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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
When using an ohmmeter what should be the results for an NPN transistor?
When the positive lead is at point "P" which is the base and the negative lead is at either of points "N" which is either the emitter or the collector, then the ohmmeter should have a very low reading or reads short circuit. Also, when the negative lead is at point "P" and the positive lead is at either points "N", then the ohmmeter should have an infinite reading when the meg ohm range.
How do you plot ohms law graph of potential difference versus current?
The current is represented by the horizontal (x) axis, and the potential difference is represented by the vertical (y) axis.
If the resulting graph is a straight line, then it confirms that the circuit is obeying Ohm's Law. If the resulting graph is a curve, then the circuit does not obey Ohm's Law.
The gradient at any point along of the resulting line represents the resistance of the load for that ratio of voltage to current.
What is transition frequency of a transistor?
The transition frequency of a transistor is the frequency in which the transistor will no longer provide any amplification or gain output. The frequency is out of the transistors's range.
What is breakdown voltage of diode?
The critical value of the voltage, at which the breakdown of a P-N junction diode occurs is called the breakdown voltage.The breakdown voltage depends on the width of the depletion region, which, in turn, depends on the doping level. The junction offers almost zero resistance at the breakdown point.
What is a 2N2369 transistor.
It's an npn switching transistor.
What is the sampler and mixer in current series feedback amplifier?
Here it is the current sampler and it is connected in series.
while the voltage mixer connected in series.
How do you calculate the over load and short circuits to use fuses?
By referring to the manufacturer's characteristic curves for the fuse. There are different curves for different types of fuse (e.g. rewirable, cartridge, etc.). Essentially, these curve will tell you how quickly the fuse will operate for any value of overload current.
What are the disadvantages of z source inverter?
1. more passive elements are required
2. input current ripple is high. Input current is not smooth
3. complex control algorithm
Is ohms law is applicable for transmission line?
Ohm's Law is applicable for transmission lines. It is applicable for every case of every circuit in every situation. That's what makes it a law.
The "complexity" is that 1.) resistance is not constant, it being a function of temperature and other factors, and 2.) for AC circuits, impedance makes the calculation complex.
AnswerOhm's Law is not a universal law, and applies in very few cases and, then, only to linear or ohmic devices. It certainly doesn't apply 'to every case, of every circuit, in every situation', and many physicists believe that it should not be classified as a 'law'.
If, on the other hand, you are referring to the equation, R = V/R (for d.c.) or R = V/Z (for a.c.) then, yes, these do apply to transmission lines. But you should be aware that these equations are not derived from Ohm's Law!
When temperature increases voltage across diode with constant current?
The voltage across a semiconductor diode (and across the base/emitter junction of a transistor) decreases as temperature increases: the actual figure is -2mV/°C.
How do you convert DC motor to dynamo?
take two dc motors..................... connect the spindle of 1 motor to a hollow pipe so that the pipe should also rotate when the motor is given dc current (one can take an empty pen refill for that).... now fix the spindle of another motor to the other end of the hollow pipe...... the two terminals of the 2nd motor is now the terminals of the dynamo which will generate dc current........
What are the advantages and disadvantages of instrumentation amplifier?
Advantages:
Even a small value of input voltage can be amplified using instrumentation amplifier.
Disadvantages:
For transmission purpose for long range, noise also gets superimposed along the original wave. Therefore specific cables are used to reduce noise.
What does the voltage across a inductor do?
voltage across inductor create a flux. because of variation current developes an opposite emf.
What is natural commutation of silicon controlled rectifier?
NATURAL COMMUTATION:
Commutation of current from one switching device to another in a power electronics converter at the instant the incoming voltage has a higher potential than that of the outgoing wave, without the aid of any commutation circuitry.
What are the applications of sinusoidal oscillator?
SInusoidal oscillators have a wide range of applications including usage in radios, televisions, communication systems, computers, industrial controlled applications, and laboratories. They work as as a function or signal generator.
What you measure voltage into?
You measure voltage using a voltmeter which involves measuring the electrical potential difference between 2 points in an electrical circuit.
What are the advantages of multidentate ligands over their unidentate counterparts?
multidentate ligands can be good chelating ligands compare to unidendate
multidentate ligands bring better stability to the central metal
What solid state componet can be used as a switch to turn current on or off?
The solid state component that can be used as a switch to turn current on or off is a thyristor.
A Zener card is one of a set of 25 cards which researchers use to test claims of extra-sensory perception or remote viewing.
to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver.
What are some transformation processes from inputs into outputs?
Facilities and staff are some transformation processes from inputs into outputs.
