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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
Is step signal is a DC signal?
A: while a step can be of both polarity but it is a level change and it is DC LEVELS
What is the difference between voltage and emf?
E.M.F: Is the potential difference between two terminals when there is no current i.e. circuit is open, therefore [EMF = OCV].
OCV :open circuit voltage.
Voltage: Is the potential difference between two terminals when there is current i.e. closed loop
AnswerAn e.m.f. (electromotive force) is a voltage or, more accurately, a potential difference ('voltage' is simply another word for 'potential difference'). However, it is the potential difference that appears across the terminals of a supply when it is not connected to its load. When the supply is connected to a load, this potential difference falls because of an internal voltage drop across the supply's internal resistance. So the simple answer is that an electromotive force is a supply's open-circuit terminal voltage.
Another definition is obtained from Kirchhoff's Voltage Law, from which we can say that an electromotive force is equal to the sum of all the all the voltage drops around the circuit, including its internal voltage drops.
What is the applied voltage on a circuit in which 5A is flowing and 10 w is generated?
- POWER, P=V*I
- if, P=10w,I=5A
- P=>10W = V * 5
- 10=5V
- V=2volts
What is it called when voltage is lost across a portion of a circuit?
This is often called a "voltage drop".
Which modulation scheme requires the least minimum bandwidth?
Suppressed carrier single sideband amplitude modulation - SCSSBAM.
One ohm.
Draw and explain the v-i characteristics of a p-n junction?
As you can't draw here, see link.
- In the forward bias voltage direction (right side) current slowly rises until the knee is at 0.7V in silicon diodes (0.2V in germanium diodes), then current rapidly rises. The forward biased V:I curve closely approximates an exponential function.
- In the reverse bias voltage direction (left side) current stays constant at near zero, until the breakdown voltage is reached then jumps to a high value.
Digital bandwidth refers to the capacity of a communication channel to transmit data over a given period. It is typically measured in bits per second (bps) and indicates how much information can be sent or received at once. Higher bandwidth allows for faster data transfer rates, enabling activities such as streaming videos, online gaming, and large file downloads with greater efficiency. Essentially, it determines the speed and quality of internet connections and other digital communications.
When checking the high pressure cutout switch with an ohm meter there should be continuity between?
terminals one and two
What is the meaning of true differential TDR?
can you give me the information about True differential TDR? Ples.
Your IF stages, normally three is a filter to give you better selectivity, it filters out all second channels and only let the preferred channel thru to your detector stage, the three stages is always tuned slightly off beat, in SW: 477KHz, 476KHz, 477KHz
What is the importance of De-emphasis network in FM receiver?
One characteristic of the FM process is that the noise is distributed such that it's lowest at the bottom frequency of the channel, and increases steadily as you move up the channel. Knowing this, pre- and de-emphasis is the clever trick we use to decrease the noise in the FM communications channel. Here's how it's done:
At the transmitter, pre-emphasis is applied to the baseband information before modulation ... the main channel L+R and L-R signals, plus any subcarriers that the station carries. Pre-emphasis is intentional distortion of the frequency response across the baseband that attenuates the low-frequency end, and progressively amplifies everything as you move up in frequency. The result of this operation is what actually gets transmitted.
The receiver is responsible for doing just the opposite. It applies de-emphasis immediately after demodulation ... it attenuates the high-frequency end of the baseband, and progressively amplifies everything as you move down in frequency.
If the pre- and de- are accurately matched, then the frequency response of the system winds up flat across the baseband, which is what we want. But ... by attenuating the higher frequencies, the receiver also changes the noise-content of the baseband, from a distribution that gets worse as you move up in frequency, to a distribution that's flat across the channel.
Change as time from low to high voltage and opposite
SIP means 'single in-line package', so it is a pack of several resistors, often with one end common.
How is Half wave rectifier experiment?
halfwave rectifier converts ac to pulsating dc.in half wave rectifier we use only one diode.during forward bias condition the circuit is open and hence conducts hence we get +ve half cycles where in reverse bias condition the circuit is open and hence doesn't conducts.
How a electric razor scooter works?
it should work has soon as u turn it on using the key... and u usually twist back the right or left handle back toward you to get it to work... _kristin_ <hope that helped you!!!!>
