Electrical Engineering

bonding

You can make it so it does either increase or decrease. The limiting factor is that power out cannot exceed power in. So going to a higher voltage will limit current and going to a lower voltage will increase current available.

A2

Because AC is continuously changing in a sinusoidal waveform, it is hard to determine the exact voltage. It is usually called by it's RMS value (Root Mean Squared).

The result is that when you fully rectify an AC voltage, the DC voltage is actually HIGHER than the RMS AC voltage.

You need a strong magnet, a big coil of enameled copper wire, a large capacitor, and an efficient LED. And a few odds and ends. The basic design uses the magnet and coil as a generator, or dynamo. As you shake the assembly, the magnet slides up and down past the coil, generating voltage. You rectify the AC voltage and use it to charge the capacitor. You then discharge the cap through the LED to make light.

You use power factor when the load is not resistive, i.e. when it is reactive, and the phase angle between voltage and current is not zero.

The 'charges' (electrons, in the case of a metal conductor) are ALREADY distributed within the conductor. They are in a state of constant, haphazard, movement at just short of the speed of light. When a potential difference is applied across the conductor, there is a tendency for these electrons to move from the negative potential towards the positive potential. This tendency is VERY slow; for example, an individual electron is unlikely to pass through the filament of a flashlight during the lifetime of its battery!

A : A diode is an dumb animal he does not care how it is used all it cares is that its limitations are not exceeded

How do you proof of the existence of back emf ?

It is becase of not meeting each other

I think you mean spacing between line conductors, rather than phase conductors. If there is a greater spacing between line conductors in one circuit, compared with anothercircuit, then the two circuits are operating at different voltages.

In the context of science and engineering, 'power' (symbol: P ) is defined as the 'rate of doing work'. It's measured in joules per second which, in SI, is given the special name, the watt (symbol: W).

The open post voltage in electronics is the maximum voltage available from a solar cell. This will occur at zero current.

It is a transformer that is made for the converters. It is (usually) wired with a Wye AND and Delta output. This allows the transformer to output a total of 12, 30 degrees out-of-phase pulses. This gives rise to many advantages with filtering, efficiency, etc...

UJT is an abbreviation for (Unijunction Transistor) the electronic component that is at the heart of a simple timing circuit. A UJT timer is a circuit used in an electonic system to deliver a specific time. For instance, a 30 second UJT timer might be used to turn on a Green traffic signal for 30 seconds, then turn off. UJT is a specifically cheap way of doing this type of timed signal. Timers using UJTs have largely be superseded by timers based on a 555 integrated circuit.

Outlet rating should be suitable to the rating of the motor. The type should be preferably IP 55 or higher if mounted outside the sump in dry area.

You need to know the voltage and the power factor in order to answer the question.

The supply won't have to work as hard. It is perfectly acceptable, for example, to use a 1A, 12v supply to supply a 12v, .5A load. The current rating indicates the ability of the supply to dissipate heat caused by the current flowing. If the load current is above the power supply current rating, the power supply will overheat.

'Lap windings' apply to motors, not transformers.

A series motor is employed for traction application which has starting torque and permits intermittent operations by braking, which cannot be expected of a general purpose motor.

You will need a regulator circuit that will change the shape of the pulse AND regulate the voltage to 5v.

A generator converts mechanical power into electrical power. A motor converts electrical power into mechanical power.

It is a stronger isolator, meaning that it leaves less current through.

The last fixture in a parallel circuit is wired the same as the first. In North America, all of the fixtures are wired black wire to black wire and white wire to white wire. The black wire being the "hot" wire and the white wire being the neutral wire.

The sag setting is necessary because it is physically impossible to have a suspended line with no sag. The sag is specified because there has to be a minimum clearance value for the height above ground at the centre of the sag where the cable is at its minimum height.