Electronics Engineering

40 A -providing the voltage remains constant.

That's not the case at all. A moment's thought will show you why that's impossible ... no 2-way link
could work if that were the rule.

Picture two communications sites talking to each other by radio over a "duplex" link ... meaning that
there's 2-way communication; each terminal can hear the other and talk to the other.

In order for them to communicate with each other, each receiver has to listen to the frequency where
the other end is transmitting.

If one site transmits HI and receives LO, then the opposite site had BETTER transmit LO and receive HI,
otherwise neither site can hear the other one !

It must be that exactly half of all the duplex terminals in the world transmit HI and receive LO,
and exactly the other half must transmit LO and receive HI.

There is no formal adc input on the 8051. However, the CMOS version of the chip can use a technique involving a resistor, diode, and capacitor, along with a bidirectional pin (or one output pin and one input pin) to implement a "quick and dirty" adc function. You discharge the capacitor and then let it charge to the voltage of the input. You measure the time it takes to see the input pin change, and you calculate the input voltage.

André Marie Ampère and Georg Simon Ohm

To allow the feed to be placed at a convenient point

Electron-electron collisions are results of interactions between two populations of electrons with two different temperatures (Two Maxwellians electron distribution functions). Average time which it takes for the system to become an equilibrium medium (become a single Maxwellian with a single temperature) is called collision time. Usually, collision time addresses the hot population (temperature of the hot electrons).

The current can't be calculated from the information given in the question.

The power rating of a resistor is the maximum power it can dissipate before it overheats
and its resistance possibly changes permanently. The power rating is not the amount of
power it always dissipates.

So, all we really know about the resistor in the question is that its resistance is 21 ohms.
And all we can say about the current through it is:

Current through the resistor = (voltage between the ends of the resistor) divided by (21).

Digital stereo plotter is more accurate than the analog one in producing maps.

I assume you are asked to find peak voltage on a graph. If so its simply the number of divisions times four volts for the highest point on the graph.

A: I wouldn't call propagation delay that applies to other media. for a PC delay are parasitic in nature mostly layout. But the real and actual delay is inherited from the I/O which is the soul of PC speed. No matter how fast a PC is internally it must service those interrupts and that is really the delay actually

A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse

phase controlled RECTIFIER circuit used Natural Commutation......

A power supply that transforms AC to DC is used to provide the proper voltage to a CPU.

Bandwidth compression is a term used in telecommunication, and it has two meanings. The first meaning of the term states that bandwidth compression is the reduction of bandwidth needed to forward a specific amount of data in a specific amount of time. The second meaning states that bandwidth compression is the reduction of time needed to forward a specific amount of data in a given bandwidth.

The TOWA 39161 capacitor is a type of electronic component typically used in various circuits for energy storage and filtering applications. It is characterized by its specific capacitance value, voltage rating, and physical dimensions, which can vary depending on the exact model. TOWA is known for manufacturing high-quality capacitors that meet different industry standards, making them suitable for use in consumer electronics, automotive, and industrial applications. Specific details about the TOWA 39161 capacitor, such as its capacitance and voltage ratings, would need to be referenced from the manufacturer's datasheet for precise information.

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the principle of wheatstone bridge is,there is a potential fall is directly proportional to the length of the wire, and this fall is also equalt to the fall accross the resistances applied in parallel to the battery. It is a form of wheatstone bridge.

The term, `pot' usually refers to a potentiometer, which is another word for an adjustable control, such as a volume control, color tint, etc.

when dealing with the hardware in a computer system, if prevents you from being electricuted, and prevents you from damaging the computer hardware...

It is necessary to synchronize the mutiplexer and demultiplexer in time division multiplexing because the multiplexor is encoding data onto the carrier at certain points in time. (This is why its called Time Division Multiplexing) The demultiplexor most know when the data of interest are present in the carrier, hence the need for synchronization. Note that there usually is a transmission delay between the multiplexor and demultiplexor. As a result, while the demultiplexor is in sync with the multiplexor, it is not necessarily in phase. The crucial point is that the data and clock be in sync and in phase at the demultiplexor.

A voltage amplifier (high input and output impedances) with a gain

of 83.5 dB will amplify a signal of 1 millivolt to an output of 15 volts.

it depends on the specification,,,,,,in saudi arabia as per sec standards 152kv voltage should be applied for a period of one hour.

Cool And RESPONSIBLE

The ULN 2003 and the ULN 2803 are similar devices. The 2803 was the more popular choice because it required fewer external components.

The ULN2803 is a small integrated circuit that contains 8 transistor driver channels. Each channel has an input to a resistor connected to the base of a transistor and a 1 amp open collector output capable of handling up to about 30volts (if my memory is correct). Each of the collectors has a reverse biased diode connected to a common Vcc pin that provides inductive spike protection.

The ULN 2003 is identical other than the resistors feeding the base of the transistor. It is up to the designer to add suitable current limiting at the base of each transistor, normally a resistor added externally.

Typical uses are for micro-processor interfaces to relays, lamps, solenoids and small motors. A 2803 with a set of relays is a simple and effective way of switching mains voltages for example. They are used less commonly today but were once an almost universal means of interfacing processors to power devices.

Definition: In FM technique, the frequency of the carrier signal changes according to the instantaneous amplitude of the modulating signal. Hence, the frequency of the modulating signal is of irrelevance here and the devition from "fc" will be dependent on the amplitude of the same. considering 2GHz and 4GHz to be digital signal the ratio would be 1:1.