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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
An LED. (el-ee-dee)
You would put 'an' before the word LED because the letter L is pronounced with a leading vowel sound, as "EL". It is not a vowel that determines the usage, but the vowel sound. Similarly, the silent H in "hour" means that 1 hour is "an hour".
The reverse is found in words such "union", where the YOU sounds like a consonant, and you say "a union."
Sounded-out acronyms
When an acronym is sounded out as a word, rather than individual letters, then it can use the article matching the word sound, as with a NASA probe or a NORAD radar station.
What is the function a transducer?
Transducer is a device which converts one quantity in to another quantity........... Mostly we are using electrical transducers. That converts physical quantity in to electrical quantity.
Transducers enables us to measure the physical quantity. Also they are employed in the sensors too.
Something that will not let electricity flow through it?
Something that does not allow current to flow is called an insulator.
"Electricity" doesn't flow, only current, which is one aspect of electricity, does.
Note, current is the flow of electrons.
If voltage equals resistance x current then?
Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.
How do Impressed Current anodes work?
i dont know
use rectifier just invert ac to dc and supplied to anodes positive to steel negative
Which has greater resistance to transmission errors Binary signaling or Analog signaling?
digital signals (usually binary coded) can include extra information that can be used for error detection or even correction. this allows recovery of the original signal, either by requesting retransmission or by directly correcting the error.
analog signals can't include any extra information needed for this purpose. it is impossible to distinguish an error from the original data.
How can a technician identify a wire wound resistor that is color coded?
The same way he/she can identify a composite resistor that is color coded or a metal film resistor that is color coded: by reading the color code bands. They all use the same color code.
If for some reason the color bands are damaged and unreadable, the resistor will have to be removed and measured with a meter. However this reading may be incorrect as whatever caused the color bands to become unreadable may have also damaged the resistor, changing its value. Verify the value on the schematic!
Most household batteries don't provide enough voltage difference for you to feel. For example, holding a "C" cell battery with a finger on each terminal is only 1.5 volts, and your skin provides enough resistance so that no current will flow through your body.
If you moisten your finger and touch both terminals of a 9-volt battery, you may feel a little tingle in your finger.
DO NOT touch the terminals of a 12-volt car battery; you could be injured or killed. At the very least, it would knock you on your butt.
What is the difference between pir movement sensor and ir sensor?
Passive simply means that the unit does not emit IR light, but does detect it. All warm things emit some degree of IR. a PIR motion detector senses the difference between a warm body and the cold background.
Active IR emits IR light to illuminate an area to be "seen" with it's CCD that is sensitive to IR. Most new Sony camcorders use active IR for "night vision".
IR alone, with no modifier, simply refers to the spectrum of light known as Infra Red, which is slightly above human's vision range.
Is lithographic and offset printing the same?
yes, absolutely same... cuma offset lebih kepada proses pemindahan imej. manakala kaedah kerja cetakan tersebut dipanggil litografik (lithography)
Micro-Electro-Mechanical Systems (MEMS) is the integration of mechanical elements, sensors, actuators, and electronics on a common silicon substrate through microfabrication technology
Active Power is a company that designs and manufactures backup power systems. Power systems that can keep an operation running during outages or other issues are critical to production.
How does ohm's law works in a resistor circuit?
Ohm's law states that voltage is resistance times current. In a resistor circuit, knowing two of voltage, current, or resistance, you can calculate the third.
Actually, this applies to any circuit, be it resistor, capacitor, or inductor. Ohm's law still applies - it just gets more complex when the phase angle of current is not the same as the phase angle of voltage.
Why impedance matching are important in communication circuit?
to reduce reflection loss from the load
How can pulleys be used to increase the speed of a motor?
I dont think you can increase the speed of the motor but if the motor is driving some piece of rotating equipment (pump etc) the speed of the driven shaft can be increased up to the point where the motor reaches full load current.
For a series circuit such as this, simply add the resistances to get the equivalent resistance.
For a series circuit such as this, simply add the resistances to get the equivalent resistance.
For a series circuit such as this, simply add the resistances to get the equivalent resistance.
For a series circuit such as this, simply add the resistances to get the equivalent resistance.
From that list, I'll have to go with 'B'.
Two resistors in series, one 5 ohms and one 2 ohms, with a current of 5 amperes, will have a power dissipation of 175 watts.
Ohm's law: Voltage = current times resistance
E1 = I R1 = (5) (5) = 25 volts
E2 = I R2 = (5) (2) = 10 volts
Power law: Power = current times voltage
P1 = I E1 = (5) (25) = 125 watts
P2 = I E2 = (5) (10) = 50 watts
PT = P1 + P2 = 125 + 50 = 175 watts
Is stepper motor ac or dc motor?
neither. DC locks the rotor of a stepper stationary, pulses applied to a stepper's windings in one order advances it while in the opposite order reverses it. steppers typically have 4 to 6 windings.
What is the function of a repeater in terrestrial microwave transmission?
- Repeaters may be installed with each antenna to increase the distance served by terrestrial microwave.
- Repeaters received the signals and converted into transmittable form and pass it to the next antenna.
- Repeaters can broadcast the regenerated signal at its original frequency or at modified frequency depends on the system
divide the voltage by each resister individually then add the totals together.
1.5/6=.25
1.5/6=.25
.25+.25=.5 A
