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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

How do you convert dependent current source into independent current source?

There is no simple, straight forward, one-fits-all formula. There is a method, however-creating a thevanin equivalent circuit with one resistive element and your voltage source, you can convert this to a current source (I = V / R).

What is r parameter of a transistor?

it is real parameter.it calculate output by appling KVL and KCL by finding loop current.

How do you turn off a series circuit?

Unscrew any one, and they will all go out. Its a series circuit, so Kirchoff's voltage law says that the sum of the voltage drops around the circuit must add up to zero. The open point is infinity ohms, so the voltage across that open point is equal to the source voltage, (Ohm's Law: Volts = Amps * Ohms), and the voltage across the relatively small ohms of each bulb must be zero. Zero volts = zero amps = zero power.

How do you measure the resistance in a parallel circuit?

You have to measure the voltage, and the current. The resistance is then calculated by using Ohm's Law.

What is the difference between periodic and aperiodic signals?

A signal which repeats itself after a specific interval of time is called periodic signal. A signal which does not repeat itself after a specific interval of time is called aperiodic signal.
A signals that repeats its pattern over a period is called periodic signal,

A signal that does not repeats its pattern over a period is called aperiodic signal or non periodic.

Both the Analog and Digital can be periodic or aperiodic. but in data communication periodic analog sigals and aperiodic digital signals are used.

Can you use ac ammeter to measure dc current?

It depends. If it's an inductive ammeter (the kind that clamps around a wire), it won't work at all. If it is the type of ammeter that is actually placed in the circuit, it will work but it won't be accurate.

Comment

Actually, modern 'clamp on' ammeters WILL measure d.c. currents. It uses the Hall Effect to measure the current.

How do you size the circuit breaker feeding a soft starter for a 195A full load current induction motor?

Sizing circuit breakers for motors falls into a different category. Because of the inrush of current when the motor is in the stopped position, the breaker has to be sized to allow for this. Breakers usually are 250% of the nameplate full load amp rating. The wires that feed the motor are sized to 125% of the full load amps of the motor.

What is the temperature coefficient of resistance of Eureka?

  • For thin Eureka wire:
    Resistivity of the wire = ρ = R ×A/L
    = 9.28× 10^-5 Ω -m
    Conductivity of the wire 'σ' = 1/ ρ = 1.07× 10^4 (Ohm-m)-1

  • For thick Eureka wire:
    Resistivity of the wire = ρ = R ×A/L
    = 1.7 × 10^-4 Ω-m
    Conductivity of the wire 'σ' = 1/ ρ = 5.7 × 10^3 (Ω-m)-1

What are the basic characteristics of speech signal?

1)Nonuniform probability distribution of speech amplitude.

2)Nonzero autocorrelation between successive speech samples.

3)Nonflat nature of the speech spectra.

4)The most basic:speech is band limited.

Can a house be connected in series circuit?

The breaker panel. Breakers are placed in series with all outlets.

What is the dimensional formula for current?

One way to calculate current is using ohms law; current equals voltage divided by resistance or: I=V/R Where I is current, V is voltage and R is resistance.

Is a potato an insulator?

Potato is also used for making batteries. So obviously, it is a good conductor.

How a transistor constructed?

They contructed using semiconducters and metals. BJT(Bipolar junction Transisters) type transisters made by semi conducters. Generally for FET (Field Effect Transisters) type sometimes they add some metals to get the expected output.

What are the two major concerns in electronic communications?

Usally Bugs & Hackers

Maybe Even Lag

The two major concern in electronic communication are transmission and reception.

What are the types of transducers?

Sound -> Electrical (microphones)

Force -> Electrical (Load Cells)

Kinetic -> Electrical (piezoelectric, generators)

Light -> Electrical (solar panels)

Thermal -> Electrical (thermocouple)

Electrical -> Kinetic (Motors)

Electrical -> Magnetic (electromagnets)

Electrical -> Optical (lightbulbs, LEDs)

Electrical -> Thermal (heaters)

Electrical -> Audio (speakers)

*(see the related link below for more information)
A device that converts variations in a physical quantity, such as pressure or brightness, into an electrical signal, or vice versa.