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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
Is speaker output analog or digital?
Bluetooth is a digital communication interface. It tends to be used for audio signals more than other applications so it is often perceived as carrying analog audio. Despite the appearance, it is definitely digital and not analog.
What do you need to have a simple circuit?
Take a battery, a wire and a little light bulb. Put the wire on the flat part of the battery then put the other end of the wire on the side part of the bottom of the light bulb. Put the end of the light bulb on the top of the battery, dont touch the wire to the top when the light bulb is on it because is either shocks you or doesnt work.
I am not sure what exactly you expect.
No: You can't violate the Law of Conservation of Energy.
Yes: An electrical signal can be amplified - if you provide the power to do that from some source.
Also, without input of additional energy, with a transformer you can increase the voltage (while reducing the current), or increase the current (while reducing the voltage).
Can you calibrate voltmeter on multimeter or multimeter on voltmeter?
how which is right and which is wrong. You need a voltage standard with that you can calibrate both to the standard
Claims about perpetual motion machines are always false because they ignore the inevitable losses of energy which must be overcome to make any machine operate so that it can do its intended work. Such losses mean that any machine, whether electrical or mechanical, must be supplied with more input power than it can convert into output power.
In the case of electrical machines there are many reasons for energy losses:
Bearing friction losses; "windage" losses caused by air having to be moved out of the way by spinning parts such as rotating armatures and cooling fans; magnetic hysteresis losses absorbed by eddy currents flowing in rotor armature and stator laminations; commutation losses in dc machines and slip ring losses in ac machines; excitation losses caused by the need to supply energy to the coils in the stator of a machine in order to magnetize it; general electrical resistance losses caused by the need to use energy to force electric currents to flow through the windings of any electrical machine.
Whilst engineers have found ways to reduce each one of those types of loss to a minimum, it is still a fact of life that no electrical machine can be 100% efficient. In the case of a motor, it will always require more energy to be supplied to it than it can convert to mechanical power. In the case of a generator, it will always require more mechanical power to be supplied to it than it can generate as electricity.
Some electrical machines have a power-conversion efficiency of up to 80% but most have efficiencies much less than that. If a motor and a generator were linked together to form a motor-generator set (the motor driving the generator driving the same motor) then, if both machines were as good as 80% efficient, that would mean the combined efficiency of the system of would only be .8 x .8 = .64 i.e. 64%. In other words, to keep the motor-generator set running, additional power equal to at least 36% of the motor-generator set system's own power would need to be supplied from an external source.
Those facts make the set-up described in the answer to this question shown below pure nonsense. Period.
What are the applications of a capacitive transducer?
Capacitive sensors are used mainly to detect proximity, usually that of people. The operating principle is that the capacitance of the capacitor varies as material comes between the two plates of the capacitor, and you can determine the presence of something via the measurement of the capacitance.
How do you test a closed circuit?
we can make an open circuit by disconnecting the wire or break the circuit and a closed circuit is made by connecting all wires with the contents of the circuits.
Which is preferred for measuring emf of a cell avoltmeter or potentiometer?
A voltmeter is used to measure voltage.
A potentiometer is used to vary the amount of resistance in a circuit - it has nothing to do with measuring.
A photoconductor is something whose resistance decreases when it's exposure to light increases. As for photography, the only link I know of is that they are used in light meters.
How much do electrical engineers make a year?
National Mean Annual Salary: $66320 National Median Hourly Wage: $31.89
Actually, My Dad is an Electrical Engineer, and he makes $164,000 a year!
AnswerElectrical Engineers design, develop, test, plan,and improve electrical equipment.Engineers should be creative, curious, logical, and detail-oriented. you will need a bachelor's degree in electrical engineering, computer engineering, or electronics.some people then move on to earn a master's degree.once schooling is done, you usually spend 12-24 months in training at your job. When engineers gain experience and knowledge, they may work more independently, making decisions, developing design, and solving problems. With Further experience, you might become a technical specialist, superviser, or even an engineering manager.Many electrical engineers work normally 40 hours a week. The median annual earning for an electrical engineer is $64,910.(the specific salary of an electrical engineer is determined by their years of experience, the size of their employer, and their level of skill/area of expertise).Our society depends upon electrical engineers for computer chips, microprocessors, radar systems, electric utilities, machinery controls, lighting, aerospace navigation systems, wiring in buildings and wiring in autos. Everything that uses, produces or distributes electricity is dependent upon electrical engineers for their development and maintenance.The pay range depends on the particular field of electrical engineering they are working in and what area of the country. East & West coast locations tend to make more. Less in the south and mid-west. Engineers who design products or do research and development tend to make more than electrical engineers working in manufacturing or quality. But it's all highly variable.
About $40K to $60K For an entry level engineer with a 4 yr college degree.
A Senior engineer with a masters degree in electrical engineering and many years of experience can make somewhere in the range of $80k to $100K.
A very senior engineer who is considered to be a techical specialist or an electrical engineering manager who leads a team of engineeris can make between $100K to $170K per year.
EDN magazine publishes a yearly salary survey. Check them out at http://www.edn.com/article/CA6497229.html?spacedesc=readersChoice?text=salary+survey
What are the two kinds of electrical circuit?
There are four types of circuit: series, parallel, series-parallel, and complex.
What is priming of centrifugal pump?
Priming of any pump is the same - it means filling the pump with liquid to get it to pump because the pump will not fill itself with liquid from being dry (it won't self-prime).
any factor which produce motion in a body or tends to move the body..
Not only move the body but also make it change its direction or even its geometry. For instance, if you trip while running, you'll fall, and so your direction will be changed. If you press too hard, you'll smash an egg, so you've just altered the egg's geometry. These are two basic examples.
What process does thyroxin control?
Thyroxine is a hormone, or chemical messenger, that is secreted by the thyroid gland to help regulate metabolic processes and influence physical development of the body.
What is another name for a series -parallel circuit?
series other name current series and parallel is voltage
Can silver be used to make electrical wires?
Silver is used as a low resistance conductive material. Contactors and relays contact points are made of copper and are silver plated to obtain the lowest resistance between the moving contact faces.
Why does the terminal voltage decreases as the load current increases?
A: That will happen anytime the voltage source is not able to provide the power needed for the load. If the load exceed the power available from the source the voltage will be reduced as IR drop from the source
What is the effect of the op amp in the circuit?
So long as you remain with the range of the device (power supply rails less a volt or two), the output of an op-amp will go to what ever value is required to maintain the input stages (bridge) to remain the same. So, the effect on input voltage on output of an op-amp is dependent on the feedback circuit.
How do you calculate KW from Volts?
Kw can be calculated from volts be using the formula
p=(voltage)square/resistance*1000
How much is 45 watts in volts?
Look at it this way... 1 Watt = 1 Volt x 1 Amp Without knowing amperage, your question is unanswerable.
Example - your 110 Volt house wiring can power 40w or 60w or 100w or ... w light. however they all have different currents.
Why are silicon diodes not suited for low voltage rectifiers?
Silicon diodes ARE used in reverse bias. This is the mode in which they do not conduct, which is the principal role of a diode. When forward biased, a silicon diode will conduct but has a voltage drop of around 0.6v so is not useful for rectifying small voltages (unless used as a perfect diode with an op amp).
Is lightning AC or DC voltage?
Lightning is static electricity. It's a buildup of charge, and it is facilitated by charge separation. In that light, it is DC.
How transistor acts as bidirectional?
its because it only allows current to passy through one direction. They are like diodes
Does a capacitor block ac current dc current or both?
No you can't use DC capacitors in Ac because in DC current , the current flows directly while in AC current, the current flows curved zig-zag. Thus Dc equipment can't mingle with AC as they need Direct flow. So DC capacitors can't be used for AC current...................
AnswerMost capacitors will operate on either DC or AC. The exception is the polarised-type capacitor, which is designed to operate with a DC or an appropriately-biased supply.
Often, a capacitor's rated voltages is specified in terms of DC -for example, '100 V (DC)', so care must be exercised if it is to be used with AC. This is because we always measure AC voltages as root-mean-square (rms) values, not as peak values. For example, '100 V (AC)' actually peaks at 141 V*. So, applying 100 V (AC) to a capacitor rated at 100 V (DC) may cause its dielectric to fail. In this example, the maximum allowable AC voltage must be 70.7 V, which peaks at 100 V.
(*To explain: Vrms = 0.707 Vmax )
