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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 negative feed back desire for amplify aplications?
Negative feedback mechanisms are crucial for amplifying applications because they help maintain stability and prevent runaway effects in systems. By providing corrective responses to deviations from a desired state, negative feedback ensures that processes remain within defined parameters. In applications, this leads to improved accuracy and reliability, as the system can adaptively respond to disturbances, enhancing overall performance. Ultimately, the desire for negative feedback in amplifying applications stems from the need for control and precision in dynamic environments.
Why should you never measure resistance in a circuit carrying a current?
Ideally true, but seldom so. The vast majority of resistance meters use current to measure resistance and just use V=IR to give R - the resistor is in a circuit carrying current. The only method that does not have a current through the resistance, it actually relies on the fact, is a Wheatstone bridge. The most important reason for not having a current is that you will be using a current in most cases, to meaure the resistance. Current from another source will screw the reading. Also, with a current flowing, you are not measuring resistance - you are measuring impedance - a combination of inductance and resistance.
In simple way resistor bank contains number of resistors in series or parallel combination.
They are connected in parallel to decrease the resistance and increase current rating and power dissipation.And they are connected in series to increase resistance and power dissipation.
The card states it only gains points for cards removed from play by it's effect. Therefore, it only counts the (up to) five cards you remove upon summoning.
Which IC gates will have a low output if either of the inputs are high?
A 2-input NOR (Negative OR) Gate produces a low output when either input (or both) are high.
What happens to the amount of current in a series circuit as the number of batteries increase?
it increases
What is the difference between field current and voltage?
Field Current in a DC Motor is the flow of electrons through the field circuit by a field controller. The flux of the motor, that with the armature current generates torque, is directly proportional to the field current.
Field Voltage is the electrical potential energy applied on the field circuit by a field controller.
Legacy Field Controllers controlled the field voltage. Using I=V/Z (Z=R+iX) the field current is then indirectly controlled. Due to the heat generated by E=i2 R t in the motor, the resistance R would decrease, increasing the field current and therefore changing the base speed of the motor and disturbing the control.
Newer field controllers control the field current eliminating this problem
Why is the UJT 2N2646 so called?
Here 2 refers to 2 junctions, N - npn type, 2646 - device id number.
Though it have one junction, it has been named to have 2 junctions, as it can act as good transistor
When there is a very current flow with virtual no voltage caused a hard wire short
Where does the word current come from?
Originally from Latin currere, which means "to run". The -ent ending comes from French. Electrical current and water current have the same meaning.
Why Microwave SDH Radio can not go beyond STM-1 bandwidth?
Ofcourse BW will play its own role. But, present situation limitation of ADC speed, signal processing chip speed limitation and high data rate modem implementation complexity will play the major role.
In future, if any one invent modulation with magnetic force, it may be possible.
Is amplitude measured from medium to crest?
the question is asking if the amplitude can be measured by medium or crest and the answer is CREST
Why the antenna of radio are vertical?
Not all radio antennas are vertical.
The main reason radio antennas tend to be vertical is convenience of mounting. Many early radio antennas were long horizontal wires strung between two poles or trees. This was also a matter of convenience in mounting such a long antenna (e.g. 50 feet to 100 feet in length).
When you are operating radios in the VHF or UHF band a vertical or horizontal mounting of the short antennas used at these frequencies might be selected to improve reception of a polarized radio signal sent by the transmitter.
How the OFDM signals are generated?
alam niyo kung sino man ang sumasagot katanungan na narito please stop kasi kami humihingi kami ng sagot yung tmang sagot sayang ang pera na aming ibinabayad so please stop.
When is the probe ground clip required to be connected when taking oscilloscope measurements?
Hi,
It's generally required at all times, but there is a problem though with most o'scopes, and that is that the o'scope's ground connection is also connected to AC ground through the AC power plug.
The best way to circumvent the possible shorting of the circuit you're testing, you should use an AC isolation transformer on the o'scope. This removes the AC ground from the scope but allows you to retain the signal and AC ground on the device being tested.
Hope this helps,
Cubby
Radar can operate at frequencies as high as what?
typical usage VHF, 50 - 330 Mhz. Very long range UHF 300 - 1000 Mhz. Maximum 12500 Mhz
