Electronics Engineering

Low efficiency

1. NAND gate is used to invert the input A (by connecting A to both inputs).

2. NAND gate used to invert B the same way

3. Now put A' and B' into into a third NAND gate. The output will be (A'B')' which is equivalent to A+B.

Circuit Breakers and Fuses limit the amount of current flowing through the circuit.

Increase, decrease, or remove the load

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Change the voltage and the current will also change in direct proportion, Ohms law.

This seems like a question from an electrical course, and is probably best answered by your course materials. It's your test question, not ours, and there won't always be someone to ask the answer of. Earn your diploma.

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Transistors are the fundamental building blocks of a computer, just as cells are the buildin blocks of any living organism. It is rare to find any individual transistors in a modern computer but every integrated circuit contains vast number of them. For example, every memory location will have a pair of trasistors, so there are 16 of them for each byte, so 16 million of them for each megabyte of memory. The central processor which carries out all the calculations and other processes also contains millions of transistors. As integrated circuits are developed, the size of each transistor gets smaller, so more can be packed into single chips but they are still doing the same job as the individual transistors that were used to build the very first solid state computers. To learn more about the way transistors operate in a computer, it is worth looking the way they are used to make simple logic gates. The basic gates such as OR, NOR, AND, NAND and various latches are used to create the powerful computers we take for granted today. A study of these gates will offer some insight into the way computers store, move and manipulate data using transistor technology.

• Can??? Sure, you'd just need to come up with a waterproof enclosure.

  But the problem is, many fluorescent fixtures don't work well when the temperature drops. Yes you can use fluorescent fixtures outside, they should be approved for the purpose and make sure they have 0 degree rated ballast for cold weather starting. The new electronic type ballast work in cold weather with no problems.

a dc ammeter is a ammeter which has three pins and it works by two wires.

Transistor is a three terminal device. Its shape may differ with applications.

Engineers often use 'models' to represent the behaviour of complicated devices such as machines. In the case of transformers, these 'models' are more-usually called 'equivalent circuits' -schematic diagrams, using simple resistors and inductors, to simulate the operation of the transformer, and to help us construct the transformer's phasor diagrams.

The simplest equivalent circuit, which can be considered a 'first approximation' of the transformer's behavioiur, is commonly called an 'ideal transformer', and only accounts for the transformer's ability to step up or step down the primary voltage and secondary current.

The 'second approximation' equivalent circuit, takes into account the core losses and magnetising current.

The 'third approximation' equivalent circuit takes into account the resistance and leakage reactance of the primary and secondary circuits, responsible for the regulation of the transformer, and it takes into account both the core losses and the copper losses. The 'third approximation' equivalent circuit, therefore, can be considered the most accurate equivalent circuit.

When you convert digital signal to analog, it is called as an analog signal.

The device used is called digital to analog converter.

depend on the R value(s) because V Source = Sum of individual voltage across each R in the series so if R in the series are equal value, then their V are the same and their V total will be equal of the V Source

it is used in voice transmission,to active vibration control and is used in channel vocoder

It already is in theory.

If you consider what you're asking, if it is an image and not a Photograph then what it ultimately is, is a set of 1s and 0s defining bits and bytes and on and off. Therefore meaning the moment it touches the computer it is an electrical signal.

are called dopants

Once an SCR has been turned on by means of a gate pulse, it latches, or remains on. The only way to turn the SCR off is to either remove the anode to cathode voltage, remove the load current (SCR's have a minimum current below which they will not fire), or reverse bias the SCR. If the SCR is used in an AC circuit, turn off is easy. This is because the voltage falls to zero, then reverse biases the SCR every cycle. This naturally turns off the SCR. In fact, you have to re-trigger the gate every cycle to turn it back on. In a DC circuit, the SCR must be reset by some means as mentioned above. Once the SCR fires, there is nothing you can do to the gate to control the device. The gate only turns it on, not off. There is a similar device, called a GTO, or gate-turn-off device, that can be turned off via the gate. Once an SCR is on it will not turn -off unless the minimum holding current is met. that can be accomplished by reversing anode polarity or by decreasing loading to below holding current

It is called an open, incomplete, or broken circuit. Circuits might be opened intentionally (using a switch), or unintentionally (breaks in, or disconnected wiring).

s for static

Sure, check the solar power sites for info. You can run most ac appliances by solar, wind, hydro etc. via an inverter if you have a system sufficient to keep up with the load requirements.

Because higher voltage can carry further.

That answer is too simplistic. The actual reason is as follows: for any given load, the higher the supply voltage, the lower the resulting current. Lower currents mean smaller diameter transmission/distribution conductors can be used and the line losses(I2R) are lower.

It is used for various instruction set and interrupt systems also.

They were a popular, early, microprocessor commonly embedded in washing machines and domestic appliances, to replace mechanical timers and interlocks.

sir,please tell us about microcontroller 8951 program for robotic car