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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
Yes, only relative motion between the coil and the magnetic field is important.
What charging current will be optimum for Ni-Mh 1.2v 800mah battery?
I have designed many charging circuits and generally we try to keep the max recharging rate of around 10% of the battery's discharge rating. For your Nickel-Metal-Hydride (Ni-Mh) battery that would be a maximum of 80 to 100 Ma.
What is the current value of a Winchester 94-32ws- sn 1175128?
Your gun was manufactured in 1941.
If its a rifle:
Exc V.G. Good Fair Poor
$3000 2000 750 500 200 If its a saddle ring carbine
3000 2000 600 400 200 If no saddle ring, deduct 35%
Draw and explain the UJT characteristics?
The Unijunction emitter current vs voltage characteristic curve figure(a) shows that as VE increases, current IE increases up IP at the peak point. Beyond the peak point, current increases as voltage decreases in the negative resistance region. The voltage reaches a minimum at the valley point. The resistance of RB1, the saturation resistance is lowest at the valley point.
Ip and Iv, are datasheet parameters; For a 2n2647, IPpand IVvare 2µA and 4mA, respectively. Vp is the voltage drop across RB1 plus a 0.7V diode drop; see Figure (b). Vv is estimated to be approximately 10% of VBB.
Is PCM is an example of analog to digital?
No, Pulse Code Modulation is a communication method used to carry digital data but is not part of any analog to digital conversion.
PCM is often used to carry audio data as a digital stream and therefore is the encoding used as the signal is first converted to a digital format.
The sorter separates the coins using different size holes. Then it measures the height of the stack, either with weight or light. A vending machine works in the same way, where the coin is sized and weighed mechanically, and using a microprocessor (a chip that performs the bulk of the processing and controls the parts of a system)to add up the total. Giving change is simple too, sending voltages to a solenoid (a coil of wire around an iron core) to discharge the coins that the software directs.
It would be interesting to note however that we could use coins of different currencies.
What is current value after derating factor considered?
Once derating factor is considered the size of cable for perticular electrical load increased by the multipling factor.i,e if 2.5MM2 cable is capable to carry 14amp. of current in general then with 40% of derating fator it can carry only 8.4amp.
In OC test , the equipments are connected in LV side since we need to get rated voltage . if it is cinnected in HV side the value of voltage will be less and current wil be more.Hence the ordinary instruments cannot measure this value of current
Ohm's law states that the current in a circuit is inversely proportional to the circuit resistance. There is a single path for current in a series circuit. The amount of current is determined by the total resistance of the circuit and the applied voltage.
If the switch, light bulb, and source are all connected in series and the switch is ideal (has no resistance), then the switch acts as a short. There is no potential difference across the short.
What do you mean by common emmiter configuration?
In whch emitter is cmmön.input is taken frm base nd output is obtaind acros collector.
How is voltage loss overcome between the power station and consumer?
because the voltage decreases through the wind, and doesnt allow it to get through to the consumer
+++
Nothing to do with the wind - apart from physical damage of course!
The losses in the line are due to low but definite electrical resistance within the cable, and inductive losses within the transformers. So the main transmission lines work at very high voltages to reduce the current hence resistance loss, and the voltage is transformed down to industrial and domestic levels close to users.
//you tell us and we'll both know
assuming that you have used h-parameter analysis for this ...Vb contains the Ib and the Ie terms which can be expressed ad Ie=(1+Hfe)Ib
then we have
Vb=Hie*Ib + Re*Ie
=Hie*Ib + Re(1+Hfe)Ib
=Ib(Hie+(1+Hfe) Re)
then we can find
Ri as Vb/Ib= Hie+(1+Hfe)*Re
hope that helps....
Briefly explain 'h-parameter model' for BJTs?
h-parameter used to find the input and output impedence of the two port network. suppose if u connect a high load at the output port then u should take care that no current from the device will attack the network, to determine that we should know what is the impedance of the circuit.
What is the resistance for an open circuit?
There is no fixed resistance for a "closed circuit." I get the feeling you are asking about a security system and are not giving us all the details. == Certainly it's only zero in theoretical circuits. In real life, it's a "low" or "minimal" resistance.
How do you calculate maximum surge current?
this is below the point where components are destroyed
the easy way is to submit a couple dozen samples to ul laboratories
they have equipment that simulates the surge currents
they merely destroy a dozen see what the current was to destroy them
then average it deduct 10% and see if the remaining samples arent destroyed
What are the largest selling types of memory integrated circuits?
The two largest selling types of memory integrated circuits are DRAMs and SRAMs.
Samsung has very good customer service. Call customer service and ask them what is wrong w the TV.
Why are 2 batteries needed for biasing a transistor?
They aren't, it can and is done just fine with one.
