Electrical Engineering

Settling Time and the Real roots of a system are related reciprocally.

Parallel circuit: The fact that the voltage is the same follows from Kirchoff's Voltage Law.

Series circuit: The voltages of the individual resistances must add up to the total voltage. This, too, follows from Kirchoff's Voltage Law. If the resistances have the same values, all of them will drop the same voltage (which, of course, will be less than the total resistance). But if they are different, Kirchoff's current law tells us that the same current must flow through each resistor in series - and the voltages will be different in this case, according to Ohm's law.

If the slab is zero thickness, nothing. The lines of electric field not intercepted by the slab are unaffected, so what goes on there is unaffected. The part where the lines are intercepted is converted to two capacitors in series, and the charges on opposite sides of the slab are equal and opposite, equal to the charge on the parts original outer plates facing it. From the outside view of the world, nothing changes on the outer plates, so the capacitance is the same. If the plate is not zero thickeness, then the capacitors on that side become higher and so the total capacitance will increase, with significant distortions of field lines.

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For a parallel-plate capacitor with small spacing, so that fringing can be neglected, with a flat slab of dielectric, the new capacitance is easily calculated by noting that the electric flux D is continuous, and in the volume occupied by the dielectric the E-field is reduced by a factor equal to the relative permittivity. Thus the voltage is reduced for a given amount of charge and the capacitance increased.

If the plate area is A and the spacing is s and the dielectric thickness d, then with a charge Q on the plates the electric flux is just D = Q/A. The electric field on a line between the plates is D/eps0 in the air and D/(eps0 x epsr) inside the dielectric. Therefore the voltage is D/eps0 x (s-d) from the two air paths plus D/(eps0 x epsr) x d from the dielectric path.

So the capacitance in this case is given by:

C = A x eps0 / [s - d(1 - 1/epsr)]

So if d=0 or epsr=1, as they are when there is no dielectric, the capacitance reverts to the standard formula for parallel plates:

C = A x eps0 / s

It's almost impossible to get to - at the very bottom of the lower radiator on the left (driver) side. Easier to pull the lower hose to get the coolant out.

You can't measure an RLA. It is determined by the factory that manufactured the compressor.

To answer your other question, a 230 volt load is actually using both legs as part of the circuit, so you can measure either leg with a current meter but there is no need to add them up.

• It Takes about $45,000 to build and get it running.

You would need a Video card with DVI port and a cable with a DVI connector on one side and two DVI/Analog connectors on the other side.

It doesn't really matter which way around you use a transformer, the primary winding is ALWAYS whichever winding you connect to the supply, and the secondary winding is ALWAYS whichever winding you connect to the load. For either connection, the turns ratio will ALWAYS equal the voltage ratio for an ideal transformer (or close enough for a real transformer).

gas

They all take gas or diesel.

RV generators have about three times the horse power as generators in that size range (portable) and run at around 1800 rpm., which is much easier to muffle. They also have electric start. They cost way more then a portable of the same size. And they operate much more efficiently. The best thing is how much quieter they are compared to a portable. Compare the specs of an RV generator to one of the same size. Way different. 45db @ 20ft!

An RV generator is one that was designed to be installed in an RV. Has a special cooling system. To allow it to be installed in the small compartment. Most of the older ones are 1800 RPM the newer ones are 3600 RPM. But they have covers that make them as quiet as the 1800 RPM units. Portables were not intended to be installed in RVs. Plus at 3600 RPM which is the speed of most of them. You would not want them around a camp site.

In theory A diode clamps 0.7 volts across it but in practice the number is not exactly 0.7 volts because it can not be controlled. This is only the case with Silicon Diodes (clamping 0.7 volts), as Germanium ones, ideally clamp 0 Volts, but in practice it is not exactly Zero.

Basically, in practice it is not exactly 0.7 volts but when doing theory one assumes it to be 0.7volts for ease of operation.

This is actually called a single phase half converter and it is used to have an adjustable DC output voltage. It is like a bridge rectifier but two of the diodes are replaced with a solid state switch, SCR for example, and there is also a freewheeling diode in parallel with the load. A half converted can have an output voltage that is adjustable from 0.9*E to 0 volts. It does this be adjusting the firing angle of the switches. There is also a full converted and the difference is that it has an output voltage from + 0.9*E to - 0.9*E volts.

Commercial electrical customers are billed a demand charge as part of their electrical bill. The idea is that if the customer's peak instantaneous KW usage (demand) is high, the utility has to provide large enough generating and transmission capacity, which costs money.

Controlling maximum demand lowers the electric bill, saving the customer money. The act of doing so is called peak shaving, and is usually accomplished by turning off non critical loads or providing onsite co-generation to reduce utility consumption to prevent a new peak from occuring.

Transformer LTC's are spec'd as being a certain percentage of the total - very often +/- 10%. So if you have a transformer with a primary of 100kV and a secondary of 30kV nominal with a lowside LTC, the LTC can adjust the lowside from 27kV - 33kV.

Depending on the type of LTC, there may be different number of steps for this 20% range. Usually these are broken up evenly, so if you have 33 steps - up 16, down 16, and a nominal tap, each tap is 1/16th of 10 percent of nominal lowside voltage; in this case 187.5 volts.

it will be implemented soon...planning is in progress

There isn't, the contacts in a circuit breaker are plated with silver.

because of its high break down voltage.

A capacitor is made by taking two sheets of conducting material and placing a non conductor between them. The sheets are then rolled up. A wire is attached to each sheet. One sheet is charged positive, the other is charged negative. A piece of equipment is placed between them. When a switch is thrown the positive and negative charges combine and all the electricity goes through whatever piece of equipment is there.

In the third or maintenance phase, the patient is relatively stable and can be kept indefinitely on antipsychotic medications. Even in the maintenance phase, however, relapses are not unusual

About one-third of newborn babies have temporary birthmarks classified as nevus simplex. These pink birthmarks are commonly known as stork bites or salmon patches.

96 kW means 32 kW from each phase. If the load is star connected each resistor has 277 volts across it and carries 32,000/277 amps, 115.5 amps. The load resistors are 277/115.5 ohms or 2.40 ohms

If the load is delta connected each resistor has 480 volts across it and carries 66.7 amps. The load resistors are 480/66.7 ohms or 7.20 ohms.

In both cases the line current is 115.5 amps.

A substation is not a load but is a place where switching and voltage-level changing takes place. Accordingly, you cannot apply a 'power factor' to a substation.

Tri Fuel power generators can be operated using natural gas, gasoline or propane and it does not take too much effort to switch from one fuel source to another. There is not much mechanical work required in order to use the source or even to change the source from one type to another.

The rotor is manufactured from a stack of circular silicon-steel lamination clamped together around a shaft, with open or closed slots running along the length of the rotor through which the rotor conductors ('bars') pass. The rotors are then interconnected at opposite ends with conducting end-rings. In some cases, the rotor bars are poured into the (enclosed) slots as molten metal. If the bars were visible, they would resemble a gerbil's exercise wheel.