known as a phase. The 5th phase is the 5th time the ball has been recycled without the opposition getting their hands on the ball or play being stopped by the referee.

What are the advantages to the maglev train?

MagLev (or magnetic levitation) trains have no moving parts and therefore need much less maintenance and are nearly silent. They run on superconducting magnets and don't require all of the fuel that current trains do and reduce the amount of carbon dioxide released into the atmosphere. The superconducting magnets are run alongside each other. This would mean that for the train to stop running both magnets would have to fail in the time it would take the train to reach the next stopping point which is only a few minutes. The probability of this happening would be less than once in millions of years of operation.And I like the way it looks!!!!!!!!!

The electromagnets that are used in the train are easily turned of so there will be hardly and chance of missing your stop. They also go 359mph. Three times the speed of an average car.it also has less friction

henrymeadstinks.

How a generator operated by boiler?

The boiler heats water into steam. The steam is pressurized and fed into a turbine which causes it to rotate. As the steam turbine rotates, the connected generator rotates and produces electricity. Make Sense???

Please 'Recommend Contributor'

What is mva?

In electrical engineering it can be millivolt amperes, unless it's MVA then it is megavolt amperes. Such as in the use of large transformers.

What Supplies were used on the mayflower?

bombs, knives, and guns pretty much but also they had alot of food mostly meet with salt so that the meat would not dry out

Where is the Amplifier?

If you mean the Ignition Amplifier - it's a small rectangular Electronic part attached to the inner wing behind the battery - Bosch Part - about �50 to replace, they seem to go wrong at around 10/14 years - easy plug in replacement but use the heat sink conducting paste supplied with a new unit If you didn't mean the Ignition Amplifier - well - ignore all I've said.

What are the 4 wires on a 97 Lincoln mark VIII electric fan used for?

One wire should be a 'hot' wire, one 'ground' and the two remaining wires would be a 'low' and 'high' speed. I believe that the Lincoln Mark VIII electric fan is a 2-speed fan. The four wires probably have something to do with the 2 circuits required for the 2 different speeds.

What is the current value of a good conditioned Springfield 67F 20 gauge?

I just bought one through a friend that was marked $199.95 on the gun shop shelf, but I got it for 25% off of that.

The question is what size motor does a 1990 Chevy Lumina 4 door have?

Well, I have a 1990 Lumina Euro, 4 door and it has a 3.1 in it. Yours should have the engine size on the block. Mine does. Just pop the hood and look on top. :o)

Why does the AC work when driving but drops when idling on a 1986 Suzuki Samuari in which you installed a 1995 Suzuki Sidekick 1.6 a6V?

The fact that the engine was replaced should not be an issue. Here is my assesment based on your question; either the ac system has a smaller capacity (smaller compressor, condenser, receiver dryer), and for that reason while driving you get a higher flow of freon thru the system compared to engine at idle, or there may be some debris in the system causing a restriction, not allowing enough flow of freon thru the evaporator. Once again, if you are driving, the compressor will spin at a faster rate and therefore provide more flow of freon thru the evaporator, therefore the cooler air.

It is also possible the pulley on either the crank or on the compressor is the incorrect size.

1994 galant motor revs up and down motor runs great except the reving what can it be oxgyn sensor you have heard many things but nothing worth trying?

Run a diagnostic test, if you have a bad oxygen sensor the computer will display the code that indicates the oxygen sensor is bad. Usually irregular idle speed is caused by a vacuum leak or sometimes the AC circuit speeds the engine a little when the AC clutch is engaged. The AC compressor is used by the defroster inmost vehicles to dry the air, so just because it's winter don't think your AC isn't comming on. Simple answer, no, it's probably not the oxygen sensor. Many people have no idea what they are talking about. It could be the EGR valve, but that would typically be controlled by something else that might be causing the irregular idle speed. If it idles super slow sometimes, check for a faulty EGR valve, but most often a high idle speed is caused by vacuum leaks. TRY REPLACING THE THROTTLE POSION SENSOR ITS LOCATED RIGHT ON THE SIDE OF THE THROTTLE BODY WERE THE ACCLARATER CABLE HOOKS UP

Low voltage indicated on gauge but Auto store tested charging system and found voltage normal?

sounds like you have dirty field points on your alternator or your voltage regulator is going bad. Replace your voltage regulator in your car first, they usually only cost like $20-50. If it doesn't fix the problem take it back. Then have your alternator checked out by a store that only does alternators... This is provided you haven't changed any idle pulley sizes, if you have your under the RPM's required for that alternator.

How do you change motor oil 2006 Harley Sportster 1200 custom?

Lay underneath the bike on the left side, and look towards the front of the bike, there will be a tube that runs from the back left side of the motor, to the right straight into the side of the frame with a hoseclamp on the end of it. to make sure you have the right rubber line, IT IS THE ONLY LINE WITH A HOSECLAMP ON THE ENTIRE BIKE. loosen the hoseclamp, and then pull the line off the frame (There is a stud welded on the frame, and this hose slides over it, and then the hoseclamp seals it off) This is your drain tube. Make sure the motor is warmed up *(of course) BEFORE you change the oil, let it drain until it's empty. MAKE SURE YOU STAND THE BIKE STRAIGHT UP, OFF THE KICKSTAND FOR ABOUT 15 SECONDS TO MAKE SURE IT ALL DRAINS OUT. Then put it back on the stud, and tighten the hose clamp. Loosen the filter on the front of the motor (it's a spin on car-type) Then replace it, make sure you put a thin film on the gasket of the NEW filter before replacing. It is normal to get oil on the front of the motor, it is unavoidable. it will hold 3 qts with filter.

How do you replace fuses on a 1991 miata?

Locate the fuses - in the fuse box under the dash - driver side , only replace burn fuses - they pull out with pliers , there are also fuses under the hood

What is the difference between weight loss and loss of size?

There really isn't much of a technical difference between loss of weight and loss of size. As you lose weight your size will naturally become smaller. But do keep in mind that muscle does weigh more than fat.

Many people make the mistake of not eating anything to lose weight (dangerous idea!) and in turn lose a lot of their muscle mass. It is important to preserve muscle mass while you are loosing weight.

Consuming lots of protein and lifting weights is the best way to build muscle, while the best way to lose weight is to consume less calories and exercise several days a week. So be sure to consume the proper types of protein (fish, turkey, chicken and other lean meats) and try to stay away from high calorie dense food.

What are RFCs?

RFCs are documents that detail protocols, standards, and information that define the internet.

What is the basis for selection of aircraft power system?

Assuming you are referring to the electrical power system:
Weight
Light weight inductor cores on alternators, solenoids, transformers etc. The compromise is 400c/s AC 3phase.
Low weight conductors, minimal volts drop over distance, compromise 115volts
Stability
115v 400c/s within mechanical feasibility of reliable constant speed drives for alternators. 12pole/6000rpm.
Versatility
For DC systems 24v is the minimum for acceptable volts drop over wiring distances encountered. Batteries can be small and light. Some compatibility and backup capability with the 26v 400c/s instrument systems.
Safety
Voltages within safety capability of insulation exposed to a wide environmental range of temperature, humidity, vibration, and aircraft fluids. All safety systems able to detect and trip 'out of range' voltage, current, frequency, and earth faults.
Terminations, plugs and sockets have to be selected for the aircraft environment and to consider security and corrosion.
It is a system that has evolved from years of learning from experience.

What is used to measure temperature?

Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)

How does the ground reduces the noise in electrical circuits?

A grounded metal shield that is around a signal wire prevents outside electric fields from reaching the signal wire. This is because electrons are free to move in a metal and the electrons in the metals surface move in response to the outside electric field. Below the metal surface the electric field is canceled by the field created by the electrons that have been drawn to the metal surface by the outside field, which is the noise source. Since the signal wire is within the metal cage it does not receive the noise.