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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
IC stands for Integrated Circuit, which basically means that something that would earlier have been built with several separate components can now be built with something that looks just like one single component.
And a timer is a timer, somethings which counts down and then cause something to happen once the preset time has run out
It measures the time it takes for a radio signal of a particular frequency to travel to a target and back. It also measures the strength of the signal when it returns. Based on the travel time of the signal, the radar can measure the distance of the target. Once the radar receives the 2nd signal, it can calculate the velocity of the target. The strength of the signal can be used to determine the size of the target.
What is the importance of voltage?
importance of voltage is the potential difference between two points.
The main factor which differentiate a de mosfet from an e only mosfet is the absence of?
conductiong channels
Xor gates are a type of logical gate that returns true if both of the two inputs aretwo different Boolean (true/false) values. The xor gate is also called an "exclusive or" gate because one input has to be true to return true, but not both. Here is a table of input values and return values for an xor gate.
Inputs | Return Value (Output)
- true and true | false
- true and false | true
- false and true | true
- false and false | false
Can a transistor can act like resistor capacitor inductor?
A transistor acts like a resistor when Gate is connected to Source.
Why are inverters on the output of the 74LS138 CHIP?
In high-performance memory systems these decoders can be used to minimize the effects of system decoding. When used with high-speed memories, the delay times of these decoders are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible. The DM74LS138 decodes one-of-eight lines, based upon the conditions at the three binary select inputs and the three enable inputs. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented with no external inverters, and a 32-line decoder requires only one inverter.
What is CT burden in electrical engineering?
CT (current transformer) Burden is the maximum load that the CT secondary can drive (e.g. meters or protection relays)
Why do you care about burden when ordering current transformers?
The burden is the termination impedance of the measuring instrument. The measuring instrument can be an analog or digital energy meter, a data logger or a recorder. All instruments that use a current transformer to measure line current must terminate the CT with a resistance (impedance in same case which means there is some inductance involved).
A CT supplier should be given the burden when ordering. Technically, the total burden for a CT is the internal winding resistance, the connecting lead resistance and the measuring instrument input resistance.
Some Ct's are installed a long distance from the measuring instrument and the connecting leads can have a resistance as much as 0.002 ohms per foot (both ways because the current makes a complete round trip). This resistance will cause an error if not taken into account.
What is the difference between a PIC chip and a 555 chip?
PIC's are programmable microcontroller chips made by Microchip Inc. PIC's can be programmed to do timing functions, but they can do many other things as well.
555's are dedicated purpose timer chips made by several different manufacturers. They have no intelligence, they are strictly analog electronics.
How do you convert ohms to mega ohms?
A Megohm is one million ohms. To convert ohms to Megohms, divide by one million.
Where is a variable resistor in your home?
If you have a light switch where you can brightener it or dim it that is a VARIABLE RESISTOR.
Explain how a current flows in a semiconducting diode in the two states of biasing?
Let me answer as I've learned.
In this case, if the voltage source for forward bias is greater than the voltage source for reverse bias, current will flow in this semiconductive diode.
And another way may occur. That is, in case reverse bias voltage is as large as breakdown voltage, reverse breakdown current ,which is because of the minority carrier in p region, will flow and this current can be large to damage the diode.
If there is any mistake in my answer, please correct me and I'll thank you for that.
Yes, use a ladder diagram.
Download lanschooled or simply pull the internet cable out of the back of the computer.
Download lanschooled or simply pull the internet cable out of the back of the computer.
If you pull out the network cable, you will no longer be conected to your schools network, meanig you wont be logged onto anything and wont have internet aCESS
What are the criteria for choosing a microcontroller?
1. Meeting the computer needs of the task efficiently & cost effectively-
· Speed , the amount of the ROM & RAM, the no. of the i/o ports & timers, size, packaging, power consumption.
· Easy to upgrade.
2. Availability of software develop tool-
· Assembler. Debugger(use in check syntax), Compiler, emulator(hard wire).
Wide availability & reliable source of microcontroller
What does it mean if a voltmeter has low sensitivity?
Going back in time, meters were rated in ohms per volt full scale sensitivity. This means that if a meter was rated at 20Kohms per volt and it had a 1 volt scale, it would represent a 20Kohm additional load on the circuit it was attached to. In some circuits the additional load could change the operation of the circuit, and/or the measurement. Analog meters usually had this rating. I guess very cheap ones today are still this way.
Modern meters generally have a sensitivity in excess of 11Megaohms/volt, so this is no longer a problem for simple measurements.
Can we use AC capacitor in surge suppression circuit DC?
A capacitor is a capacitor, no matter what circuits you use it in. There is no difference between one used in AC and one in DC, except perhaps the size that is appropriate.
What are the function of transmitter?
function of transmitter:-
1. generate a signal of desired correct transmitting frequency
2. modulation
3. power amplification
What is an arthrogryposis multiplex?
Non progressive disorder with multiple congenitally rigid joints. Associated with a decrease in anterior horn cells and other neural elements of the spinal cord. Normal intelligence. Miller Review of Orthopaedics
