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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 does a battery give DC and Not AC?
The voltage between the two electrodes of the battery depends on the redox reactions going on at the electrodes. The overall reactions stay the same, so the electromotive force stays about the same too. The electromotive force is however dependent on the concentration of the reactants the electrolyte, and the voltage at the outside of the battery depends on the internal resistance of the battery as well, which can be much higher when the battery is used.
A battery is energy stored in a chemical way. When "converted" into electricity, the chemical looses power, either going from a base of very low PH to neutral or from a base of very high PH to neutral.
A fresh battery gives out a "high" voltage and slowly as it is discharges, the electrolyte inside will reach a PH of 7 (neutral) and voltage drops accordingly.
The voltage can not drop below zero, as the electrolyte has lost all its power when it reaches a PH of 7.
Chemical reactions work only one way, reaching PH Neutral as its ultimate goal, where as in AC one have mechanical movement of wire in a magnetic field.
No movement, no electricity. When the wire moves in a magnetic field it produces electricity, but only as long as the magnetic field constantly changes from North to South and back to North again. It is this that creates AC or alternating current, hence the Alternating magnetic poles.
How the differentiation of the signal amplifies the noise?
any signal, be it be noise is composed of sinusoids...so when one differentiates sinWt with respect to time it becomes WcosWt ...hence the signal gets multiplied by W..
How much power does a DC to AC inverter use when not used?
One 150 watt inverter reports 0.2 Amps (=approx 2.4watts)
Another inverter (180 watts?) reported 0.4 Amps
If you find a fairly complete spec sheet, it may tell you the Amps or Watts that it uses under "No Load".
I'm the originator of the question, and I discovered the "additional" specs.
What are the advantages of staples over sutures?
A distinct advantage that staples have over sutures is their quick placement--stapling is approximately three to four times faster than suturing. Staples are also associated with a lower risk of infection and tissue reaction than sutures.
What is open circuit and short circuit?
Consider two points (A and B) in an electric circuit. An open circuit between A and B means there is no electrical connection between A and B. A short circuit between A and B means there is an electrical connection between A and B.
How many amps does a five horse power motor draw?
It depends on the voltage-- I think at 110v it's 4 amps per hp
How does an electrical generator work on the basis of the principle of electromagnetic induction?
hope this helps :)
What is the main difference between earth wire and fuse wire?
=== === Fuse wire is just as its name implies: it is some wire made specially to carry only a certain amount of current, which is known as its "designed failure current", when it is being used in a cartridge or a rewirable a fuse carrier that is wired with a certain length of the fuse wire. If the current passing through the fuse exceeds that designed failure current the fuse wire gets so hot that it melts and breaks the circuit. That should help to protect the power supply cables from being overloaded as well as protecting the supplied appliance or appliances from being damaged. In either case the fuse should help to prevent a dangerous fire from starting. A fuse may also help to prevent a person using an appliance from getting a dangerous electric shock but that is not the main purpose of fitting a fuse.
The main purpose of fitting a fuse is for overload and fire protection. Earth wire is, again, just as its name implies: it is wire used to connect the frames and outer casings of appliances and power supply panels to the earth. See the related question and answer for more details about this.
=== === <><><> It is easier to say what is similar, since they are completely different things.
They both conduct electricity, are usually made of metal, and both are important to safety. Other than that, they are nothing alike.
A fuse is a device that breaks the circuit when the current exceeds a predetermined value.
An earth wire, also called the ground wire, as the name implies, connects a circuit or a device to ground.
What is the thickness of the depletion layer in a semiconductor?
The thickness of the depletion region or depletion layer (and there are other terms) varies as the design of the semiconductor. The layers in a semiconductor are "grown" (usually by deposition), and this can be controlled. The typical depletion region thickness in an "average" junction diode is about a micron, or 10-6 meters. Junction "construction" presents major engineering considerations to those who design and make semiconductors as there are many different kinds. A link is provided to the section on the width of depletion regions in the Wikipedia article on that topic.
What is the function of a car control arm?
The control arms are what holds your wheels and tires to the frame of your car and allows the wheels to go up and down when hitting bumps while staying straight and perpendicular to the road.
ADVANTAGES OF IDS
Capacitor contains a dielectric sandwitched between two plates.
So, it act as a charge storage device.
When dc supply is given,it gets charged to its maximum capacity or potential equal to the supply, and then it act as a open circuit, since it has no way to discharge.
a potentiometer is a varible resistor use as a voltage provider.
A type of "pressure" that drives electrical charges through a circuit. Voltage is how the electric potential energy differences are measured.
Why 60w bulb more bright than 100w bulb connected in series?
There is insufficient information in the question to answer it. In series with what? Please restate the question.
What is a shield for Arduino and do I have to buy it if I already had an Arduino board?
A shield is essentially a "daughterboard" of a PCB that has pins to match the female pin headers on a standard format Arduino board. You build your circuits/connections of sensors (switches, light, sound, temperature sensors, etc.) and outputs (LED's, displays, etc.) on a shield as an efficient way to mate the inputs/output connections to an Arduino board. A shield is not required but is highly advised as a way to insure solid connections and organization of connections. For more information see:
What is inductance and capacitance and impedence?
The inductance of an inductor is the capacity of the inductor to induce electric flux.
The capacitance of a capacitor is the capacity of the capacitor to store charges.
THE IMPEDANCE OF A CIRCUIT IS THE TOTAL OPPOSITION OFFERED TO THE FLOW OF ELECTRIC CURRENT.
The answer would be d 900Hz, because it is 900 is not 200 does not go into 900 evenly. The pipe will resonate a frequencies that 200 will go into evenly.
Why ammeters are connected in series?
Because, in series connection the current is same in all resistors, so the ammeter deflection for finding current is same in each ammeter.
Being an Electronics and Communication Engineering student the necessities for studying Thermodynamics are the followings- 1. In many engineering fields like Robotics, while designine circuits, one must take into account the heat produced in the circuit and push them away from the circuit components. 2. While designing any computer controlled air-cooling system, one is to deal with the core things of Thermodynamics. 3. Today's technology is completely turning towards automation system where all types of mechanical and applied science applications need to be converted into programming based/microchip based/wireless communication based system. If one asks to design any microchip for such application, one must have knowledge energy conversion system such as heat; and therefore requires knowledge of thermodynamics. Because, thermodynamics not only deals with heat energy, but also does with all types of energy conversions, their mathematical derivations and important ratios.
A: simlator is nothing but a simulator is a program that closely simulates the actual application design
It doesn't matter, unless we're talking about some bulbs with integrated switching power supplies, in which case it might make sense to offset (distance) them by about (SwitchingFrequency / NumberOfBulbs) Hz, to make the general load appear mostly resistive. But in about 99.9% of the cases, the placement of a load (and a light bulb is a load) does not change the amount of current it uses as it's a property of the light bulb itself.
Of course, with LED lights it's possible to "go creative" with the placements of the LEDs and their resistors in such a way as to minimize current draw and power dissipation through heat, but I fear the gains would very well be rather negligible. Also, in-depth knowledge of said resistors and LEDs would be needed if someone were to undertake such an endeavour.
