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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 a quantity that measures the rate at which work is done?
Work is usually measured in joules, which are a unit of energy. Work/time is called power and is usually measured in Watts (joules/second) other common units of power include Horsepower and ft*lbs /sec.
in short, is is power, which is measures in watts.
What is the cutting voltage of a silicon diode?
It is not 'Cutting voltage' but it is Cut-in voltage'. It is the voltage at which the diode turns ON. For silicon it is 0.7v. After reaching 0.7V diode current starts increasing rapidly for little increase in voltage.
Why does the current decrease when frequency increases?
That depends on actual circuit impedances and without knowing them cannot be answered in any way. But if all the circuit impedances are purely resistive, there will be no change in current flow with any change in frequency.
What happens to ripple frequency when one diode is removed from bridge?
actually a diode is forward biased by at least 0,7 volts.so what it means is that when it is removed that 0,7 voltage drop on the diode is eliminated thus increasing ripple voltage
Resistance (Ohms) = Potential Difference (Volts) / Current (Amps)
So, 12/0.25 = 48 Ohms.
What is the difference between AVR microcontroller and pic microcontroller?
The difference is base on the requirement of their0 application.
The time it takes to fully charge a capacitor depends on the capacitance and resistance of the circuit; the voltage is irrelevant. The equation you need is:
t = 5RC
where: t = time in seconds, R= resistance in ohms, and C =capacitance in farads.
So you should now be able to calculate the time for yourself, but remember to convert the resistance into ohms and the capacitance into farads before you insert the figures into the equation.
Difference between ceramic and electrolytic capacitors?
- In ceramic capacitors the dielectric is a thin layer of ceramic and both plates are metal foil. These capacitors are unpolarized. These capacitors have negligible internal inductance or resistance.
- In electrolytic capacitors the dielectric is an ultra thin layer of corrosion on the surface of a metal foil plate and the other plate is an electrolyte paste. These capacitors are polarized and if connected backwards are likely to explode. These capacitors have significant internal inductance, making them bad filters of noise in the MHz range and above which requires ceramic capacitors.
Can factual information be prevented with bias?
Yes, bias can influence the presentation and interpretation of factual information, potentially leading to distorted perceptions. When individuals or organizations emphasize certain facts while downplaying or omitting others, they can create a biased narrative that affects how the information is understood. This can result in misinformation, as audiences may be swayed by the biased portrayal rather than an objective understanding of the facts. Ultimately, while facts themselves remain unchanged, bias can significantly impact their reception and significance.
Who lights brighter bulb in a parallel circuit?
Yes, since each light would get the full voltage. Be careful if you actually carry out this experiment, that the lights don't get too much voltage. If the voltage is (for example) 110 Volts, and the lights are built for 110 Volts, you would have no problem; in a series circuit they would simply get dimmer.
because the wires are together
AnswerNot necessarily. It depends upon the voltage ratings of the lamps, and whether the voltage across each lamp matches their voltage rating.
How do you amplify video signal?
Voice being analog signal will be converted by an ADC whereby the output is a logic representation of the analog input
How does the brightness of the bulbs in the two circuits compare?
ANSWER
when two bulb are connected in series their will not be any change
ANSWER
What other bulbs? This question doesn't make sense.
Perhaps you are thinking of this: with two bulbs in series, each bulb only gets 1/2 of the energy (or voltage) that a battery makes available, so each bulb is much dimmer than just one bulb attached to the battery would be.
If you have a 1000kva transformer than can you work on that transformer?
No. From what you're saying you're taking the input to the 2kV transformer in a microwave and replacing it with a 1MW input. The transformer will burn in milliseconds of power.
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The installation and maintenance of a 1000 KVA transformer can be worked on in a de energized state. To do so live could be extremely dangerous at any voltage.
In a series rl circuit when XL increases and r remains the same z will?
z=rl +XL in a series circuit. if XL increases and r remains the same, z will increase. z is a complex number and the magnitude is z=(r^2 + (XL)^2)^.5. if the vector part of z increases z increases.
What does digital recording do to an analog sound wave?
It quantizes it into discrete points represented by zeros and ones (digital information). The number of samples must be at least two times the highest frequency component of the analog wave. The number of bits in each sample determines how close the digital information is to the actual value of the analog signal.
What are the differences between binary signaling and digital signaling?
Binary refers to a system which may have one of two states. In computer science the binary numbering system is used where stored and communicated values are represented by 0 and 1. A digital signaling system would be based on an underlying stream of binary numbers so in most cases the two would be used interchangeably. If "binary signaling" where to be taken literally however it would describe a signaling system which communicates two possible states. The flag on a mailbox is a binary communication system, when the flag is up it signals that mail is available for pickup, when it is down there is nothing in the mailbox.
What is the function of Resistance?
A series DC motor has to have a starting resistor to limit the current flow before the speed builds up.
What electrical quantity is the same throughout a series circuit?
In any series circuit, there is one and only one path for current flow. All the current flowing in the circuit will flow through all of the devices in that circuit. A break at any point in the circuit will cause current flow to cease. Lastly, it is current that is the same at any point in the circuit where we'd care to measure it.
Who developed the light microscope?
It was developed, and then you might say improved or modified over time. Zaccharias Janssen and Hans Janssen experimented with lenses that would help make the light microscope, as did Galileo. Anton van Leeuwenhoek also experimented with microscopes and so did Robert Hooke.
What is the average value of an AC voltage that has a maximun peak voltage of 80 VAC?
V_rms = V_peak / √2 so V_rms = 80/√2 = 56.6 V (3sf)
Do you have to refill plasma TVs?
Yes. Due to the fact that they are based on fluorescent (probably spelled that wrong) lighting. Fluorescent lighting uses large amounts of electricity to excite gaseous atoms into plasma, the fourth state of matter where electrons fly free from their nucleus, thus plasma tv's have plasma
