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
An example of a voltage source is a?
battery
A generator
electrical outlet
solar panel
wind turbine
or any source a voltage can be obtained.
What is the time constant of a 20mH inductor in series with a 230 ohm resistor?
Simple...(20*10-3)/230=869 microseconds
Why do guitar rockers choose tube amplifiers instead of transistor amplifiers?
A: TUBE AMPLIFIERS are operating at higher voltage which makes the dynamics of amplitudes more desirable. Other then that there is no other reason. tube amplifiers are bulky heat generating components efficiency poor and frequency limited.
What type of welding which do not require a molten electrode?
TIG welding electrodes do not melt under most applications. Electrode means it carries electrical current. In MIG welding the wire becomes the electrode. In TIG and Gas Welding the filler material is called a rod. Stick welding uses rods called electrodes.
Does Panasonic make a Blu-ray player?
Yes, Panasonic does make blu ray players. Several, in fact. Panasonic is one of the top brands for blu ray players, alongside Sony, Samsung, Sharp, and Pioneer.
In a transformer primary or secondary will inside winding?
A step-down transformer's primary is high voltage and secondary is low voltage, based on voltage configuration or load we select which winding we do fast.
In air-cooled Transformers output voltage is high and load current is low. So in air cooled low voltage winding in side and high voltage winding in out side of the coil . So we can reduce high voltage short problems and we can easily provide coil insulation . reduce short problem. It is cooled in oil.
In step-down transformers we can do high voltage inside of the coil and low voltage and high current of the coil is outside. Because we can better coled in outer side . and reduced to temp problems.
AnswerThe terms 'primary' and 'secondary' do not relate to a transformer's voltages, but to how its windings are connected. The primary winding is connected to the supply and the secondary winding is connected to the load. So, for a step-up transformer, the secondary winding is the higher-voltage winding while, for a step-down transformer, the secondary winding is the lower-voltage winding.Your question, therefore, should ask whether the higher- or the lower-voltage winding is the 'inside' winding (i.e. the winding closest to the core), and the answer is that it is the lower-voltage windings are innermost and the higher-voltage windings that are outermost.
Can you use an extra stereo receiver for an amplifier?
If it has auxiliary inputs, such as a line level input, then yes, it should be able to serve as an amplifier. Be warned though that it probably won't work well as a guitar / instrument amplifier.
Why instrumental amplifiers have high CMRR?
That way they can filter noise (assumed to be common on both input terminals) and extract the signal even if it's relatively weak.
They are horizontal polarization, vertical polarization, and circular polarization. Use the link below on antenna theory and see some examples and gather more information.
Basically, polarization describes how the E-field is moving when it leaves the antenna.
In horizontal polarization the signal moves in a horizontal fashion (-).
In vertical polarization the signal moves in a vertical fashion (|).
In circular polarization the signal moves in a circular fashion (O) with either left-handed or right-handed rotation.
Now, when you want to talk to someone using horizontal or vertical polarization you want to match their angle of polarization exactly for the strongest signal.
Cross-polarization is radiation orthogonal to the desired polarization. For instance, the cross-polarization of a vertically polarized antenna is the horizontally polarized fields.
This is important to know because when you are setting up something like a satellite connection. In order to allow more signals through the satellite transponder within a fixed bandwidth and with decreased interference, the satellite makers alternate the polarization between adjacent transponder channels. (-|-|-|-|-|-|). Two adjacent channels can be "shoved right up against each other" and will interfere in a minimal way if they are polarized oppositely. Since interference affects their customers, satellite vendors are very touchy about proper polarization, and monitor gaps, called "guard bands" to ensure that you are properly aligned.
What refers to the tendency of oil to resist flowing?
Oil viscosity depends on it's temperature. The higher the oil temperature is, leads to higher viscosity and low flow resistance. Cold oil temperature leads to lower viscosity and higher flow resistance
1). You don't need the voltage 'E' in order to calculate the total resistance. The total
resistance is the same whether the circuit is connected to a big battery, to a small
battery, to a bicycle pump, or lying in the back of the desk drawer.
2). In a series circuit, the total resistance is just the sum of the individual resistances.
In this example, the total resistance is
R1 + R2 + R3 = 100 + 500 + 600 = 1,200 ohms .
What were third generation computers used for?
The same kinds of things as earlier first and second generation computers had been used for, but their smaller size and typically lower cost permitted them to enter more markets finding applications where portability was critical.
The thyristor functions in such a way that when the anode voltage is greater than the cathode voltage , it is not triggered but only triggers when a gate signal is applied at the gate of the device.
What is the revised salary of a tta in bsnl?
1. Basic salary is 13600( with 3% increment every year. up to 25420)
2. DA is 43% (as on 1-1-2011)
3. HRA 10/20/30% depending up on where they getting postings.
4. plus allowances like Rural, Medical, Special pay, Skill up gradation allowance, Travelling Allowance.
This is gross salary. (Around 22000 with 10% HRA)
And the deductions
1. EPF
2. GSLIS
3. Professional tax - 200 Rs
4. Income tax
5. Ben F - (Around 10 Rs)
and any insurance of the employee which is to be deducted from salary
Why does a fully charged capacitor show infinite resistance?
The voltage-current relationship for a capacitor is i = C dv/dt, where i is the current flowing through, C is the capacitance and dv/dt is the time rate change of the voltage across that capacitor. So, when a capacitor is fully charged, the voltage no longer changes with time (the derivative, dv/dt, is now 0). As can be seen from the equation, the current would therefore be 0. Anything with 0 current flowing through is an open circuit, and can be treated like a resistor with infinite resistance (in models, anyway). Practically speaking, capacitors aren't this perfect, but you will still have an extremely high resistance once fully charged (voltage changes negligibly after charging).
as far as i know ul in uln stands for universal linear and n indicates the temperature range
Which antenna is not wideband?
Electrically small antennas are always narrow-band. The bandwidth of a small antenna has a theoretical maximum defined by the Chu Limit.
Which of what instrument used to convert ac to DC?
We don't use an 'instrument' to covert a.c. to d.c.. Rather, we use a circuit called a 'rectifier'.
Can you use a 91ohm resistor in place of 100ohm resistor?
It depends on where you are going to use this resistor and what its application going to be. If the circuit you are using can tolerate this then you are fine.
Why do amplifiers have a low output impedance?
To get all the audio voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is at least ten times higher then the output impedance.
An input impedance is called also a load impedance or an external impedance.
An output impedance is called also a source impedance or an internal impedance.
What is a 1-dB compression point?
Devices, such as amplifiers can't be linear over all input values. At some point they just can't output the required output power. I.e. an amplifier that increases input power by a factor of 10, may not be able to amplify a signal that comes in that is, let's say 10 watts. The point where the device is outputing 1 dB less POWER (which is roughly running at 80%) than it should is the 1 dB compression point. So lets say a 10 watt signal is input, and that the signal should be amplified by a factor of 10, and should output 100 watts. Let's also say the system output power is actually 1 dB down from the expected value and outputting roughly 80 watts, 10 watts is the input 1 dB compression point. Also, look here: http://www.rfcafe.com/references/electrical/p1db.htm
Matrix applications in electronics and communication?
Matrices are mainly used in network analysis to solve problems based on mesh and nodal analysis.
Their applications are also used in network topology to solve problems based on tie set, cut set and incidence matrix.
Men can wear flip flops but usually don't wear them as much as women do as representing and making one sexy is not considered a part of the genderType your answer here...
