Electronics Engineering

More current in the field coils means a stronger magnetic field for the armature to rotate in. This causes the output voltage for a generator to increase.

For a motor, more magnetic field means that the supply voltage can be matched at a slower armature rotation speed, so the motor runs more slowly but can supply more torque.

analog device characterized by theoretically infinite no. of posiible operating states .

That depends ... in a very interesting way ... on whether they are connected

in series or in parallel.

-- If the resistors are in series, then the total resistance increases when you

add another resistor, and it's always greater than the biggest single one.

-- If the resistors are in parallel, then the total resistance decreases when you

add another resistor, and it's always less than the smallest single one.

you just have to make a circuit and keep it open.. by not joining the switch wires now when the wires or any other conducting material will get dipped in water the alarm. light, or any other form of signal will be seen..as the circuit will be completed

In series, you just add the resistor values together to find the total resistance.

In parallel you can use the following equation you can find the total resistance by multiplying the lowest and highest resistor value, the dividing that by the sum of all the resistor values you have in parallel. you could also take the inverse of all the inverses of you resistor values added together.

Yes. It is based on Lenz law of Electromagnetic induction.

The cost of getting a microchip for your dog or cat is about $45. It's a one-time fee and there is a much higher chance of your dog getting found again. Your dog is family and you can't put a price on the safety of your dog.

A transformer,

: By appropriate selection of the numbers of turns, a transformer thus allows an alternating voltage to be stepped up - by making NS more than NP - or stepped down, by making it less.

Transformers are some of the most efficient electrical 'machines,with some large units able to transfer 99.75% of their input power to their output,Transformers come in a range of sizes from a thumbnail-sized coupling transformer hidden inside a stage microphone to huge units weighing hundreds of tons used to interconnect portions of national power grids. All operate with the same basic principles, although the range of designs is wide.

There is a chance that you can find an instruction video on Youtube. A good video would list the model number of the circuit board in the video title. Feel free to ask the video uploader any questions if you get stuck.

Without knowing the signals driving such a circuit and the tuning of the tank in the circuit it in not possible to give an exact answer. However assuming the tank is tuned to RF the behavior of the tank and LED should be effectively independent: the tank will respond to the RF in the signal and the LED will respond to the DC in the signal. The behavior would be different if the tank was tuned to low audio frequencies.

In electronics, a flip-flop is a device that switches automatically between two states, on and off.

There are various types, like re-settable and astable.

By using timing capacitors, the switch can be made to change state by the input of a signal and then it automatically switches back, after a pre-determined time.

(You 'flip' it and it 'flops' back, hence the name)

The uses are many and varied.

The most popular would be signal processing and de-bouncing of switch contacts.

A noisy switch may cause sensitive electronics to jitter between states. By wiring the switch through a flip-flop. the output will consist of one single, clean, pulse, regardless of how many times the input is triggered during a time period.

Flip-flop is needed in electronics for the design of counters and registers.

The value of the voltage (potential difference) across a conductor when a current of one ampere dissipates one watt of power in the conductor. It is also equal to one joule of energy per coulomb of charge, J/C. Unit conversion: V = W/A = (J/s)/A = J/As = J/C where V=volt, W=watt(power), A=ampere, s=second, C=coulomb(charge)

In school, we use programmable logic devices (ours is a FPGA). It is a small circuit board, with LED lights and hex-seven segment displays. We write code and draw schematics using Altera software that works with the board. To test the code or schematic, the module is compiled and the programmed to the board. If you call the right inputs and outputs, the board will perform whatever operation or task your code or diagram tells it to.

direct band gap means in e-k diagram valance bands are exactly below covalance band,in this band electron falls from the conduction band to valance band directly without going to metastable state and in indirect band gap the band electron falls from the conduction band to valance band by first going through the metastable state

475 amps, per NEC 310-16. Note that this is a maximum; there are many reasons to derate the current carrying capacity of the wire.

A pull-up resistor common 4K7 is normally used on ICs where a pin is floating to pull the pin to 5 volt or logic 1 it can be pulled to logic 0 internally by the IC it is normally used with MCUs (micro processors)

Generally SCR is used at high power applications, in order to withstand the temperature dissipated in the SCR, THERMAL STABILITY is very high enough. It means that thermal stability of silicon is very high compared to germanium that's why germanium is not preferred. But that does not mean it is not possible, in fact before silicon became common in the 1960s devices equivalent to the SCR were built using germanium!

The current flowing through a bulb is equal to the (voltage across the bulb) divided by the

(bulb resistance), and can be expressed in Amperes.

The rate at which the bulb dissipates energy is equal to (voltage across the bulb)

times (current through the bulb), and can be expressed in watts.

Most countries in the world use AC or Alternating Current, most circuits these days use DC or Direct Current. To control a modern circuit with mains power means putting a control circuit containing a rectifier between the power source and the whatis being controlled. The rectifier changes AC power into DC power.

heat sensor with fan cooling it will be used for cpu . it will be cool thing the mother board it will be reduce cpu temperature.........

Displacement factor is equal to the power factor for linear loads with sinusoidal voltages and currents.

pf = cos (angle1 - angle2)

THE ANSWER IS GOING TO BE EVASIVE. there are blades 50' long and there is blades 10' long. Unless you are specific nobody knows. And the actual cost is hidden usually from state to state because of taxes breaks.

If an electronic component gets hot, that means it is dissipating energy as heat. It is converting energy from one form to another. Resistors do this by design. Inductors and capacitors do this due to internal resistance, (and often overcurrent). Semiconductors (Transistors, ICs) also dissipate heat due to their internal resistances, and their switching mechanisms of changing state.

You can't run this light on a 120V circuit and get the same light output if it is designed to run on a 240V service. You need a voltage converter transformer. They are a common item sold for international travel. The difference in frequency shouldn't affect the light.