Electronics Engineering

X ray waves are harmful if exposed frequently or for a long time because they penetrate into our body, in the process they cause damage to the cells in the body. This effect can also cause cancer.

I am assuming that you really want to use ammeters to measure power in a balanced 3 phase system. (hope you are not meaning 3 watt meter method)

Power in Watt in a three phase system is equal to 1.73 x line voltage x line current x power factor. You need to know line voltage, power factor also in addition to current to compute the power. If the system is balanced then actually you do not need to connect ammeters in all three lines. One ammeter reading will do.

A closed circuit with a power source and load.

No, nothing flows through an open circuit. If there are two flat plates on either side of the open circuit, facing each other, electric charge builds up on each plate until the plates are at the supply voltage.

If the voltage is AC, current will flow all the time as the voltage changes, because the flat plates form a capacitor that can pass AC. But there is no net power.

The signal that changes at a higher rate occupies greater bandwidth.

When resistors are connected in series in a circuit . the voltage drop across each resistor will be equal to its resistance, as V=IR, V is direct proportional to R.

An

A: The relationship is that the current will divide for each paths in a parallel circuit and the voltage drop across each will be the source voltage.

In a series circuit the current will remain the same for each component but the voltage will divide to reflect each different component value. And the sum of all of the voltage drops will add to the voltage source

if a diode is in forward biased the diode acts as switch is on and when we apply the diode in reverse biased then it work as the switch as off.

digital converter extracts samples of analog signal from input siganl

digital converter quantizes analog sample and assignes a binary numbervalue to it

digital coanverter encodes a quantized analog signal to transmit it across a digital network

That will vary depending on the size of the board, number of circuit layers in the board, number of drill holes needed, if the holes must be plated through or not, cutouts or nonrectangular shape of the board, quantity price breaks available, etc.

The main generator(s) are coupled mechanically to the steam turbines that take the steam output from the nuclear island, one generator per turbine so it is a close coupled combined unit. The generator produces AC electricity (60 Hz in North America, 50 Hz in Europe and most of the rest of the world) at an intermediate voltage level. The actual value will depend on the manufacturer but is usually in the range 10 to 20 KV (kilovolts). Some of this output will be fed back to power plant like the boiler feed pumps and the gas circulators in a gas cooled reactor, the bulk of it will be fed to a transformer which steps it up to the main transmission line voltage, 400 KV in the UK, and hence out to the distribution system.

RSeries = SummationI=1toN (RI)

Simple answer; add them up.

Interphase transformers are utilized as a part of frameworks that have two rectifier frameworks being utilized as a part of parallel. The requirement for the Interphase Transformer is available in light of the fact that when associating rectifiers in parallel, their immediate voltages vary.

mainly power consumption decreases in asynchronous chips they works based on time(i.e., when its term comes) but programming is of asynchronous chips are more difficult task because of we have to switch ON the chips one by one for that we have to determine the exact time that a single chip takes to complete its given instruction after completion we have to switch on the another chip.

while in the sych..chips single clock circulates entire system and all the chips should be in working state

It's a generator that creates 400hz AC signals, instead of 50 or 60hz. 400hz is often used on ships, because the equipment (generators, transformers) can be made much smaller.

importance of statistics in electrical engineering

Capacitors are measured in Farads or microfarads.

donor--arsenic, phosphorus, nitrogen

acceptor--boron, aluminum, gallium

Where you find wire insulation with ratings of 300 volts, 600 volts and 1000 volts, these are the highest allowable voltages that can be applied. A wire that is rated for 300 volts is good for 120 volts, 240 volts and 277 volts. At test research facilities, insulation on a wire is tested to destruction. The label that is given to wire's insulation, as a result of the tests, is the highest safest voltages that can be applied to that particular wire. So when you see a wire that has a label stating that it is rated for 300 volts it means that any voltage under and up to 300 volts is safe to apply.

One way to determine current is to measure it, with an ammeter. Another way is to calculate it using Ohm's law: current = voltage / resistance.

Intrinsic semiconductors have small conductivity at the room temperature.

and also if we raise the temperature to increase their conductivity then they will start acting merely like a conductor. and there will not be any control over the directions or the magnitude of the current flowing through it.

so by mixing the suitable impurity(dopant) we obtain the extrinsic semiconductor.

so that the conductivity as well as the control over the current can be increased.

Although intrinsic semiconductor are also somwhere used in electronics where i high resistance layers or a separation layers b/t two systems is needed.

like in PIN diode.

'Electricity' is not a quantity; it's the name of a subject area or topic (just like 'chemistry'). So 'current' describes a flow of charge (not 'electricity'), expressed in amperes. 'Voltage' (potential difference) is responsible for 'driving' current, expressed in volts. 'Resistance' is the circuit's opposition to current, expressed in ohms.

A circuit that has only a capacitor in it. Or the net reactance is below zero, making it capacitive. The current leads the voltage in a negative (capacitive) reactive circuit.

Yes.

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According to the SI units:

1 quadrillion = 1024

ten hundred trillion = 1000 x 1018 = 1021

Accordingly: They are not equal

The formula we need to use is called "Ohm's Law":

E = I x R

which can also be stated as:

R = E / I

or as:

I = E / R

where I = current (amps), E = potential difference (volts) and R = resistance (ohms),

"x" means "multiply by" and "/" means "divide by".

So, using the values stated in the question, the current I = 120 volts / 15 ohms = 8 amps.