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I Want To Know About Electronics….? How can i prepare to know about basic of electronics
What is the purpose of the Basic Electronics Test?
To measure your knowledge and ability to apply concepts, terms, and principles involved
in working on or near electrical and electronic equipment. Although the test contains
some factual questions, it emphasizes your understanding of the subject and your ability
to apply what you know, not just your memory for facts or formulas.
Who has to take it?
Candidates for certain BellSouth technical jobs are required to qualify on this test.
Although there are no prerequisites for taking the Basic Electronics Test, if you have no
prior training or work experience in basic electricity and electronics, you probably will
not do well on the test.
What kind of test is it?
It is a 60-question multiple choice test. Each question has 4 possible answers to choose
from (a, b, c, d). Some questions refer to figures containing circuit diagrams or other
schematics. These will be provided to you in a printed Reference Booklet.
How do I take the test?
In most locations, the test is given on a PC. Questions appear on the screen like this:
Q: What is a "short"?
a. an inductor that uses no power
b. an interrupted circuit
c. an undesired conductive path in a circuit
d. a bare conductor
Just touch the screen to indicate the answer you think is correct, answer "c" in the sample
question above. When you're ready for the next question, you press "Next Question" at
the bottom of the screen. You can change your answers as many times as you wish, go
back to an earlier question, or review the entire test. You will have 60 minutes to finish.
Basic Electronics 4 Nov ’98
Will I have to do any calculations?
Yes, but you can use a calculator. You will be required to bring a calculator that is silent,
handheld, and battery operated. It cannot be solar or have alpha characters on the keypad.
The calculator you bring should be able to perform the following functions: Addition,
Subtraction, Multiplication, Division, Cosine, Power functions, Logarithmic functions,
and Square Roots. A scientific calculator can perform these functions.
Do I have to remember formulas?
You will use formulas on the test, but you don't need to have them memorized. The
Reference Booklet which contains the figures also lists all the formulas you might need.
You can refer to it any time your memory needs jogging.
How is my score determined?
Your score will be the number of questions you answer correctly. There's no penalty for
guessing, so try to answer every question.
What happens if I don't pass?
If you take the test but do not score high enough to qualify, you will have to wait for a
specified period, determined by BellSouth, before taking the test again.
What does the Basic Electronics Test cover?
It covers four main subject areas:
o DC Circuit Analysis
o AC Circuit Analysis
o Transmission Lines
o Fundamentals of Electronics
In addition, you need to know:
o Applied Math
o How to Use a Scientific Calculator
Basic Electronics 5 Nov ’98
What exactly do I have to know?
Here is a list of the specific knowledge and skills the test covers. If you know and understand
these things and can apply what you know, you should do well on the test.
DC Circuit Analysis: Knowledge and Skill Requirements
o Use Ohm's law to solve for E, I or R
o Understand the relationship of conductor size and length to resistance
o Use the power formula to solve for P, E or I
o Understand the relationships of efficiency, power input and power output in a circuit
o Calculate the total resistance of a series resistance circuit
o Calculate the total resistance of a parallel resistance circuit
o Simplify series-parallel resistance networks in order to determine the E, I, R or P
across any network component using Kirchhoff's Law
AC Circuit Analysis: Knowledge and Skill Requirements
o Understand the concept of a sine wave including phase, frequency, period and
o Understand the relationships among rms, peak, and peak-to-peak voltage in
alternating current circuits and be able to solve for any of these using a formula
o Understand the concepts of capacitance and inductance
o Understand the relationship of capacitive and inductive reactance with frequency
o Recognize the symbols for reactance--capacitive and inductive
o Understand the E and I phase relationships in reactive (inductive or capacitive)
o Understand the concepts of true power, apparent power, and power factor (PF) in a
reactive circuit and be able to solve for any of these using a formula
Transmission Lines: Knowledge and Skill Requirements
o Understand the concept of impedance matching and the effects of mismatch on the
transfer of energy
o Understand how the primary constants (resistance, capacitance and inductance) of a
transmission line affect the attenuation of a signal
o Understand the decibel concept and how it applies to signal transmission
o Convert from a power or voltag
Safety Measures When Working With Electronics? I’ve recently gotten interested in electronics but I have no one nearby thats experienced with it to help me. I was just wondering what safety measures should I pay attention to?
I’ve been doing electronics for around 40 years, and there are three main types of hazard to be wary of.
1. Electrocution. Caused by the flow of electrical current supplied at a high voltage though your body. Although a HIGH VOLTAGE is needed to get electrocuted, it is the CURRENT flow that actually kills you.
Risk can obviously be minimised by only working on stuff that runs off 12 volts or less! I say “minimised”, because there are some circuits that will create a high voltage hazard despite only being fed from a low voltage supply. E.G. Portable T.V’s, Portable fluorescent lighting, etc.
Practical safety measures I take when working on high voltage equipment are: Keep one hand in your pocket when poking around near the high voltage sections, the most dangerous electric shock is when the electricity flows in one hand and out the other, because it will travel across your heart. If you must touch something that might shock you, use the back of your hand/fingers, because then if you get shocked, your hand will almost certainly jerk away from the source of electricity. Best of all get one of those screwdrivers which have a neon in the handle, they will indicate dangerous voltage at no risk to the user. Try not to work on your own. I have been known when working on equipment that I consider unusually dangerous, to make sure I have an observer in the room who is carefully briefed on what steps to take if things should go badly wrong…
2. Fire. Many electrical devices dissipate heat in use, sometimes a fault condition can give rise to excessive heat, which can cause fire. The risk of fire is usually greater in circuits that have mains power supplies or batteries that can source high currents. The soldering iron, is a constant source of danger, particularly to married men who choose to work on the kitchen table or living room carpet. Women can spot a soldering iron burn with uncanny speed, and I have yet to find a convincing excuse…
Precautions against fire that work for me are: Whenever possible, turn the electricity off before picking up the screwdriver! Ensure that if you have to leave the current on, EG for diagnosing a problem, you can turn the supply off even if the item being worked on catches fire…
And I have just been learning about Lithium batteries, it seems that these present a higher fire risk than I am used to encountering, and consequently require greater precautions in their use.
3. Poisoning / increased risk of cancer! Electronics components often use toxic metals in their construction. And some of the old stuff uses really nasty materials, E.G. Beryllium heatsinks in RF power amplifiers. You can reduce your risk by not sawing or dremeling sub assemblies apart. When you make a mistake and let the magic smoke out, open the windows and avoid breathing it in. (It’s called “magic smoke”, because after it escapes your circuit usually will not work any more!) Don’t hold small components or solder in your mouth whilst assembling. Wash your hands after doing electronics work, and before eating, smoking, or nail-biting.
The bottom line is:
The most effective safety measure you can take is to KNOW WHAT YOU ARE DOING. Until you do, may I suggest you stick to circuitry that is NOT powered from the mains supply, or from batteries larger than those found in household electronic items..
IN conclusion, although reading the above, makes electronics sound quite scary, in my 40+ years of tinkering, I have only ever received one nasty electric shock, (the sort that made me want to have a little lie-down afterward) and a handful of lesser shocks. I can’t remember any actual fires, although I’ve inadvertantly burned lots of things with the soldering iron, and I have lost count of the times I have let the magic smoke out…
Hope this helps. Cheers, Steve C.
What Is Electronics? How do electronics used in space science?
The field of electronics comprises the study and use of systems that operate by controlling the flow of electrons (or other charge carriers) in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is an integral technique in the field of electronics engineering and is equally important in hardware design for computer engineering. All applications of electronics involve the transmission of either information or power. Most deal only with information
Electronic systems are used to perform a wide variety of tasks.
The main uses of electronic circuits are:
1. the controlling and processing of data
2. the conversion to/from and distribution of electric power
One way of looking at an electronic system is to divide it into 3 parts:
Inputs - Electronic or mechanical sensors (or transducers). These devices take signals/information from external sources in the physical world (such as antennas or technology networks) and convert those signals/information into current/voltage or digital (high/low) signals within the system.
Signal processors - These circuits serve to manipulate, interpret and transform inputted signals in order to make them useful for a desired application. Recently, complex signal processing has been accomplished with the use of Digital Signal Processors.
Outputs - Actuators or other devices (such as transducers) that transform current/voltage signals back into useful physical form (e.g., by accomplishing a physical task such as rotating an electric motor)
They are very important in space science because involve in data processing,telecomunication system,control,sensors and live support system specialy for spacecraft/station.
Business Name Ideas For Electronics Store.? I’m thinking about starting a small business selling electronics. Plasma TV’s, computers, digital cameras. etc. Any ideas on what I should call it. I’m having a hard time coming up with a business name.
Bryan, marketing and purchase power is a distinct need for you to understand and one little store is not only a dreamers reality check but putting the information that will best suit your need to be successful is weighed by the clientele you are going to need to frequent your store and buy from you. Best Buy is your competition not to mention the huge outlet stores selling on a 0 commission basis and shipping anywhere in the world from an on line source. Since you felt it un necessary to tell us where you live, where you want to locate the store, if there is a college campus near by, and most all other information that could be used to better give the name of your store at least a fighting chance, I suggest you read a few books about owning a business, marketing and maybe even try working for an electronics store you know to really see if this type of carreer is going to make you happy in the long run. If not here are a few names that came to mind while I was so delicately putting this:
Four Eyes Electronics and Cameras
Lost in Space the Future of Electronics
Futuristic Electronics and Camera’s
The Mind’s Eye Cameras and Electronics
(if there is a college campus near by, use the colleges mascot as the name adding electronics and camera)
like: Buckeye Camera and Electronics or Badger Electronics and Cameras
Electronics? I am currently studying Electronics and Computer technology at DeVry University, I was wondering if this career is a good one and of it pays well.
As someone who is also studying the same thing, I can tell you that the pay is very good. If you can get in with the government the starting pay for a technician with a Bachelor’s Degree can range from $40,000.00 a year up to $85,000.00+ a year depending on experience. At a local community college here in the Hampton Roads area they are looking for Computer/ Electronics Technicians with a Bachelor’s Degree. They are willing to starting the person at around $80,000.00 a year. If you known how to solder, troubleshoot down to the component level, understand how the operating system works, and learn how to set up a network properly employers will be coming to you. Do yourself a huge favor and get your degree. It will pay off in the long run.
Government; however, generally won’t hire anyone with less than a GPA of 3.0. They prefer graduates to have at least a GPA of 3.5.
Learning About Electronics? Hello,
I am interested in joining my school’s robotics team and I want to know more about electronics.
The team doesn’t really teach to well and my school doesn’t offer an electronics course for sophmores.
Do you know of good online courses and lessons you could recommend? What about books?
Doesn’t have to be free but it would be nice.
I’m looking to learn stuff on motors, circuits, etc. mostly things that would make something move I guess.
Electronics Tutorials Blog
China Online Electronics? China is among the world’s bigest producers in electronics.It is ideal to consider China online electronics to start business.I want to find a reliable wholesaler with cheap China online electronics.Do you have some to recommend?Any reply is appreciated.Thank you!
Purchasing these electronics online lets you select products from numerous brands. So that it is not a surprise why purchasing electronics online has attained massive popularity. Buying China online electronics is certainly the most ideal option.You can come to http://goo.gl/4Xhdc which provides various electronics with wholesale prices and high quality!
What Do Electronics Engineers Do? At first I wanted to be an Electrical Engineer, but later I found out that I like working with resistors capacitors IC’s and all those other electronic things, so I want to be an Electronics Engineer.
So my question is, do Electronics Engineers do those kinds of things?
What do Electrical Engineers do?
Electronics engineers still work with resistors, capacitors and IC’s. They typically integrate components that are designed by electrical engineers to make electronics. For instance, an electrical engineer may design a component that can detect carbon monoxide, while the electronics engineer will design the smoke detector that utilizes the carbon monoxide component and other components like an LED light, perhaps an LCD screen, a heat detector…etc. The electronics engineer may still have to incorporate resistors, capacitors, inductors, transformers…etc.