0
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 is it necessary to bias a transistor when it is to be used as an amplifier?
Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail
A: A mother board contains many cards and the communication of these card is essential. What he is looking for a fast I/O BUSS and after that for potential slot expansion.
How does resistance affects voltage?
According to Ohm's law, V=IR.
This means, Resistance is directly proportional to voltage.
Greater the resistance, greater will be the voltage dropped across it.
CommentResistance is not 'directly proportional' to voltage. It is quite independent of voltage, and depends only upon the length of a conductor, its cross-sectional area, and its resistivity.
What's wrong with the original answer is that in the Ohm's Law equation shown (V=IR), resistance (R) is a constant, not a variable!
Why ac current is more dangerous than dc?
no actually dc current is more dangerous than ac because dc is a direct current and has no current zero condition ,which is very dangerous and do not leave us if we get shock while ac current leave us when we get shock
Does a low bandwidth signal have more power than a high bandwidth signal?
A low bandwidth signal does not have more power.
How much does a pythologist gets paid?
An average yearly salaryÊfor specialistsÊin the forensic portion of this field can earn almost $100,000 USD. Other areas such as those related to speech average about $45,000 USD for each year.
What is absolute error formula?
Absolute and Relative Error
Absolute and relative error are two types of error with which every experimental scientist should
be familiar. The differences are important.
Absolute Error: Absolute error is the amount of physical error in a measurement, period. Let's
say a meter stick is used to measure a given distance. The error is rather hastily made, but it is
good to ±1mm. This is the absolute error of the measurement. That is,
absolute error = ±1mm (0.001m).
In terms common to Error Propagation
absolute error = Δx
where x is any variable.
Relative Error: Relative error gives an indication of how good a measurement is relative to the
size of the thing being measured. Let's say that two students measure two objects with a meter
stick. One student measures the height of a room and gets a value of 3.215 meters ±1mm
(0.001m). Another student measures the height of a small cylinder and measures 0.075 meters ±1mm (0.001m). Clearly, the overall accuracy of the ceiling height is much better than that of
the 7.5 cm cylinder. The comparative accuracy of these measurements can be determined by looking at their relative errors.
relative error = absolute error
value of thing measured
or in terms common to Error Propagation
relative error = Δx
x
where x is any variable. Now, in our example,
relative errorceiling height = 0.001m
3.125m
•100 = 0.0003%
relativeerrorcylinder height = 0.001m
0.075m
•100 = 0.01%
Clearly, the relative error in the ceiling height is considerably smaller than the relative error in the
cylinder height even though the amount of absolute error is the same in each case.
Does anyone have a schematic for d-cell relaxation oscillator?
Relaxation oscillators just requie a certain voltage range in which to operate, so most any schematic for one will work, providing you have enough D cells to be able to supply the proper voltage.
Does transformer posses current changing property?
A: Absolutely while the voltage can be changed the current is limited by the design or kva
What does an rs-232 cable look like?
It looks like any other low voltage cable, such as a CAT-5 Internet cable. There are several variants to the RS-232 standard. The standard defines a 25 pin configuration for serial data communications. In many cases fewer conductors are used. Google RS-232 standard for definition of the connectors, cable length, restrictions, baud rates and voltage levels.
What happen when voltage across the pn junction increases?
If the potential across the junction is high enough, then it could cause it to conduct. This is with all diodes and is the forward voltage. If it is not high enough, it will just sit there and not conduct.
What is the sanskrit word for electronics?
The Sanskrit word for electronic device: विद्युत्पत्र उपकरण vidyutpatra upakaraNa
What does RF optimization means?
RF Optimization means radio frequency optimization and it means improving and optimizaing the mobile or GSM network using the exixted and available components only and RF optimization is a department in any mobile operator company.
A: Every device is built to perform into an operating region. which means environment like temperature and/or electrical region. outside of the region it will self destruct
Why intrinsic semiconductor has negative halls coefficient?
The difference in the electron and hole mobilities is responsible for the small negative Hall coefficient of intrisic semiconductors.
Refs: C.M.Hurd : Hall effect in metals and alloys
R.Asokamani :solid state physics
Busch& Schade; Solid state Physics
Explain how Metallic bonds allow electricity to flow?
Metallic bonds are able to conduct electricity only when they are dissolved in a liquid substance or when in molten, this is because these conditions cause the metallic bond to break down and allow the electrons used in the bond to be delocalised and disposited around the molten or liquid. This sea of free electrons is then able to pass through a current and conduct electricity.
What is another word for less damp?
how about: moist, dank or humid.
Another word for 'less damp' is 'drier'.
