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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
The short answer is that with more individual coils in the rotor (and the increased number of commutator segments necessary to support them), the motor will run more smoothly. At each transition, the rotor will want to slow down a bit, but with a large commutator and lots of coils in the armature, the motor will transition more quickly to the next segment (for a given RPM) than a motor with fewer segments. The motor runs more smoothly. The drawback in making a motor like this is the increase in cost. A more economical motor is constructed using fewer windings in the rotor. The trade offs must be considered based on application and the economics of that application.
How much amount of heat will produce in 22kilo ohm resistor?
If the resistor is conducting electrical current, then the power it dissipates (heat energy per second) is
(current through it)2 times (22,000)
or
(voltage across it)2 divided by (22,000).
If the resistor is connected in an unpowered circuit, or stored in a drawer, then it dissipates zero heat.
The Apple Corporation invented the iPhone.
Jonathan Ive, head of design at Apple, invented the iPhone 4.
Who invented the iPhone? More than person did so. One of them is Charles J. Pisula.
Who is computer engineering technologist?
I think there are two branches of computer engineering technology:
Hardware and Software
Hardware : Focusing on making a computer itself and make sure it can run (Basically work on everything you see or can touch) They need to know some programming.
Software: Focusing on Programming the machines. (work on everything you can't fiscally see or touch) Coding, designing the database or operating systems.
So you call those people: Hardware engineer and Software engineer
Thank you
Dariush from Wickenburg.net
What is the advantage of sending a pilot carrier with modulated signal?
while demodulating the modulated signal using coherent detection at the receiver end we need to generate the same carrier which is a very difficult ,it makes the receiver costlier and complex because the signal get distorted during the transmission process so generating the same carrier is quite impossible . if we are required to transmit the message to a large number of receivers than it will become very complex and costly.
secondly when we modulate and send a pilot carrier it become possible to detect the signal by envelope detection method which requires very less circuitry and is very cheap. provided the sum of maximum amplitude of carrier and the message signal must be greater than zero so that the envelope gets a lift up..
the disadvantage of this scheme is that the higher transmission power is required...
What is saturation in current in diod?
When a pn junction is reversed bias practically no current flows through it ,but a very small current flows through due to minority charge carriers ,which is known as reverse saturation current .In p type due to electrons and in n type due to holes .
The db gain is -3.5 what is the ratio of vout to vin?
Gain in decibels is a logarithmic base 2 scale with a multiplier of 3, so 3 db is twice the power, 6 db is four times, etc. Gain of -3.5 db means a power loss of 21.17, or a ratio of about -2.25. Note, however, that this is power, not voltage. Since power is voltage times amperes, and since amperes is voltage divided by resistance, in order to achieve a power loss of 2.25, the voltage must change by the square root of that, so the voltage changed by -1.5.
Why are analog waveforms sampled 8000 per second?
That is what that piece of equipment samples at. Others can sample at billions of samples per sec. It all depends on the A/D sample rate that was picked.
Difference between noise and interference in optical communication?
Interference and noise are distinguished the same way in all situations not just optical communication. Noise is caused by random thermal effects or statistical effects to to the randomized distribution of electron flow. Interference is due to a system being sensitive to external perturbation, due to weather, dust, vibration etc.
agree
How is the resistor behaved at high frequency?
The major problem with resistors at high frequencies is for wire-wound (power) resistors, that will act as inductors at high frequencies. In addition, very small resistors, like chip resistors, can also exhibit capacitive effects. Special high frequency resistors are designed to offset these effect.[1]
An ammeter has a finite resistance which is inserted in series with the rest of the circuit, increasing the total resistance and decreasing the current. A good ammeter has a very low resistance, so it shouldn't affect the circuit noticeably.
How many paths are there in a parallel circuit?
At least two paths. Current will divide between them according to their relative impedances.
What is the Future scope of mini project on automatic room light controller with visitor counter?
the power can be saved
How can you tell whether current is going into or out of a node in a circuit?
When you add up all the currents going into and out of a single node, you have to wind up
with zero, or else you made a mistake adding them up.
multiplexer is a device thet convert all inputs into a single output
What do you adjust to altar the current in a circuit?
i'm not sure what kind of a question u r asking about.
*you kan simply use a resistor to reduce the magnitude of the current.
*If you want to change the phase angle of current, u kan use a capacitor or an inductor
*If u want to increase the current just use a step-down transformer. Note that I increases while the voltage decreases.
*Or more electronically, u kan use "buffer circuits(Unity gain amplifier/voltage follower)".... U kan build a small buffer circuit by LM741 operational amplifier IC....
or better to go for ULNxxxx (e.x.ULN2003) TTL IC for better results having about 8 buffer circuits.
However think about the application first!!!
