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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 a pn junction diode be used as an amplifier?

Never. It is impossible to use diodes for amplification.

What is the time constant of a series RC circuit consisting of a 2000 ohm resistor and a 10 microfarad capasitor?

In an RC network,the Time Constant τ (tau) is calculated as shown below. τ = RC For a 10 kOhm and 100 microFarad RC network: τ = 10000 x 100x10-6 τ = 1 second

True power divided by apparent power?

Real Power: The actual power in Watts or K-Watts in AC or DC Circuits Apparent power: The Power in Inductive or Capacitive Circuits have Phase Lag & Lead measured in Volt Amperes VA or Kilo Volt Amperes KVA

Why AC is generated instead of DC?

Alternating current is much more efficient to transmit than direct current. Using transformers, it can be stepped up to high voltages for transmission over long distances using relatively small conductors, and then stepped down at the destination to provide high current.

What is an electrical device that converts ac to dc?

if its already an ac y u need to convert!......Yes it need to change because in ac supply we need to change the frequency of current so ac to ac converter needed.The name of AC to AC converter is Regulator

What is a tactile signal?

Tactile signals are signals detected by the skin and internal organs such as touch, pain, vibration, heat etc. They are coded by mechanoreceptors which respond to mechanical distortion of the sensory nerve membrane.

What is the difference between digital and analogue?

This is the part of electronics consisting of such circuits which processes analouge quantities is called analogue electronics. And the part of electronics which provides the data in the form of a maximum and minimum voltage signals i.e. By two voltage levels only is known as digital electronics.

What electronic devices contain transistors?

Practically everything. Even devices using electron tubes (e.g. microwave cookers, high power radio and TV transmitters) now generally use transistors to control the tubes.

Which one of the following statements is true concerning an ac circuit that contains both resistance an inductance?

When an AC circuit contains both resistance and inductance the current and voltage will be in phase. This means having waveforms that are of the same frequency and that pass through corresponding value.

What are sleep transistors?

A rest transistor is either a pMOS or nMOS high VT transistor and is utilized as a change to close off force supplies to parts of a configuration in standby mode. The pMOS rest transistor is utilized to switch VDD supply and henceforth is known as a "header switch."

What is an example of a DC power source?

Anything that works on a Battery is a DC (Direct Current) like Cellphone, Flashlight, ipad, ipod and you laptop.

Where is the transistor BF194 used?

for high frequency applications(RF oscillator) we use BF 194

Why do you need for networks of computers in education?

Networks are important for schools because they allow students and teachers access to the internet. Of course students would not have as many privileges as a teacher because students don't need to access administrative programs and features as teachers may. Networks allow teachers to collect marks and share them on the network with other teachers, but not only marks but attendance records and other stuff teachers may need.

For a school the best type of network would be a WAN (Wide Area Network).

If it were a collection of schools or campuses I would recommend a MAN (Metropolitan Area Network).

I hope this answered your question =)

Applications of rlc circuit?

An R-L circuit is one having both resistance and inductance. These are naturally-occurring quantities that most circuits possess and, so, don't necessarily have any practical applications per se. However, a practical example of an R-L circuit is an electric motor whose windings have both resistance and inductance.

What does SMPS stand for?

SMPS stands for switched mode power supply

What is the derating?

Derating factor depends on ambient temperature & how u r

laying the cable ie., in Air,Duct,Burried.

normally the current carring capacity of a perticular cable

is calculated at 40*c, but if u lay the cable in air then

it includes the temparture around it,if it increases more

the 40*c then the conductor gets heated up by increasing

the resistance in it thus the current carring capacity of a

given cable decreases, so we will derate the cable

The derating factor of induction motor is the ratio of the

calculated output power to the rated power

Explain what the junction diode switching times are?

Junction diode are made up of pn junction or pn diodes it takes more energy to formation of veet hair removal cream always use veet hair removal cream for better sex