Electrical Engineering

Decrease

E=Vt + Ia jXS

Where E excitation voltage

Vt Terminal voltage

Stator Current Ia

Xs synchronous Reactance

Slip rings are used in AC while split rings are used in DC generators

Alternating Current for highly inductive load i.e. motors...whereas AC21 is for resistive load....i.e. heating elements. this is what you called utilization category...

1st pin is emitter then collector and base

Intrinsic

The kilovolt indicator circuit I saw on the web uses resistors voltage divider with a neon lamp in parallel with each resistor of the low branch. It's not a very orthodox design. If you search electric fence tester on a browser by images you can look at the schematic. But beware, you must not connect this circuit for a long time ! It is better to use high voltage resistors (several kilovolts) with enough power. Be careful with high voltage because you don't need to touch a contact to be in danger, if you' re close enough a spark will jump the air gap. In a home 230v indicator, there is one resistor in serie with the neon bulb, the resistor value is calculated to have the difference between input high voltage and nominal voltage of the neon bulb. The voltage across a single neon bulb depends on the size of the bulb, in fact distance between the electrodes and parameters of the gas. For 2 chinese models I saw 16x6mm: 90volts, 12x5mm: 60volts for instance. You can buy the neon bulb with mounted resistor. It is not necessary to use neon bulb to measure high voltage: You can use a voltage divider and a digital voltmeter, it would be much more precise. If you want to test AC voltage, you can use a high voltage transformer but the wires must be insulated enough to withstand the high voltage.

just go to the city and ask for the copy. they must give it to you.

Some times on/off valves are to large to be actuated using one solenoid valve,but most of the on/off valves are being actuated using only one solenoid valve

Like anything in life....It all depends. The factors that determine the voltage at an outlet are generally two fold: 1) how far the outlet is from the mains entrance of a house and 2) how much power is being drawn on the circuit the outlet is on. Higher current(power) will reduce the voltage at the end of a circuit. Basic Ohms law.

108 volts does seem to be significantly lower than normal. Typical house voltages are 120 vac and with some drops allows it might be a few volts lower. It also depends on how far the transformer is from your house. It is possible that the transformer has a significant load on it(e.g. drawing more power than it is designed for) and that will have an effect on the final voltage. You should measure other outlets to see if they are similar in voltage. If so, it is most likely the supplier. Just one other thing to check is another meter. Could it be that your meter is faulty(e.g. needs a battery replaced)?

Also, it depends on the country that you are in. US voltages are typically 120 vac or 240 vac for general home use. Industrial use will generally be 277 vac and higher ranging up to 480 vac for mid sized installations. These are generally 3 phase versus single phase for home use. In some cases homes will use what is called 2 phase. In general all voltages delivered to homes are measured from "Neutral" to line. This translates into 120 vac. If there is a transformer that has 2 phase capability on the distribution pole they generally bring in another phase which is 180 degrees out of phase with the original 120 volts and thereby making it 240 volts phase to phase.

Europe(in general) uses 230 vac but last I heard is being standardized to 240 vac. Some countries, such as Japan use 100/200 vac as standard home voltages.

Use the general equation for resistance in parallel:

1/R = 1/R1 + 1/R2

Ac motor have slip ring, to remove the slip ring,connected to the commutator its a dc motor.

The loads are in series with the switch so the switch can turn them on and off.

The loads are in parallel with each other so they each get the same voltage when the switch is turned on. (Kirchoff's voltage law)

You would not want the loads in series with each other because they would then have half the voltage and one quarter the power that you probably intended. (Assuming consistent impedance)

If you had the switch in parallel, and opened(turned off) the switch, there would still be a current along the whole circuit (except that which is in series with the switch)

i also do know the answer

the diode is forward bias

ANSWER: A bypass diode is used to bypass circuitry as soon as the diode is forward bias by 0.6 volts The use it to bypass to prevent damage to the circuitry

The SPPA-T2000 (Siemens-Power Plant Automation T2000) system is still being developed and supported but there is a new control system with more advanced and modern features, it is called SPPA-T3000.

Since resistance is inversely proportional to the cross-sectional area of a wire, thicker the wire - lesser the resistance and vice-versa.

Now, according to Joule's law of heating,

H = I^2 R t; i.e. H (Heat) is directly proportional to the square of I (Current), R(Resistance) and t (time).

Whereas, according to Ohm's law,

V=IR; i.e. V (Potential difference) is directly proportional to I (Current) and R (Resistance)

Comparing both the formulas, we can conclude that H (Heat) needs more Current; I. [H=I^2 R t] Therefore, thicker wire.

Hence, the cooker needs a thicker wire while a table light needs a comparatively thinner wire.

A three point starter is a device that is meant to help start a DC motor. A three point starter will start device without much starting current.

10amp

There is a method called dot convention which is used in transformers. the dot shows the direction of current flowing through the coil and whether the value of mutual inductance thus produced will be positive or negative.

26 lb thrust

6

combined potential and kinetic energy (:
mass and velocity