Electrical Engineering

The start button on a start/stop is normally in what position?

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Whoa.... Please rethink your question and ask it differently because:

North America uses 60 Hz at 120 or 240 Volts power. Normally 120 volts in hotel rooms and home living areas; normally 240 volts for an electric kitchen stove.

Europe, Asia & Australia use 50 Hz at 240 Volts power. Everywhere.

Both 50 Hertz (Hz) and 60 Hz refer to the number of cycles for Alternating Current (AC) as opposed to zero cycles in Direct Current (DC). Flashlights and automobiles work off their DC battery.

There is a historical reason why North America and Europe use different cycle (hertz) systems but for the traveller this is what you should know:

1) A 120 volt electronic device will blow up or smoke or melt if plugged into a 240 volt system.

2) A 240 volt electronic device will either run slow or not at all if plugged into a 120 volt system.

3) Most countries have their own style electronic plug to match a wall socket (mains) so the chances of YOUR device matching the visited country's wall socket is not promised.

4) Many devices such as modern laptop computers have dual-voltage/dual cycle power adapters that allow them to be used world-wide. Some devices such as modern hair dryers have a switch in the handle allowing the user to choose between 120V or 240V.

5) 120V is sometimes called 110V and 240V is sometimes called 220V - as a traveller you really don't care about terminology and it makes no difference to you or your electronic device(s).

Basically, your series and shunt ohmmeters differ in circuit configuration. Your series ohmmeter is configured in a way that your "meter" (which has internal resistance) is connected in series to your "measured resistor" and we all know that those TWO resistances will ADD up causing some sort of inaccuracy. While on the other hand, your shunt ohmmeter is configured in a way wherein your "meter" is connected in PARALLEL to your "measured resistor" that will ease-up the inaccuracy but will only measure resistances ranging from 200 Ohms to 400 Ohms (typically and depending on your configuration).

Resistance is like frictional force. It opposes flow of electricity. So this will consume some electricity in the form of heat. Measured (in Ohm) Inductance (in Henry) nd capacitance (in farad) stores energy in their electromagnetic nd electrostatic fields respectively. They don't consume any power. But in real scenarios due to the element's internal resistances used in design they usually have a drop. But these two have important spot in engineering. Both of them effects the powerfactor in the circuits.

P = IV V = P/I V = 5.00 W / 5.0 A V = 1.0 V Therefore 1.0 V is consumed by the resister

The voltage drop is equal to the total resistance across which it is dropped multiplied by the current flowing through this resistance.

i.e. V=IR (where V is the voltage drop, I is the current and R is the resistance)

Thus, I=V/R

So I=5/1000 A = 5*10-3 A = 5 mA

So the current flowing through your circuit is 5mA. Note that this answer is theoretical, and that it may differ from what you observe in practice due to component tolerances (resistors with the gold band at the end are only accurate to within 10%).

A rip current is when a tide cannot escape directly, maybe because it is trapped in front of a reef, sandbank or something. When the water finds an exit point, it all rushes out at top speed, therefore sending whatever is in the water at the time out to see.

Meanwhile, a longshore current is when something ( the wind ) is angling the water's course as it heads towards the shore, therefore creating a current running parallel to the beach. Longshore.

Ohm's law relates voltage, current, and resistance.

Voltage is current times resistance

Current is voltage divided by resistance

Resistance is voltage divided by current

A galvanic isolator is a device which blocks low voltage DC currents coming on board a boat. The reason why these currents are blocked, they cause corrosion to metal underwater.

Generally Slip Rings are MERCURY WETTED.The standard slip ring circuit consists of a pair of sintered metal copper/graphite brushes making contact with a brass ring.

Motors are rated either in Watts or Amps, and by Voltage. If the motor is rated in Amps, that is the fuse or circuit breaker size you will need. If rated in Watts, you will have to use the formula P=IE, where P is power in Watts, I is current in Amps, and E is Electromotive Force in Volts. Since we know the watts and volts, we solve for current, thus: I=P/E, and I will be your current rating.

One note: These calculations give the MINIMUM rating needed for the motor to run. Fuses and circuit breakers are usually designed so that they will break if the circuit pulls 250% of the Motor's rating.

New Zealand. New Zealand is the only nation almost entirely within the Roaring 40's - the 40+ degree southern latitudes, considered to be the windiest inhabited region on earth next to the furious 50's (that only encompass southern Chile and Argentina). Unlike the northern hemisphere, there are no large landmasses in these latitudes, allowing the winds to move unimpeded.

area of the conductor, length of the conductor and temperature around the conductor..........

The simplest way to understand it is to use Ohm's law: E = IR. Voltage (E) can be though of as pressure that drives the current. Voltage is measured in volts. Current (I) can be thought of as the actual flow of electrons within the circuit. Current is measured in amperes, or amps. Resistance (R) can be thought of as exactly that - the amount of opposition to current flow in a circuit or component. Resistance is measured in ohms. So let's see how this works. E = IR. If E is constant (typical for a battery) then the current (I) is equal to the voltage divided by the resistance. Let's use a voltage of 12 volts, and a resistance of 2 ohms. The current is I = 12 volts/2 ohms= 6 amps. If you remember Ohms law, you can predict what will happen in simple circuits using only a little bit of simple algebra. What is arguably the simplest form of this relationship is that a 1 volt source connected to a 1 ohm resistor will cause 1 amp of current to flow. There are other ways to say the same thing. A 1 ohm resistor with 1 amp of current flowing through it must be connected to a 1 volt source. A 1 volt source that causes 1 amp of current flow must be connected to a 1 ohm resistance.

All Moving Iron Type measuring instruments major rms value of quantities.

Couple of things wrong here. 30 isn't a wire size. If you mean a wire that can carry 30 amps that would be # 10. Now it depends on how many # 10 wires you want to put into a conduit that governs the size of the conduit.

The earth wire connects the metal frame of the electrical appliances to the ground. The convention is to have green colour for earth wires. The purpose of earthing is that in case of an insulation failure in some appliance, this wire connected to the metal body will provide a path for the current to flow on the ground. In absence of earth wire, this fault current would have flown through the body of the operator, causing electrical shock.

For a three-phase, four-wire, system, single-phase loads can be connected between any pair of line conductors. For a three-phase, four-wire, system, single-phase loads can be connected between any pair of line conductors, or between any line conductor and the neutral conductor. The choice depends on the voltage requirements of the load.

the longest circuit

Get enough new wire for the length needed and the link chain to make the swag. Attach the new wire color to color and cover tightly with electrical tape. (Better to solder first if you can) Try to tuck the taped connections close to the fixture to hide. Then thread the new wire thru the chain and purchase a separate plug. The plug will have a place to attach the wires to screws and a cover that snaps over the wire. You're ready to plug in.