answersLogoWhite

0

📱

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

Why HLT instruction is not needed for microcontrollers?

There should be some process to stop the execution of a program.In microcontroller it is done by jumping to same location.

Do the induced voltage increase in a transformer when the magnetic field strength increase?

Yes, the more voltage you put in the more you get out. If the transformer is a 2 - 1 ratio and you put 240 in you get 120 out and when you put 480 in you get 240 out. Magnetic field strength and voltage have a direct relationship.

+++

The field strength is actually a function of current, although as you say, increasing the voltage will increase the current hence the magnetic field.

What is the resistance in ohms of 400 siemens?

25 ohms

Answer

Resistance is measured in ohms. Conductance is measured in siemens. Conductance is the reciprocal of resistance. So the ohmic equivalent of 400 siemens is 2.5 milliohms.

Difference between industrial and commercial operation conditions?

The term industrial generally pertains to operations involving manufacturing or repair. The term Commercial is much broader, and may include operations such as retail, office, warehouse, etc.

From where we can do Training in Mobile communication after BE to get a job in telecom sector?

N Tech training center, one of the best training institutes in orissa, a part of NM wireless communications provides a complete training and placement assistance in telecom sector.

What is total impedance of a circuit when the resistance is 15k ohms and the capacitive reactance is 10k ohms?

You can write this as a complex number; the resistance is the real part, the reactance is the imaginary part (negative, for a capacitive reactance): 15 + j10 kilohms. ("j" is used instead of "i", to avoid confusion with current, which is symbolized by "i".) This is in rectangular coordinates; with a scientific calculator you can use rectangular --> polar conversion, to get the absolute value and the angle. To get just the absolute value, use Pythagoras' Theorem, which in this case gives about 18 kilohms.

You can write this as a complex number; the resistance is the real part, the reactance is the imaginary part (negative, for a capacitive reactance): 15 + j10 kilohms. ("j" is used instead of "i", to avoid confusion with current, which is symbolized by "i".) This is in rectangular coordinates; with a scientific calculator you can use rectangular --> polar conversion, to get the absolute value and the angle. To get just the absolute value, use Pythagoras' Theorem, which in this case gives about 18 kilohms.

You can write this as a complex number; the resistance is the real part, the reactance is the imaginary part (negative, for a capacitive reactance): 15 + j10 kilohms. ("j" is used instead of "i", to avoid confusion with current, which is symbolized by "i".) This is in rectangular coordinates; with a scientific calculator you can use rectangular --> polar conversion, to get the absolute value and the angle. To get just the absolute value, use Pythagoras' Theorem, which in this case gives about 18 kilohms.

You can write this as a complex number; the resistance is the real part, the reactance is the imaginary part (negative, for a capacitive reactance): 15 + j10 kilohms. ("j" is used instead of "i", to avoid confusion with current, which is symbolized by "i".) This is in rectangular coordinates; with a scientific calculator you can use rectangular --> polar conversion, to get the absolute value and the angle. To get just the absolute value, use Pythagoras' Theorem, which in this case gives about 18 kilohms.

What is nonlinear modulation?

nonlinear device modulation is a process which imparts to sinusoidal two or more amplitude levels.

How can tap changer be used to coordinate voltage control?

Tap changing is the ability available in many power transformers to control the voltage.

How it works:: As we know the energy conservation for transformers V1*I1=V2*I2 [1 is primary side and 2 is secondary]..So suppose your system requirement is 220VAC transformer output and incoming voltage is 415VAC [Tapped input with appx +-10% ,400-415-440],then in case of low output voltage or higher output voltage [lesser than or greater than 220Vac] can be rectified by changing the input side taps only [By increasing and decreasing the input tap setting as said above].

Essentially what is being done is a few turns are being added or removed from one winding, which results in a different ratio N1/N2, resulting in different secondary voltage vs. primary voltage.

This can be used to coordinate voltage control by having the LTC operate prior to automatic cap banks on the bulk electric system, and prior to power plants modifying their output. transformers should be tapped slower than the local lower voltage cap banks. Basically, the lowest voltage voltage regulation equipment should begin tapping (as a general rule) or turning on. If these cannot fix the problem, the higher voltage equipment will kick in.

Which type of material that allows electricity to flow but not as freely?

Note that "electricity" doesn't flow, only current does, which is one aspect of electricity, does. Current is the flow of electrons.

Good conductors are metals, such as copper or aluminum.

Materials that allow the flow of electrons, but not as freely as good conductors are known as semiconductors. These are primarily silicon or germanium, that is "doped" with specific types of impurities to allow their current to be better controlled by the application of a voltage. Heat will also increase the flow of electrons in a semiconductor.

12volt landscape lighting is this ac or dc?

This is DC, you need to talk to someone who knows what they are doing,unless

you get a kit that has everything already to go. Because everything must be matched

from the lights, wire, distance, how many, transformer. Lowes has a few ok kits.

If you where looking at say seagull or hinkley, lighting, which are not kits and are expensive, the system must be designed, and your looking at 300.00-600.00

just for a transformer.

I install custom outdoor landscape lighting.

DC is a very safe way to go,, over hard wired lighting for landscaping.

What is a devider?

It's something that cuts another thing in half like a knife it's one of the dividers in the world there are a whole lot more any thing that cuts the thing you want to cut in half then it's a divider:)

What does OA stand for in OA 79 germanium diode?

It is not "OA 79" it is "0A79", that is the digit zero not the letter "O".

The designation of 0A79 is inherited from old designation system for Vacuum Tubes.

  • 0 - 0V heater/filament or no heater/filament meaning a Cold Cathode device
  • A - Low Current Diode
  • 79 - an arbitrary unique number identifying the specific device type, in this case a solid state germanium diode not a vacuum diode or gas diode

What is 4-20ma in PLC?

4-20ma is a type of signal transmission.

  • A process value, such as pressure, RPM, or whatever, is converted into a current in the range of 4ma to 20ma and sent out on a twisted pair cable.
  • The receiver passes the current through a resistor, converting it back to voltage, and processes it accordingly. If that resistor were 250 ohms, the voltage would be 1-5v.
  • An offset of 4ma is used so that the receiver can detect an open connection.
  • The ground or power reference is usually maintained at the transmitter, but sometimes it is at the receiver.
  • A twisted pair cable is used so that the effect of common mode noise is minimized.
  • The receiver is usually an opamp so that the effect of common mode voltage is minimized.