Electrical Engineering

A magnetic conductor is a material that supports free movement of magnetic charge (magnetic monopoles), similar to an electric conductor that allows free movement of electric charges. On average the net charge is neutral. Of course, magnetic monopoles do not exist, but clever engineering can produce close to the same effects. Importantly, magnetic conductors have hugely different boundary conditions from electric conductors in electromagnetics and physics. A major research breakthrough in demonstration of wideband magnetic conductors was published in 2011 in "Wideband Artificial Magnetic Conductors Loaded With Non-Foster Negative Inductors" by Gregoire, D.J. ; HRL Labs., LLC, Malibu, CA, USA ; White, C.R. ; Colburn, J.S..

six compound machines

It lets you know what material the cable is made from.

32v

In all power-generating schemes except solar, some other form of energy

is used to produce electrical energy by turning a mechanical generator.

The direction of an induced voltage is such that it always acts to oppose any change of current which causes it.So, for example, during the first quarter-cycle of a sine wave, when the current is increasing, the induced voltage acts oppose that change (increase) -in other words, it acts in the opposite direction to that current. During the second quarter-cycle of a sine wave, when the current is decreasing, the induced voltage again acts opposethat decrease that change (decrease) -in other words, it acts in the same direction to that current -trying to sustain that current.

This can be extremely dangerous if you do not know what you're doing. If you are even the slightest bit unsure call an electrician to do it.

To measure amperage you will first have to turn the circuits off that feed the motor. Next you will have to open one of the connections for one of the phases and wire your amp meter in series with the motor meaning you will have to make the current pass through your amp meter and go into the motor once it is running.

Make sure that your meter is sized and fused appropriately or you risk injury and damage to your meter, maybe even death.

no

The best answer is to look for Dr Nuzul. He is an expert about design temperatue.

380V ÷ √3 = 219.4

Grade 1 has a max load rating of 250 pounds.

Grade 2 has a max load rating of 225 pounds. Grade 3 has a max load rating of 200 pounds.

1200/sqrt(2) = 848.5 (rounded)

The reverse running of a three phase meter is possible when one of the meter's two potential coils fails. This is a problem found typically on a Delta service. A three phase meter in this condition is damaged and will report lower energy use than actual.

200 volts peak-to-peak is 100 volts peak, which is 70.7 volts rms (standing for root-mean-square) also called "effective". This 70.7 volts is the DC voltage with the same heating power as the peak-to-peak. The relationship is: rms (aka RMS) equals peak-to-peak divided by 2, then divided again by square-root of 2 (1.414). The division by 2 gets us from peak-to-peak to just peak. The next division takes us to rms. If you get an AC voltrage with no description, for exmple 120 volts AC, it is RMS (effective). The USA AC standard supply voltage is 120 (also called 117) volts RMS. The USA peak is 117 x 1.414 (square root of 2) = 165 volts peak, = 330 volts peak-to-peak.

KWH = KW times hours If you run a 750 KW load (lights, motors, so forth) for 1 hour, you have 750 KWH. If you run it for 1/2 hour, 750 KW X .5 hours = 375 KWH. If you run it for 5 hours, 750 KW X 5 = you do the math.

The 3PH motor has no internal contacts for a centrifugal switch and are therefore more durable when switched on and off frequently,

The 'rate of change' applies to the flux itself, and has nothing to do with it linking the primary and secondary windings. There is only one flux, so of course the rate of change is 'the same'.

A connection can be taken between phase lines, or between one phase and neutral. Both methods give a single-phase supply. Between phases the voltage is sqrt(3) times more than between one phase and neutral.

In each case the load gives an unbalanced current on the 3-phase system but the idea is to average out the unbalances over a group of single-phase loads.

i'm not really sure, but if i'm not mistaken, you should know the frequency of the PWM and it's duty cycle. For an example, if f = 10khz & duty cycle = 90%. f=1/t, so t=100microsecond, 90/100 x 100microsecond = 90microsecond. So the width of PWM is 90microsecond

The size of the contactors are dependant upon what the voltage the motor is operating on.

lenzs law

The HP of a motor is determined by the manufacturer of the motor. The after market user or engineer then determines what size of HP is needed to operate their type of designed equipment. When the customer buys the equipment needed for their type of manufacturing an electrician is hired to connect the equipment to the electrical system. The electrician then determine the overload protection, wire size and voltage drop on long conductor runs.

Because a 5hp motor does not have enough power to turn a 10hp load.

To answer this question the voltage and the amperage of the cap must be stated. Then the termination letters can be given.