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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
Can I use a 9 Volt 1 Amp power adaptor in place of a 5 volt 1.2 Amp adaptor?
No, the voltage of the replacement adapter must always be IDENTICAL to the original adapter and the current of the replacement adapter must be the same or larger than the original adapter.
Trying to use a 9 Volt adapter to replace a 5 Volt adapter will almost certainly completely destroy the device the moment you plug it in.
You did not say whether the adapters provided AC or DC or the polarity if DC. Either way both the replacement adapter and the original adapter must be IDENTICAL in this respect.
What is what is the clock in modulation?
Clock in modulation refers to the timing signal used to synchronize the modulation process in communication systems. It ensures that the transmitter and receiver are aligned in time, allowing for accurate encoding and decoding of the information being transmitted. The clock signal can influence the data rate and overall performance of the modulation scheme, making it critical for effective communication. Proper clocking helps to minimize errors and improve the integrity of the transmitted signal.
What does a standing wave result from?
Standing waves are also known as stationary waves. They are waves that remain in a constant position. This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions.
Is modulation needed for digital data transmission?
Modulation is only required if the data is being sent over a radio wave, or a laser beam.
And even in the case of a laser, if you are content with on/off data streams, then there is no underlying signal to be modulated.
Essentially all of the data whizzing round in your computer is doing so without the benefit(?) of a carrier - the wires are sufficient.
Which is the best Distributed Control System?
DCS selection shall based on the following criteria
- Ease for peer peer communication
- Global Tag database
- Ease for configuring Trends , Alarms , reports , documentation instaneously for the tag
- Third party connectivity
- Interface to standard communcation protocol
- Server redundancy
- Smart client possibility
- Loop tuning from the central location
- Standard Face plate and its configuration
- Centrally engineering can be done for all the connected devices and controller.
- Easy configuration
- Reporting facility
- Online documentation
- Alarm Management
- Integration with the HT relays.
- Single solution for the complete plant
This is wat one can get in ABB 800xA system.
From Meena
How depletion width varies with biasing voltage?
when the diode is applied forward bias voltage the width of depletion region gets reduced the barrier voltage decreases there by facilitating the easy exchange of holes and electrons.
when the diode is reverse biased the width of depletion region increases there by hindering the flow or exchange of charge carriers.
What is the physical interpretation of bessel function?
spherical bessel function arise in the solution of spherical schrodinger wave equation. in solving the problem of quantum mechanics involving spherical symmetry, like spherical potential well, the solution that is the wave function is spherical bessel function
Define failure rate in reliability?
When determining how reliable something is, a benchmark called "Mean Time Between Failures" is often used. It's usually represented as "MTBF". That means, the average time that a component will operate continuously.
Binary adder-subtractor combine circuit?
Switch Mode (SM) is a control input to the circuit to switch between addition or subtraction operations.
Adder
When SM = 0 the circuit is equivalent to Binary Adder.
A + B (bit ) XOR 0 = A + B (bit)
Subtraction
When SM = 1 the circuit is equivalent to Binary subtraction.
A + B (bit ) XOR 1 = A + invert(B (bit))
'B' input becomes inverted in this case.
What is the analog sampling rate of the MSP430?
The ADC10 peripheral on most MSP430s can sample at upwards of 200 ks/s.
Where you use damping resistor?
Damping Resistor on Inputs/Outputs (R)
Series damping resistors (SDR), denoted by R in the device number, are included at all input/output and output ports of designated devices (see Figure below). The SDRs limit the current, thereby reducing signal undershoot and overshoot noise. Additionally, SDRs make line termination easier, which improves signal quality by reducing ringing and line reflections.
This tutorial is based on the Understanding and Interpreting Standard Logic Data Sheets application report (SZZA036).
Which bulb is brighter a 60W or 30W in a series then in parallel then separate circuits?
In series, a 30W incandescent lamp dissipates twice as much power as a 60W unit
designed for the same supply voltage. While it's difficult to estimate how much of
that power will be in the form of visible light and how much as heat, we're guessing
that their comparative visual brightnesses will track the total power dissipation of
each lamp, so the 30W will appear brighter than the 60W.
In parallel, or in separate, independent, unconnected circuits on separate power supplies,
the 60W lamp is brighter than the 30W unit designed for the same supply voltage.
Note: Plugging two bulbs into any two separate outlets in the same house
normally connects them in parallel.
What is the purpose of impedance phlebography?
Impedance phlebography may be done in order to: detect blood clots lodged in the deep veins of the leg, screen patients who are likely to have blood clots in the leg, detect the source of blood clots in the lungs.
A neeble is the half of a byte...or 4 bits WRONG ACTUALLY a neeble is a knee that is the size of an eyeball, eg that of the lovely EMMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA NEEBLE MCGEEBLE YEAH!
Why do you give prefer digital upon analog?
digital yes. its more convenient and requires less thinking power. Absolutely no. require the same knowledge. but digital can only have two states where is analog has infinite states.
The primary and secondary windings of a transformer are generally wound around tubular-shaped 'formers', and are fitted, concentrically -in other words, they are installed one around the other, and over the same limb of the transformer's laminated core, with the higher-voltage winding outermost. The primary and secondary windings are not fitted separately over different limbs, as represented in schematic diagrams of transformers.
In larger transformers, the two windings must have sufficient separation between them to allow for the circulation of oil. This oil has two purposes. The first is to provide insulation between the primary and secondary windings, over and above the insulation around the wound conductors. The second is to enable circulation for cooling -either by natural convection or by forced circulation.
The actual separation between the primary and secondary windings depends upon the voltage differences between the two windings. Greater voltage differences require greater separation. Typically we are talking in terms of tens of centimetres.
What are two classic simple harmonic oscillators?
A simple harmonic oscillator is any system that when displaced from equilibrium wil satisfy the equation
F=-kx
Where F is the force (mass times acceleration), k is a constant, and x is the position of the oscillator.
The classical example of a harmonic oscillator is the mass on a spring. When you displace the mass, the spring will cause the mass to oscillate back and forth in the direction of the string. In this case, k is the spring constant, a value that effectively tells you how stiff the spring is.
The second classical example is the small angle pendulum. When you move the mass on the end of a pendulum by a small amount, gravity will pull it back towards the lowest point and create an infinite oscillation. The k in this example is equal to m*g/l where m is the mass of the end of the pendulum, g is the acceleration due to gravity (9.81m/s²) and l is the length of the pendulum.
In reality however, these systems rarely display simple harmonic motion. Due to the effects of air resistance, these systems are constantly being dampened and behave in a much more complex way. In addition, the pendulum case only works for small angles due to an approximation used in the derivation of the formula. Anything more than about 10 degrees and the equation will soon stop describing the actual motion.
