Electrical Engineering

Preguntale al maestro de motores 2 el chamo

The same as stealing anything else.

With the exception that you're deeling with high voltages and power. To steal electricity, you'd need to modify or create a connection to the electric grid. Depending on the magnitude of power you pull, this can be detectible by the power company immediately, or will be detected given enough time. But the main point is you have to get close to the line, which is a bad idea to say the least, unless you are trained, and have the proper protective equipment.

Besides this, you face prosecution when (not if) caught.

The phase shift from input to output is 180 degrees, which is just another way of saying the signal is flipped in polarity. What the phase shift means is that as the input starts going positive, the output starts going negative. The phase shift is due to how the device works in that configuration. Let's say it's operating in class A where the device is never cut off or reaches saturation during a full cycle of the input. The base is static biased to have the device running in the middle of its operating curve. It idles as some nominal value of Ic and awaits an input signal. When the voltage on the input starts to go positive, the device is forward biased even more than it was at idle. As forward bias increases, collector current increases. That's how the device works. Turn it on more, and more current flows through it. As collector current increases, collector voltage decreases. There's the key. Increasing base voltage causes increasing collector current and decreases collector voltage. Increasing base voltage causes decreasing collector voltage. And the opposite is true. That's it in a nutshell. Common emitter configurations phase shift signals by 180 degrees. And now you know how they do it.

It depends on the type of conductor, how many cores, type of insulation, how it is installed, etc. You will need to consider each of these factors, and check it out in the appropriate conductor data tables (e.g. in BS 761:2008).

Nothing. Resistivity is a physical characteristic of a material. It's not affected by its shape, etc.

There is no physical connection between the primary and secondary of a transformer. A transformer is essentially 2 laminated coils of wire interwoven with each other. The magnetic field created in the primary coil is induced into the secondary coil creating voltage on the secondary side.

Junction Box - an octagonal shaped electrical material where the connections or joints of wires are being done. It is also where the flush type lamp holder is attached. This could be made of metal or plastic (PVC) Polyvinylchloride.

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The function of a junction box is to suppress the spread of fire. In an electrical system the most likely spot for a fire to start is where wires are connected together. Loose connection of joined wires will create a resistance point. Over time with the current flowing through the connection it will heat and cool. This increases the resistance. Without repairs to this situation there will come a time when this heat will reach a combustible temperature. The junction box will suppress the spread of this fire by cutting off the oxygen supply to the fire. If the wire connection junction was in an open wall adjacent to combustible products, the fire could spread to wall studs and then combustion could overtake the whole house.

I believe there is no simple way to calculate this based just on the transformer structure; this is best calculated once the transformer is built, on the basis of actual measurements with currents. You would have to measure input and output

currents and voltages, calculate the input and output power, and divide output power by input power. This might give a number like, say, 0.98. Subtract this from 1 (1 - 0.98 in this example), and you have the transformer loss (in this example, 0.02, or 2%).

The total effective resistance of resistors in series is the sum of the individual resistances.

Three 60-ohm resistors in series have a total effective resistance of (60 + 60 + 60) = 180 ohms.

It is not clear what exactly is being asked-for in this question.

If it could be asked again, with a bit more detail as to what part of a household 110-120 Volt circuit is required, someone may be able to give a better answer than this one.

Increases the total resistance

Yes. But by constantly throwing the breaker handle back and forth will eventually loosen the mechanical parts inside the breaker to the point where the breaker will fail. There are breakers made for the purpose of switching, usually used in big warehouses to shut off banks of lights. The price of one breaker is probably equal to the price of about 10 standard light switches.

each phase is wired to its own breaker and all three breakers are tied together so they trip simultaneously (i.e., if one goes, they all go). If there is a neutral (as in a wye configuration), it connects to the neutral bar of the system, which may or may not also be bonded to ground (depending upon how the three-phase is derived and whether the panel is in the same building, among other things).

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The end the shaft comes out.

Only a DC motor uses direct current, and the reason is that it is the only supply available.

There are also plenty of AC motors used when there is an AC supply.

DC tends to be used for low-power devices like fans in electronic equipment.

Mercury vapour contained in an evacuated glass bulb.
Vapour warmed.
High voltage applied to electrodes inside lamp.
Vapour conducts and allows current flow, excitation causes vapour to glow brightly.
Little or no resistance, so requires a ballast in line.

What is a Panel Meter? A panel meter is an instrument that displays an input signal in either a digital or analog form. Many panel meters also include alarm options as well as the ability to connect and transfer data to a computer. OMEGA's iSeries panel meters are available with an ethernet option which allows the panel meter reading to be accessed across a local area network (LAN) or even through the internet.

directly quoted from here: http://www.omega.com/PanelMeters.html

It means that it is by itself - as opposed to being bundled with other applications for example.

A commutator less DC motor is nothing but a self controlled synchronous motor is being widely used in industries for high speed and large capacity.

P, the power in kW (kilowatts) is related to V (the supply voltage) and I (the current in amps) by the Power Law:

P = V x I

So, to get the current:

I = P / V

If you have something that uses 5 kW (which is the same as 5000 watts) and the source voltage is 120 V,

then the current drawn in amps = 5000 / 120 = 41.67 amps.

Applied with PM servo motor. Because of power generation effect when stops, it is easier to brake. (Rotator: PM Stator: Windings) The magnetic force is be made by permanent magnet and the current is used to generate torque. Then high torque and efficiency are available at low current and small size. It has no brush so there is little noise/vibration and no dirt. And high precision control is available with high resolution encoder. A Servo motor Based on the design of conventional AC Synchronous motor, with addition of an Amplifier and a feedback device.

If a capacitor will not charge, it is open, i.e. damaged.