Electrical Engineering

Use this formula W = A x V . Assuming that the saw is using 120 volts. 15 x 120 = 1800. Start up current on a motor will draw up to 300 % instantaneously so a 2000 watt generator might just do it. It would lug at the start but then catch up and run the saw. On motor from generator uses higher wattage is better.

just a digital voltage meter measure at the origin, and then at the end of line

In science and engineering, conductors are materials with low resistivity, this due to the presence of mobile charged particles within the material. In metallic conductors, such as copper or aluminum, the movable charged particles are present because atoms have loosely held valence electrons. See electrical conduction. All conductors contain electric charges which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In most materials, the rate of current is proportional to the voltage (Ohm's law,) provided the temperature remains constant and the material remains in the same shape and state. The ratio between the voltage and the current is called the resistance(measured in ohms) of the object between the points where the voltage was applied. The resistance across a standard mass (and shape) of a material at a given temperature is called the resistivity of the material. The inverse of resistance and resistivity is conductance and conductivity. Most familiar conductors are metallic. Copper is the most common material for electrical wiring, and gold for high-quality surface-to-surface contacts. However, there are also many non-metallic conductors, including graphite, solutions of salts, and all plasmas. See electrical conduction for more information on the physical mechanism for charge flow in materials. Non-conducting materials lack mobile charges, and so resist the flow of electric current, generating heat. In fact, all materials offer some resistance and warm up when a current flows. Thus, proper design of an electrical conductor takes into account the temperature that the conductor needs to be able to endure without damage, as well as the quantity of electrical current. The motion of charges also creates an electromagnetic field around the conductor that exerts a mechanical radial squeezing force on the conductor. A conductor of a given material and volume (length x cross-sectional area) has no real limit to the current it can carry without being destroyed as long as the heat generated by the resistive loss is removed and the conductor can withstand the radial forces. This effect is especially critical in printed circuits, where conductors are relatively small and close together, and inside an enclosure: the heat produced, if not properly removed, can cause fusing (melting) of the tracks. Since all conductors have some resistance, and all insulators will carry some current, there is no theoretical dividing line between conductors and insulators. However, there is a large gap between the conductance of materials that will carry a useful current at working voltages and those that will carry a negligible current for the purpose in hand, so the categories of insulator and conductor do have practical utility. Thermal and electrical conductivity often go together (for instance, most metals are both electrical and thermal conductors). However, some materials are practical electrical conductors without being a good thermal conductor In science and engineering, conductors are materials with low resistivity, this due to the presence of mobile charged particles within the material. In metallic conductors, such as copper or aluminum, the movable charged particles are present because atoms have loosely held valence electrons. See electrical conduction. All conductors contain electric charges which will move when an electric potential difference (measured in volts) is applied across separate points on the material. This flow of charge (measured in amperes) is what is meant by electric current. In most materials, the rate of current is proportional to the voltage (Ohm's law,) provided the temperature remains constant and the material remains in the same shape and state. The ratio between the voltage and the current is called the resistance (measured in ohms) of the object between the points where the voltage was applied. The resistance across a standard mass (and shape) of a material at a given temperature is called the resistivity of the material. The inverse of resistance and resistivity is conductance and conductivity. Most familiar conductors are metallic. Copper is the most common material for electrical wiring, and gold for high-quality surface-to-surface contacts. However, there are also many non-metallic conductors, including graphite, solutions of salts, and all plasmas. See electrical conduction for more information on the physical mechanism for charge flow in materials. Non-conducting materials lack mobile charges, and so resist the flow of electric current, generating heat. In fact, all materials offer some resistance and warm up when a current flows. Thus, proper design of an electrical conductor takes into account the temperature that the conductor needs to be able to endure without damage, as well as the quantity of electrical current. The motion of charges also creates an electromagnetic field around the conductor that exerts a mechanical radial squeezing force on the conductor. A conductor of a given material and volume (length x cross-sectional area) has no real limit to the current it can carry without being destroyed as long as the heat generated by the resistive loss is removed and the conductor can withstand the radial forces. This effect is especially critical in printed circuits, where conductors are relatively small and close together, and inside an enclosure: the heat produced, if not properly removed, can cause fusing (melting) of the tracks. Since all conductors have some resistance, and all insulators will carry some current, there is no theoretical dividing line between conductors and insulators. However, there is a large gap between the conductance of materials that will carry a useful current at working voltages and those that will carry a negligible current for the purpose in hand, so the categories of insulator and conductor do have practical utility. Thermal and electrical conductivity often go together (for instance, most metals are both electrical and thermal conductors). However, some materials are practical electrical conductors without being a good thermal conductor

If you're connecting it properly, then I would have to guess

that the multimeter is defective.

In SI, the coulomb is a special name given to an ampere second, in much the same way that a watt is a special name for a joule per second.

A substation is an indoor or outdoor location in which are located transformers, switchgear, busbar systems, and protection equipment. It's where transmission or distribution voltages are stepped up or stepped down, transmission/distribution lines are interconnected, and protected by circuit breakers that are operated by protective relays that monitor the status of the various lines. Generation doesn't take place in substations, but in power stations.

The motor has the ability to operate on two different voltages and still maintain the motor characteristics of the nameplate specifications. As the voltage goes down the amperage will go up in value but the HP and RPM will remain the same.

A conductor.

The starter motor of a diesel generator is a DC motor. Depending on the size of the diesel engine the starter motor could be 12 volts or 24 volts. Sometimes more that one battery is used at the specific voltage. These batteries are connected in parallel to create more amp hour cranking power.

R is inversely related to temperature T so as temperature increases resistance decreases.

Specifically, R increases if the T coefficient is pos.(P.T.C) And decreases if T coefficient is neg. (N.T.C) Most conductors have P.T.C and most insulators have (N.T.C) . xept. like carbon. 1 of few conductors that has a N.T.C. But all can be found on a tablet. R.T.C / R mil-foot ,R, millimeter-meter and R.T.C @ 68*F

By Kirchhoff's Voltage Law, the sum of the voltage drops around the series circuit will equal the voltage applied to the circuit.

For all intents and purposes, none. Transformers pass alternating current. Now, if you want to split hairs, when a direct current is initially connected to a transformer, magnetic field starts to build in the primary windings, and as this field builds, the lines of force cut through the secondary windings, MOMENTARILY producing an output voltage in the secondary windings. However, once the magnetic field is stable (within a millisecond or so) the output of the secondary windings fall back to zero. When you remove the direct current from the primary winding, the same thing happens again. As the magnetic field collapses, the magnetic lines of flux cut through the secondary, momentarily producing an output voltage. After the magnetic field collapes completely, the secondary output is zero. That is basically what you are doing with alternating current...inputting a positive voltage, then going to zero, then negative, then back to zero, building and collapsing magnetic fields so that it induces current to flow in the secondary windings.

a capacitor have a property it oppose any change of voltage

A single-core cable generally has a higher current rating because it can be separated from neighbouring cables to allow any heat generated to escape.

However if power cables continuously run warm it is a sign that they are being run uneconomically and the use of a thicker wire gauge is indicated, because the extra capital costs of a thicker cable would be more than offset by the saving on the cost of the energy wasted in heating the cable.

first calculate current from power and voltage.

then since wire comes in standard gauges with a maximum current rating for each just select the wire gauge from the table that can carry more current than the value calculated.

In parallel.

Miachael Faraday , who is the father of electricity found dynamo.

Dynamo is a device to produce electricity.

0.5amp

In general even though energy is lost during hysteresis it is not called as heat losses . Generally I2R losses are called as heat losses because in these tye of only in these energy is lost in the form of real heat

For a given load, the higher the supply voltage, the lower the resulting load current. So, using high-voltages in transmission systems (1) avoid enormous voltage drops along the line, (2) enable cables of realistic cross-sectional area and weight to be used, and (3) minimise line losses. So, high-voltage transmission requires less copper and avoid line losses -resulting in lower costs.

Yes, IF the motor is a dual-voltage motor to begin with. There should be re-connection instructions on the motor nameplate, or available from the manufacturer. The motor will list both voltages on the nameplate. If it only lists one, then the motor cannot be re-wired to a different voltage.

It's use while making love with your partner. During the pumping process a proper synchronisation has to maintained by both the bodies. Any imperfection can lead to the development of torrisioal stress on the shaft which can thereby result in premature ejaculation or even permanent damage/failure of shaft.
Remedy: DO ORAL