Electrical Engineering

A CPU works off of DC voltage. If you monitor the current draw of a CPU, it will likely not be DC, since a modern CPU is a CMOS design, current is only drawn when transistors are switched (ignoring the small leakage current). This is why overclocking (forcing the transistors to switch faster) can cause the CPU to overheat, and why "power save" mode on a laptop sometimes slows down the processor speed.

SCR's are mainly used in AC circuits. They could be used in DC circuits but they then would not be able to turn off. They require the zero crossing of the AC circuit to turn off. Then when positively biased they can be turned back on.

The same way, as you convert Appels to Carrots ...........

There is a formula: KVAr = KVA / KW or cos=KW/KVA > Yes, we are treating KW, KVA, & KVAr as the 3 sides in a 90 deg TRIANGLE !

KW= vertical katede

KVAr = horizontal katede

KVA = hypotenuse

Power available at shaft of pump

Ps = p x g x Q x h

where, p=density of fluid

g= gravitational acceleration

Q= discharge of fluid in m3/sec

h= differential head of pump

As the load increases on a motor the amperage rises. Increasing the load amps over the motors full load amp rating can shorten the motor's life because of excessive heat. Motors should have overload protection in their circuits to prevent this condition from happening by tripping the motor contactor and opening the motor's voltage supply.

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Gets very warm .... vibrations., possible melt, seize, much energy expended.

In vcd, input voltage controls the output current.e.g.jfet

In ccd , input current controls the output current. e.g. bjt

In the context of miniature circuit breakers (MCBs), "C 32" refers to the type and rating of the breaker. The "C" indicates a type of tripping characteristic suitable for circuits with moderate inrush currents, typically used for inductive loads, while "32" denotes the current rating of the MCB, which is 32 amps. This means the MCB is designed to protect a circuit with a maximum load of 32 amps and can trip under overload or short-circuit conditions.

The factor of 0.707 is used to convert the peak, or maximum voltage or current, into the corresponding root-mean-square (r.m.s.) value. it does not have anything to do with 'bandwidth'.

Supply Frequency in UAE is 50Hz

Reduce, Reuse, Recycle

A very high gain margin or phase margin produces stable feedback systems, however they may be sluggish in operation. If the gain margin is close to unity of the phase margin is close to zero, the system will be highly oscillatory and produce overshoots with large amplitudes that take a while to settle.

Having a gain of 6 dB or phase margin of 30 - 35 degrees will give you a relatively stable system. However there exists cases where this may not be so.

:-)

Since the transmission line has some real impedence (resistance) it will produce some voltage drop over a distance. During the peak hours the current going through the line is greater than non peak hours so the voltage drop increases proportunately (V=IR) and so you see a slightly lower voltage. This effect is best seen in remote areas at the end of the transmission line.

For a more extreme version that involves insufficient generation capabilities see brown out.

A resistor is a resistor. Plain and simple. By Ohm's Law, resistance in ohms is voltage in volts divided by current in amperes.

The difference lies in application, not in the resistor itself.

A normal resistor will introduce a voltage drop or current that makes some effect in the circuit, based on some design criteria. A bleeder resistor, on the other hand does not really affect the circuit - it is only there to "bleed off", or discharge, capacitors when the power is turned off. Consequently, a bleeder resistor will typically have a higher resistance than a normal resistor but, again, the issue is circuit design, not the resistor itself.

Some voltage must be present but the current causes the arcing.

Break down voltages happens at low voltages (.6 for silicon & .3 for germanium), whereas knee voltages at higher voltages. That's why its cheaper.

The circuit design process covers systems ranging from highly complex to simple. The design process for simple circuits can usually be completed by one person, while teams of designers may be required to complete the process for more complex circuits.

Yes so don't try it.

At a minimum, the main step up transformer for a generator should carry 105% of the full MW output of the generator.

in the open circuit test, the high voltage winding is open circuited and the measurements are made on the low winding side i.e, the open circuit test is performed on the L.V side. This is because if the measurements are made on HV side then voltage applied must be large and the current would be unsuitably small, for which the high voltage sources may not be readily available and at the same time the instrument ranges required should be very high, Also the result obtained may not be accurate.

NOTE: iron loss will be same, if measured from either of the winding.

in short circuit test. the low voltage winding is short circuited and the measurements are made on the high voltage winding side i,e,. the sort circuit test is performed on H.V side. This is because if the test is performed on the L.V side, the current will be suitably large for which the instruments used should be of very high ranges. moreover instruments of such high ranges and the auto-transformer capable of handling such high currents may not be readily available.

Six, Voltage is the same in a parallel circuit but current divides to total the sum of each branch. See Kirchoffs current law.

A: 1/7

Yes, a 3 wire system can create neutral voltages due to harmonic distortion. Neutral voltages can also be caused by load imbalance between the two hots.

It is normal for neutral to have a voltage differential relative to ground. Neutral is, after all, a current carrying conductor. In a well balanced system, however, there is little (theoretically zero) current in neutral.