The discharge circuit of the reactance coil E is now through the arc A'B instead of through its former circuit.
Following the direction of the arrow still further, the current passes through the battery J, through one-half of the main reactance coil E, and back to the negative terminal G of the transformer.
Consequently the arc A'B is now supplied with current, partly from the transformer, and partly from the reactance coil E.
B and E and connect stud A to terminal F on the external reactance box.
It has two dial switches with many taps to the resistance and reactance in the box so that it can be adjusted to compensate accurately for line losses with loads of varying power factor.
In practice, this is accomplished by the use of self-induction coils which are commonly known as reactance coils.
The elimination of all magnetic material from the construction of the concrete core reactance permits of no saturation, and assures a straight line voltage characteristic at all current loads.
The reactance and resistance are both so wound that any proportion of the winding can be cut in or out of the voltmeter circuit.
An extension at each end of the core provides for clamping and bracing the reactance in installation.
In order to avoid the prohibitive expense of high voltage insulation, the reactance coil is designed for the low tension circuit.
To lessen the possibility of a short circuit occurring between the reactanceand the alternator.
The various letters referred to~ in the diagrams will be found marked on the ends of the instrument studs and back of reactance coil box.
This may be regarded as one of the advantages of alternating over direct current, for, by introducing reactance into a circuit, the current may be cut down with comparatively little loss of energy.
Graphical method of obtaining the impressed pressure in circuits containing resistance and inductance, having given the ohmic drop, and reactance drop due to inductance.
The resultant reactance is BC' and being above the horizontal line AB shows that inductance reactance is in excess of capacity reactance by the amount BC'.
In the diagram it should be noted that the active pressure is called the ohmic drop, and the capacity pressure, the reactance drop.
In a certain circuit the resistance is 4 ohms, and the reactance 3 ohms.
If an alternating current of 8 amperes with frequency 60 be flowing in the circuit, what is the ohmic drop, the reactance drop, and the impressed pressure?
Does the power factor apply to capacity reactance in the same way as to inductance reactance?
To avoid this condition, reactance is introduced into the circuit, which causes an elongation of current waves so that they overlap before reaching the zero value.
If the alternating current wave could be rectified without the use of the reactance coil, the direct current produced would consist of a series of impulses which would rise and fall from the zero line as illustrated in fig.
The smoothing out effect of the reactance is shown in fig.
The direct current reactance is mounted on the base of the transformer and enclosed in the same casing.
The controller is designed to give speed reduction and speed increase as resistance or reactance is inserted in the energy and compensating circuits.
Since there is always a pressure on one of the three anodes in the right direction, a reactance coil is not necessary.
Explain the use of reactance coils in sub-stations.
The number of cycles per second, or the frequency, has a direct effect upon the inductance reactance in an alternating current circuit, as is plainly seen from the formula.
A leading current is set up which gives a rise of voltage in the reactance coil.
A lagging current is set up which causes a drop in the reactance coil.
Hence when a heavy current passes through the series coil of a compound wound converter and tends to produce a leading current, the reactance coil will balance it, and improve the power factor of the whole line.
This drop is due to two causes: 1, the resistance of the windings; and 2, the reactance or magnetic leakage of the windings.
By decreasing the resistances of the windings by employing conductors of greater cross section, or decreasing their reactance by dividing the coils into sections and closely interspersing those of the primary between those of the secondary.
If the frequency be zero, the reactance is infinite, i.
If the frequency be zero, the reactance is zero, i.
If the frequency be infinite, the reactance is zero, i.
The degree to which the current is opposed by the capacity is the reactance of that capacity for that frequency.
If the frequency be infinite, the reactance is infinite, i.
The degree in which any current is opposed by inductance is termed the reactance of that inductance.
Give formula for capacity reactance and the meaning of the symbols.
The pulsating direct currents are then passed through a filtering reactance coil, called a reactor, and one or more condensers, and these smooth them out until they approximate a continuous direct current.
A reactance coil used in the plate circuit of a wireless telephone to keep the direct current supply at a constant voltage.
A condenser also has a reactance effect on an alternating current but different from an induction coil the lower the frequency the greater will be the reactance.
The capacity reactance is the opposition offered to a current by a capacity.
The inductive reactance is the opposition offered to the current by an inductance coil.
These condensers are used in connection with the reactance coil to smooth out the pulsating direct current after it has passed through the rectifier tube.
A reactance coil for smoothing out the pulsating direct currents as they come from the rectifier.
Press down steadily on the new jar until its top is flush with the tops of the other jars.
The new jar should first be steamed to soften it somewhat.
If a Philadelphia battery with a double letter age code comes in, therefore, the foregoing table should be consulted in determining the age of the battery.
Then pour the rest of the compound back in compound vessel or kettle.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "reactance" in a variety of sentences. We hope that you will now be able to make sentences using this word.
