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Electronics Engineering

Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.

24,372 Questions

Why is Boolean algebra used for combinational logic circuits?

Because it is a very efficient language for describing their operation as well as a tool to assist in design optimization (reducing the cost of the circuit when built).

How digital signals get degraded or corrupted?

Digital signals get corrupted by the noise, or overloa of information Overload of information, static in the air, etc

What is microbial diversity?

Microbial diversity includes a large collection of organisms. It indicates a variety of studies that are important for several national purposes. It includes a range of variability in all kinds of microorganisms like fungi, bacteria, and viruses in the natural world. It is a natural resources that is unseen.

Why if the same current flows in a wire coil and a single wire loop the magnetic field inside the coil is stronger than the field inside the loop?

why, if the same current flows in a wire coil and a single loop, the magnetic field inside the coil stronger than the field inside the loop

What is XT oscillator?

It's a VERY vague distinction - but HS (High Speed) gives more drive to the crystal.

There's no specific changeover point - but 4MHz would be XT, and 20MHz would be HS. Often either will work, but perhaps a reasonable changeover would be 10MHz?, or even 4MHz and below is XT, and anything higher is HS?.

hope this will help

What channels does an amplifier usually have?

An amplifier usually has 4 channels. A, B, C, and D. A and B are used for effects in clean. C and D are used for sounds and effect changes in dirty.

Universal properties of NAND and NOR gate with logic diagram?

NAND gate is nothing but a AND gate with a NEGATION at its output.

Its truth table is

INPUT1 INPUT2 OUTPUT

0 0 1

0 1 1

1 0 1

1 1 0

How do you read the code of an integrated circuit?

Code on an integrated circuit includes four common sections: the manufacturer's name or logo, the part number, a part production batch number, and a four-digit code that identifies when the chip was manufactured. The manufacturing date is commonly represented as a two-digit year followed by a two-digit week code.

How bar code reader update the database automatically?

A: A bar code are nothing but a series of numbers when it reads those numbers depending on the software and intention it can do all sorts of things.

Barcodes are different width lines that are coded into either numbers or characters. In a database you associate a specific encoded value to an item so that when it is scanned by Point of Sale (POS) scanners, the associated software can automatically change the quantity in the database and do various things like bill a credit card, automatically reorder the item and so forth.

There are different barcode standards and usually the database will also include the standard so that the reader and POS software can work properly.

Why does not it matter where you measure the current in a simple circuit?

The current measured at any point in a simple circuit will be the same because current is the measure of electron flow through a circuit. The current flowing through any branch of any circuit (or an entire simple circuit) will always be the same at any point.

Why input voltage is 1-5 volt?

Input voltage is zero-offsetted, such as 1-5 volts, 4-20 millamps, etc. in order to detect the condition of transmitter or connection failure. Otherwise, you might not be able to differentiate between instrument zero and instrument failure.

Why autopilot can be engaged at 400 feet?

There are, as governed by FAA rules, certain minimum altitudes where such deviced can be operated. basic idea is traffic control, in end terminal areas, the device would be impractical, as a hypothetical automobile auto-steering device would be wildly impractical in parking lots, which are somewhat chaotic free-fire zones. The same logic applies. an autopilot could not be practically adapted to heliciopters given constant changes in control use and flight path- in that sense akin to a Crane.

How many different sets of input conditions will produce a high out-put from a five-input OR gate?

Since the total number of possible input combinations is 25, which is 32, and since a low on all five inputs is the only condition resulting in a low at the output, the answer is 31.

How can i calculate amperes for transformers?

Find the wire from the secondary of the transformer. If it's a step-down transformer the thicker wire is the secondary.

Measure its diameter in inches and calculate its cross-section area in square inches. The current rating for transformer wire is 1000 amps per square inch, or 1.55 amps per square mm.

What is peak lopping?

In general Electricity supply companies charge consumers for the amount of power that they consume in addition to the amount of energy they consume.

By power it is meant the rate at which they consume the energy.

If for example you have two consumers who both use the same amount of electricity in a month but one uses it over two days and one over the whole month, the one that uses it over the two days will be penalised in their billing because the supply company will need to install more expensive, higher capacity equipment to supply them.

The financial benefit of peak lopping is reflected in the billing by the supply company. there is a charge per unit energy in cents/kWh and a demand charge which is based on the maximum demand that is recorded for the billing period, this is in $/kVA (power) the much more expensive one is the demand charge so it is better to draw energy for longer periods of time at cents/kWh than to draw it quickly and pay a premium rate for the demand in $/kVA.

Peak-lopping refers to a situation whereby the consumer choses to cut the peak demand that they require in order to avoid paying the penalties associated.

There are various means of implementing peak-lopping measures. in some buildings the Building Management System will simply switch off items such as Geysers and certain Air Conditioning units when the building starts drawing too much power.

Other means of peak-lopping generally involve storing the energy in some way during times of low demand for use later when it is needed during times of higher demand. An example of such a solution would be to use electricity during the night to make ice in an insulated ice storage tank and use the ice during the day to cool the Air conditioning units. This would reduce the amount of power they require during the day when there is a high demand for electricity.

Test a circuit board?

It depends on what type of circuit board, the symptoms and the application of the board.

Otherwise, most technicians will use a good test meter and/or an oscilloscope, or a plug-in diagnostic system (computerized or stand alone).