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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
What is wavelength division multiplexing?
Primarily used in fiberoptics, but generally applicable, WDM is a way of transmitting more data by separating channels by "color". For example, you can transmit one message with blue light and another by yellow light and another by red light. Then you can separate them at the receiver. More specifically, you can use thousands of very narrow wavelengths in a single fiberoptic cable to increase the communication capacity enormously.
A measure of resistance to electricity?
The measurement of resistence to electricity is called Ohms. It was named after Georg Simon Ohm, a German physicist
What is the condition for linear phase response of FIR filter?
an FIR filter has linear phase characteristic, if coefficient symmetry (or antisymmetry) with respect to h(N/2) applies. ex: h(n)={c0,c1,c2,c3,c4,c5,c6}, then the corresponding FIR filter would have linear response if: c0=c6, c1=c5, c2=c4.
What is affect of using a 3 ohm speaker with a 100 Watt amplifier?
Amplifier power and impedance are not related, although a lower impedance speaker will be louder. Most home stereos cannot drive loads below 4 ohms, however, so using this 3 ohm speaker with a home theater may cause the amp to go into protection mode or shut down completely. Check your owner's manual to see what impedance of speaker your receiver can safely drive.
What are the applications of Maxwell bridge?
for a joke - Maxwell Bridge is connecting two sides of the Wabash River.
How are parallel resistors connected?
If you need a resistor of a certain value, and you have no resistors with small enough values,
you can create the one you need by connecting several of those you have in parallel.
The effective net resistance of resistors in parallel is always less than the smallest individual.
And the more resistors you add in parallel, the smaller the net effective resistance becomes.
Why LED is used in the circuit diagram explain with reason?
Without seeing the actual diagram no real answer can be given.
LEDs are used to generate light, often as status indicators.
Generally any current flow above what is considered dangerous?
Generally, any current flow above 10 milliamperes (mA) is considered potentially dangerous to human safety. At this level, it can cause muscle contractions and impair a person's ability to let go of an electrified object. Currents above 100 mA can lead to serious injuries, including ventricular fibrillation, which can be fatal without immediate medical intervention. Always exercise caution around electrical sources to minimize the risk of electric shock.
How do you set a variac to zero volts output?
One should be able turn the variac all the way to one end of its stroke (typically left), so that the brush contacts the windings right where the neutral connection is. If you cannot, perhaps the stops need adjusted, the brush needs re-aligned/replaced, or the windings need cleaned.
What would be the result when both JK flip flop logic 1?
When the inputs J and k of the JK flip-flop are set to 1, the output toggles.
How do you input float into an array?
#include
using std::cin;
using std::cout;
using std::endl;
int main()
{
int myArraySize = 10;
//array of type float declaration and initialization of all elements to zero
float myArray[myArraySize] = {0.0f};
cout << endl << "Enter element of your array (of type float)..." << endl;
for(int i(0); i < myArraySize; i++)
{
cout << endl << "Enter " << (i + 1) << " element: ";
cin >> myArray[i];
}
cout << endl << "You have entered: " << endl;
for(int i(0); i < myArraySize; i++)
{
cout << (i + 1) << " element: " << myArray[i];
}
system("PAUSE");
return 0;
}
Why is it harder to receive FM broadcasts in some areas?
I think it is because you may be too far from the tower broadcasting that station for it to come through clearly.
Is 150K ohms equal to 1.5M ohms?
A lower-case 'k' stands for kilo which is 1000.
An upper-case 'M' stands for mega which is 1 000 000.
so 150 000 does not equal 1 500 000.
How refrigerators system is closed loop control system?
A refrigerator operates as a closed-loop control system by continuously monitoring and adjusting its internal temperature. It uses a thermostat as a sensor to detect the current temperature and compare it to the desired setpoint. If the temperature deviates from this setpoint, the control system activates the compressor to cool the interior until the desired temperature is reached, after which it turns off. This feedback mechanism ensures consistent temperature control, maintaining the efficiency and effectiveness of the refrigeration process.
How has thyristor term been coined?
The term "thyristor" was coined from the terms "thyratron" and
"transistor". A thyratron was a gas-filled vacuum tube switch -
when triggered, it developed a low impedance path from cathode to
anode, and that path stayed in place until the current through the
tube ceased - you couldn't "turn it off". The thyristor was seen as
a "solid-state thyratron".
I wanted the theory for implementation of full adder using 3 to 8 decoder and 4 input nand gates?
A full adder is a logic circuit that take two inputs and a carry input, and produces an output and a carry ouput. It is one stage in a multi-bit adder. The truth table is: ABC RC D
000 00 0
001 10 1
010 10 2
011 01 3
100 10 4
101 01 5
110 01 6
111 11 7
The columns are A, B, Carry Input, Result, Carry Output, and Decoder Output You can use a 3 to 8 decoder to generate these 8 lines. Look at the R and C outputs, and note that there are 4 combinations of inputs thet generate a 1 or a 0. For each of Result and Carry Ouput, connect the decoder output representing the 0 state to those four lines. (Result = 0, 3, 5, 6. Carry Output = 0, 1, 2, 4) What you are doing logically is or'ing the lines to produce the 1's. Since you have nands instead or ors, treat the nands as nors and pick the opposite inputs.
