Electrical Engineering

Depends on where you live and the condition of the vehicle. Go to www.nada.com for the current value of your car. I say "priceless."

tps will be located other side ofthrotle to accel cable check for clean connection at tps plug replace tps unless you can test unit dave.cop

Core loss is also called "No-Load" loss. To measure the core lose simply you need variable AC supply, Wattmeters, Ampere meters and Voltmeters. The basic principle to perform this measurement is to supply the transformer with its nominal voltage and then record the Watt or Kilo watt values. You will need precision current and voltage transformers to supply your wattmeters, voltmeters and ampere meters. There is a term called "Form Factor" which should be measured in order to identify how sinusoidal is your supply voltage and based on the value of this Form Factor you need to apply relevant corrections to the measured values. For power transformers normally we record no load values between 90% and 110% of rated voltage. Based on the test circuit configuration you may use "2 or 3 wattmeter" arrangements for 3 phase transformers. For further information you can check out my website at www.eonce.com and if you need more information you can simply fill the form in "Contact" page on the website. Hope this helps. B.M. Mirzaei, P.Eng.

A short to ground means there is very little or no resistance between some electrical device and ground. A "dead short" would be no resistance at all. This causes very high current which blows fuses and causes overload protection devices to trip out.

This is always being studied. For frequencies below microwaves there appear to be virtually zero effects.

A 6kVA generator puts out 4.8kW (4800 watts) with a power factor of 0.8

Formula

w (watts) x pf (power factor) = VA (volt amps)

This generator will be able to draw a load of 20A (amps)

6kVA = 6000VA. Where watts is only a measurement of "real power" used (eg: Heater element) VA is a measurement of total current that will flow through a circut. (eg: capacitor) A capacitor does not use power (kW) but current does flow in a circut where capacitor is connected. kVA ratings would be used to size cables.

Electric company high voltage transformers used in the utility grid are typically insulated by being immersed in a tank of oil, and cooled by natural convection (circulation) of the oil. A "dry type" transformer is not immersed in oil, and is cooled by air convection or by fans.

In some areas they are for preventing the power lines from hitting together and starting a fire. They also increase the visibility of the lines to helicopters etc.

The higher the frequency the higher the RPM the motor will turn

Capacitors in series: (1/Total) = 1/A + 1/B 1/Total = (B + A) / AB Total = AB/(A+B) = (Product)/(Sum), if only twocapacitors in series. We have 4uf and 6 uf. Product = (4 x 6) x 10-12 = 2.4 x 10-11 Sum = (4 + 6) x 10-6 = 1 x 10-5 Product/sum = (2.4 x 10-11) / (1 x 10-5) = 2.4 x 10-6 = 2.4 uf ======================================== Easier:Total = product/sum = (4 x 6) / (4 + 6) = 24/10 = 2.4 uf

A fuse or circuit breakers purpose in a circuit is to disconnect the circuit load from the voltage source when a circuit fault occurs.

The three coils are actually called UVW. They are called that because they are for the three phases of a 415v supply.

Conductive coil.

For a given load, the higher the supply voltage, the lower the resulting load current. So high voltages are essential for electricity transmission, in order to avoid enormous voltage drops, a need for conductors for huge cross-sectional areas, and to reduce line losses. Actual transmission sytem voltages are determined by the electricity-supply standards used in the country in which you live.

The voltmeter is connected in parallel between the two points whose potential difference is required.

The key is the door bell specification. They typically run on a 24 VAC transformer. You can certainly hook it up and try it with 9 volts, but it probably won't work as intended. 24 Volt transformers are relatively cheap.

A piece of Medium Voltage switchgear, commonly referred to as a "Ring Main Unit" (RMU), It reticulates power to other MV pieces of equipment such as transformers.

Motor Circuit Analysis (MCA) is to ascertain the health of the motor on-line, and is accomplished through detection of electrical imbalance and degradation, resulted with shortened motor life and unsafe operation.

It consists of on-line current and voltage analyses as well as off-line insulation, induction, and capacitance measurements.

SMPS = Switch Mode Power Supply

Here is a link to help you out:

http://www.nanaindustries.com/html/SMPS.html

Generally, yes, although it depends on a number of factors.

A general way to answer your question is through demonstration: do cell phones (which run on rechargable batteries) charge while on? I've never seen one that doesn't, and the same applies to laptops. As long as the apperatus can be plugged in while battery is still in use, it probably can.

There are many. One example is plastic.

to expand first are the ceramics, then glasses, finally plastics.

Current is the flow of charged particles called electrons through a conductor. Since we can't observe individual electrons to imagine how they flow, assume you have a large vat filled with water. Imagine that each molecule of H2O is an electron. So the vat is storing a lot of "pseudo electrons" in this analogy. Now assume you have a valve at the bottom of the vat. If you open the valve a tiny bit you have a large, but finite resistance to the flow so you have a small "current". If you open the valve more you decrease the resistance and thereby increase the flow.

Diodes are not perfect devices. When current flows through a diode, it offers some resistance. And the resistive characteristic will cause the generation of thermal energy - which is heat. Diodes come in different "flavors" or types, and they also have ratings. These ratings include the amount of current they are capable of carrying, the reverse voltage they can withstand, and some other characteristics. In the case of zener diodes, they have a current rating, a breakdown voltage rating, and a wattage rating that speaks to the amount of heat the package can dissipate. If we look at something like a rectifier diode rated at, say, a hundred amps, it will be stud mounted. Additionally, there will be specifications regarding the size of the heat sink onto which it is fastened. Again, these diodes will generate heat because their forward resistance, while low, is not zero. Even at a fraction of an ohm of resistance, at a hundred amps, there will be some heat generated when the diode conducts. The devices will need to be bolted up to a pretty heavy plate of aluminum to give the heat some place to go.