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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 the equation for power current and voltage?
1. Formula with respect to the current(I) & resistance(R)
V = I.R
2. Formula with respect to watt power(P) & current(I)
V = P/I
How voltage stays constant in a closed electrical circuit?
A voltage regulator. Examples are the 78dd series of regulators where dd is the voltage, e.g. 7805, 7812. These work with a positive rail, the 79dd regulators work with a negative rail.
Which instrument is suitable for measuring both a.c. and d.c. quantities.?
We use the "MOTOR GENERATOR SET" to convert the DC power to AC power we use DC motor and ac generator in it. It is very efficient way to convert the DC power to AC power.
A circuit flow on a open switch?
no because when you close it, the circuit is complete so it lets the electrons pass through
The frequency is 300/30 = 10 Hz
The time period is 30/300 = 0.10 seconds
How do you calculate voltage efficinecy in DC voltage?
The efficiency of a device in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed.
Scroll down to related links and look at "Electrical efficiency - Wikipedia".
How do you test a thyristor module using multimeter?
You can check if it is shorted, but without coordinating the gate and anode voltages with the cathode, you cannot test a thyrister (SCR) with a multimeter. Check it out of circuit for shorts, then check the circuit, then test it in operation. Anything more advanced will require an oscilloscope.
its also named as potential transformers...it is one type of instrument transformers used to measure high range voltages using low range volt meters. basically it is used to extend the range of meters.
Why thyristor is also called as silicon controlled rectifier?
For the same reason that its used in transistors and resistors...Its a semiconductor.
What are the examples of electronic tools and equipments and their functions?
One example of a circuit device is a switch. It is used to stop and start current flow in a circuit.
Which integrated circuit chips are used in a modern computer?
The microprocessor is the most common integrated circuit chip that is used in modern computers. The microprocessor is a multipurpose, programmable device, and processes data according to instructions stored in its memory thus providing the results as output.
How much current flows through a 12 ohm flashlight bulb operating at 3.0 volts?
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
What happens to d.c motor when Field is weakened in DC?
when the field winding of dc motor opens the flux is zero so the speed is inversely propotional to speed ,so motor runs at dangerous speed...........
(R1 * R2) / (R1 + R2) = 2 Parallel
R1 + R2 = 9 Series
Treating the two as simultaneous equations, and substituting for R1:
((9-R2) * R2) / (9 - R2 + R2) = 2
R2^2 - 9R2 + 18 = 0
Solving the quadratic, we get:
R2 = 6 ohm R1 = 3 ohm
Which you can check by substituting back into the original equations.
What is functions transistors?
Transistor amplify and switch electrical power and electronic signals. These are made of semiconductor material with three or more terminals used to connect to an external circuit.
Do 1080p TV sets convert 1080i signal to 1080p format?
All LCD displays use progressive scanning, namely the whole frame is built up line by line rather than odd lines followed by even lines. Therefore, by default, 1080i will be converted to 1080p, but at a frame rate of 25Hz or 29.97Hz. 1080p sets take 1080i cable or satellite signal and convert (deinterlace) it, creating a progressive scan, meaning the picture is painted from the top to the bottom line (there are 1080 such horizontal lines) in a single pass, and this process (in the US) happens 60 times per second. 1080p is normally run at 50Hz (Europe) or 59.94Hz (North America). 1080i is normally half that frequency. Even if the signal is converted from 1080i to 1080p, there is no additional picture information and therefore, little is gained by the conversion. If the television actually does the conversion, it is worth doing a comparison between converted and unconverted to see which produces the most pleasing results.
What is the main advantage of digital transmission over analog transmission?
digital signal is less susceptible to signal degradation due to the nature of it's transmission signal which is either on or off and therefore less errors occur as analog is prone to signal degradation and loss that is why digital tv is crisp and clear and analog is somewhat blurry in comparison, also with higher bandwidth achievable by digital transmission more data is able to be transmitted.
How do vegetables conduct electricity?
its cuz they r so awesomely electric if u eat an aple u can get shoked and die
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The vegetable to conduct electricity it must contain free ions like in lemon, which contains free ions as it is acidic.
There are many types of diodes that are used for different functions in electronics. The most common types include the laser diodes and the light emitting diodes (LED).
True or false in a series circuit circuit current is the same throughout the circuit?
A series circuit only has one loop
What is the name of A variable resistor with two terminals?
hi, the center terminal (attached to the wiper contact) tied to one of the ends????
How do you find the value of a zener diode?
It is depend on your requirement .suppose you need a voltage regulator of 5V than you need 5V Zener diode.
What is difference between signal and frequency?
A Signal is the data being transmitted from one device to another, this includes (but not limited to) binary serial data, pulse width modulation (PWM), sound. The waveform is the shape of the transmitted signal, serial data and PWM would take on a square wave waveform whereas sound from a speaker would appear (generally) as a sinewave.
Not much a of difference between the two, but that is because the two are mutually inclusive to each other.
