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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 open loop control system is difficult to handle?
its no different than weather forecasting
if the temperature pressure, loading, rpm, viscosity, input, output, and load conditions remain the same open loop is just set and forget
if you flip the light switch the light comes on, no need to confirm that the light is on before walking down the stairs
What is the process called in which a conductor cuts across a magnetic field and produces a voltage?
We call it induction when we pass a conductor through a magnetic field to produce voltage.
16.32 volts
Five 60 ohm resistors are connected in parallel What is their equivalent resistance?
1/R = 1/60 + 1/60+ 1/60+ 1/60 + 1/60
1/R = 5 / 60
R = 60/5
R = 12 ohms.
What does a rapid change of a magnetic field induce?
It does not have to be positive or negative either one will produce reversal of the voltage applied by a factor
What is the undesirable and unwanted effects on the medium?
"What are the undesirable and unwanted effects in the medium?
Why does the midi system have the widest range of frequencies?
The MIDI (Musical Instrument Digital Interface) system has nothing to do with the range of frequencies.
MIDI is a method of communicating between various musical controllers, such as keyboards, and generators, such as synthesizers. The synthesizer is what actually generates the frequency. The MIDI system is simply the messaging subsystem. Think of it this way - one parallel to MIDI is a player piano roll.
Counter type ADC
One of the simplest types of the ADC is the Counter type ADC. The input signal of the ADC is connected to the signal input of its internal comparator. ADC then systematically increases the voltage on the reference input of the comparator until the reference becomes larger than the signal & the comparator output goes to zero.
Fig.1 Counter type ADC
Dinesh Kumar - http://harshit.org
What is open phase in induction motors?
The field windings of a three-phase motor are termed 'phase windings'. An 'open phase' means that one of these windings has become open-circuited -i.e. there is a break in the winding. Unfortunately, however, 'line conductors' are often incorrectly referred to as 'phase conductors', so a break in a line conductor could (incorrectly) be called an 'open phase'!
What is digital signal and how its different then analog signals?
Digital signals have discrete encoded states that they switch between. They can only assume the defined encoded values. Errors can often be easily detected and sometimes corrected.
Analog signals are continuous and change smoothly from one value to another, passing through all intermediate values. There is no way to identify errors.
Image processing encompasses various techniques used to enhance, analyze, or manipulate images. Common types include image enhancement, which improves visual quality; image restoration, which corrects distortions; and image segmentation, which divides an image into meaningful parts for analysis. Other types include image compression for reducing file size, and feature extraction, which identifies and isolates specific elements within an image. Each type serves different applications, from medical imaging to computer vision.
What is the relationship between the length of a co-axial cable and the delay?
Well as length is increased the delay will increase because the signal takes longer to travel to the destination, but i don't know exactly how much delay would be added. Keeping in mind that the RF signal travels at 186,000 miles a second, you will never see or hear a delay.
What is gate delays in transistor logic gates?
the gate delay is the time from applying the signal to the input and getting the signal at the output
digital implies on or off
so when the signal goes to the input it takes a bit of time to rise to a sufficient level to saturate the transistor
there is also a bit of capacitance present so the transistor takes time to drain off all the charge
the smaller the less delay
Why self bias is known as self?
Self biasind is called self because in this biasing, the variation due to change in temperature increases the the collector current, which hence decreases the output voltage i.e Vout=VCC-ICR and maintains the stability
Is kymco agility 50 2014 a DC cdi or a AC cdi?
The Kymco Agility 50 from 2014 is equipped with an AC CDI (Capacitor Discharge Ignition) system. This type of ignition system is common in many small scooters and mopeds, providing reliable performance for the engine. If you're working on maintenance or modifications, it's essential to ensure compatibility with the AC CDI setup.
What is closed loop mean as in vehicle?
Closed loop, as applied to engine control, means as control changes are made, some variable is measured to determine whether the setpoint is reached, or whether more or less adjustment is required. For instance, in a typical fuel-injected vehicle, when you first start a cold engine, lots of fuel is required to keep it running until it warms up. The computer simply dumps a predetermined amount of fuel governed only by engine speed, throttle position, and engine temperature. There is no point in trying to fine tune the fuel delivered at this point, since the mixture needs to be soggy rich just to keep the engine running. This is called open-loop control. Once the engine has reached operating temperature, the computer switches to 'closed-loop' control. This means the computer receives feedback from an oxygen sensor as to whether the mixture is too lean or too rich, then it makes adjustments, then checks the sensor again, then makes adjustments, and on and on in an infinite loop. To understand the principle, imagine if you were to close your eyes and type words on your computer keyboard. If you are a good typist, the words are probably correct, but you have no way to know if you made a mistake. That's open loop control. There's no feedback as to whether the desired result was obtained, you simply have to assume that the correct words are there. Now open your eyes. if you mis-typed a word, you now have the feedback that you messed up, and you can type in a correction. That's closed-loop, from your fingers, to the keyboard, to the screen, to your eyes, which control the fingers. See the loop?
Do you remember black and white TV? I guess its still around in security monitors.
Define Synchronous Digital Hierarchy?
SDH or Synchronous Digital Hierarchy is an ITU (International Telecommunication Union) standard which defines transportation mechanism of digital data over optical communication links. It's equivalent in USA is called SONET. SDH standard defines bit rates and frame structure to carry telecommunications data over optical fiber links. Different nodes in the network are tightly synchronized through precision standard clocks or the clocks extracted from the incoming data streams. The basic date rate for SDH is 155.52Mbps and is known as STM-1 (Synchronous Transport Module level - 1) or STM-0 (51.84Mbps).
It is an abbreviation for Synchronous Digital Hierarchy, developed after Plesiochronous Digital Hierarchy(PDH). It is the technology by which Optical Fibre carries light beams between Transmission Equipment from different vendors, but still able to interface each other with perfection, adhering to international standards(e.g, ITU-T)
