Electrical Engineering

14 AWG copper conductors are limited in the NEC to 15 amps. You must protect them with an overcurrent device such as a breaker or fuse not exceeding 15 amps.

The voltage drop along the slide wire of potentiometer can be controlled by adjusting the value of working current. The process of adjusting the working current so as to match the voltage drop across the portion of sliding wire against standard reference source is known as standardisation

0.0947

Well as you said, it is self explanatory. The current density should not be more than 1000 A per square inch roughly coming to about 1.6 Ampere per square mm. Consider the case when the current density is high i.e. it could be high because of either reduced area with same current OR with more current through same area. Any of this case would lead to increase in the thermal lossess which could eventually lead to thermal runaway without the temperature rise getting stabilized (Stability being defined as temperature rise not exceeding 1 deg C per hour).

Rgds,

Fency Anthony, ABB Limited, India

Increases

3 phase cable is transposed to minimize the effect of leakage/capacitance current.

Voltage stabilizers are the circuits that are used to filter noise from the source voltage. DC voltage generated from a bridge network or diode network will contains voltage glitches. These glitches may cause serious problems to the operation of digital circuits. So a voltage regulator is used to filter these glitches. voltage stabilizer can be built using a voltage regulator ICs like 7805 for +5V, 7809 for +9V, 7905 for -5V, 7909 for -9V and so on.

this is a method to fined the fault in the underground wires.In this method we replace two arm of the wheat stone bridge with the testing wire and the another wire and calculate them using relation R1/R3=R2/R4.

For all practical purposes NO. The only voltage measured will be the voltage drop of the contact itself. This should be very low if the contact is good.

The current supplied to the filament for heating is defined as the Filament current.

whereas

When the filament is heated to a high temperature, the electrons are emitted. The flow of electrons form Cathode to anode is the tube Current.

To make a full subtractor, you need an XOR and a NAND gate.

depends on your load...

when a capacitor reaches it, it acts as a battery

There is none, glass is much stronger, but i suppose it depends on the use.

A choke coil is an inductor, which is designed to block a particular frequency in an electrical circuit while passing signals of very less frequency or direct current.

24.8 Volts

The impedance of a centre fed dipole at resonance is about 73 ohms. The feed impedance of a folded dipole is four times that, 292 ohms. The feedpoint is of course balanced in both cases, thus 300 ohm balanced line is an excellent match for the folded dipole active element of a commercial TV antenna.

A shading coil induces currents to create an additional electrical phase. The coil pauses slightly to control magnetic flux. Delaying magnetic flux allows for a secondary rotating magnetic field to build.

The term "electric lamp" is a general one. It refers to a slice of technology that produces light from electricity, and how it does this can vary. The two basic types of lamp are the incandescent type and the fluorescent type. There are other types, like a light emitting diode type, which is solid state kind, and a carbon arc lamp, but we usually use the term for the two common types mentioned. Sometimes we use the term to include the whole fixture. A table lamp might be referred to as an electric lamp in some cases. But as regards the "regular" usage, the lamp will work in one of two ways. In one, a resistive element which will heated by the electric current to the point of incandescence, where it will emit light. The filament gets really hot and glows, and you already know that this describes the incandescent lamp. In the fluorescent lamp, a gas-filled tube it electrified and the gas is ionized with the subsequent emission of light. This is the fluorescent lamp, and many of them are set up with secondary emission characteristics to increase and/or change the spectrum of light emitted. Use the link below to go to the Wikipedia post on the electric lamp. You'll be well informed if you surf on over and skim it.

500 MW Boiler is sub-critical Boiler which generates steam at pressure lower than the critical pressure ie below 221.2 kg/sqcm. where as the 660 MW boiler is super critical boiler which operates steam pressure above critical pressure.

generator lockout relay is a relay that the output of other relays energize this relay and its out put use for tripping of generator. this relay must be reset manually