Electronics Engineering

The AC supply is sinusoidal by the electricity being produced in a rotating machine - the alternator - that spins coils of wired across a magnetic field. The voltage is proportional to the rate at which the coil is cutting across the field so maximum at the infinitesimally small point at which it is moving perpendicular to the field; minimum when moving for an equally tiny moment along the field lines. Since the coil is rotating, the voltage at any one point is therefore proportional to the instantaneous angle of the coil with the field. So we now have an angular relationship that is changing continuously through the full 360 º of each rotation, hence the voltage follows the sine of the angle, by basic trigonometry. Each complete turn (360º) therefore gives 1 complete cycle with the 0V crossings where the wire is effectively moving along the magnetic field lines for an extremely brief moment.

Ohm's Law is stated as V=I*R, where V = voltage, I = current, R = resistance.

For make a system balanced

losses in power

1/6th of a cycle is 60 degrees or (pi/3) radians.

the ocean is very big, and radar was only an experimental technology, and the attach was very unexpected no one knew it will come so fast and that it will damage so many navy ships.

Only from a point charge, or from one with spherical symmetry.

ITS AN NPN TRANSISTOR , GENERALLY USE AS A SWITCH GENREALLY IN COMMON EMITTER CONFIGURATON

Loading of Rc coupled amplifier occurs, if you doesnt use coupling capacitors......

If avoiding input coupling capacitor the amplifier will load the function generator..

For more details go to

http://mycircuits9.blogspot.com

yes

You see how long it takes for each signal and find the average. Example: 1st: 1second 2nd: 3seconds 3rd: 2seconds. So add all and divide by how many terms (3). 1+3+2=6 6/3= 2. The frequency is 2units. I hope this is right.........

Transformer turns ratio is the ratio of voltages between two windings. For instance, a 24VAC control transformer that runs on 120VAC will have a turns ratio about 5 to 1.

a way of diode modelling in which diode just work as an energy source in the circuit

It stands for CeNtRa Science Corp. A Taiwan based company established in 1992, with three factories located in Taiwan and mainland China. They have become the largest MOV manufacturer in both Taiwan and China.

CeNtRa Science Corp. is a leading manufacturer and exporter of power protection equipments, specializing in manufacturing metal oxide varistors.

If you will connect it right, it will work.

A closed circuit works by having electricity flow in a complete circuit or circle or any closed shape.

Indtherm is one of the leading manufacturers of Induction Furnace, based in Kolkata (India).

Auto switching usually refers to the input voltage being automatically selected, therefore one on a laptop probably means you can use multiple charger units with it or it selects its own mains charger voltage.

The circuit designer typically picks a family of devices to implement the functionality of the circuit. The devices will fall into a range of voltages. Many integrated circuits operate at 5VDC, so it is an obvious choice for many applications.

The PNP transistors conducts when there is no signal at base (0V or grounded), when base current is increased the conduction of PNP transistor decreases.

If the Peak to neutral voltage is 220 volts, the root mean square voltage is 155.6 volts (sqrt(220)).

this is called a universal motor

most non wireless hand tools have universal motors

these are series dc motors with laminated poles

they can tolerate ac but run better on dc

The Q factor is describing how sharp the dropoff of the filter is relative to the pass band. Wikipedia has a decent writeup on Q factor. The more components you use to make the filter, and the lower the cutoff frequency, the higher the Q will be.

Both common 'TV Coax' and 'Type F' cable connectors are commonly used to support both digital and analog video signals.

Plain TV coax connectors (male and female) can easily be taken apart by anyone without having to use any tools, so they are commonly used for making simple cable connections for tv antennas and digital tv set-top boxes.

Type F (male and female) connectors use screw threads so that, by using simple tools such as wrenches and/or hand pliers, they can be tightened-up too hard to be loosened and disconnected by hand.

That is why Type F connectors are regularly used for making signal connections for cable and satellite tv systems and for computer broadband cable systems.

There is not enough information. It depends on the type of battery: chemistry, cells, size.

False.

1. Electricity involves the movement of electrical charges. The most common case is the movement of electrons (a negative charge), but other possibilities exist, such as movement of charges through ions (positive or negative), or holes (positive).

2. Even stating that electricity IS a flow of charged particles is a gross and misleading simplification. An electrical current INVOLVES the flow of charges, but that does not fully describe an electrical current.