Resistance circuit

To obtain this rotor current, the required rotor circuit resistance can be calculated as below for the various configurations of the rotor windings and the resistance units. It may be noted that, when the resistance configuration is not the same as that of the rotor, it must... [Pg.84]

Where, rotor resistance = R2 i/phase External resistance = Re i/phase Total rotor circuit resistance = fl2i i/phase... [Pg.84]

Step no. Total rotor circuit resistance R Q External resistance Rg 0 Resistance between steps Q ... [Pg.90]

In this case the regulating resistance grids arc normally continuous duty, unlike those for stail-up, which arc short-time duty. Equations (5.1 a-d) can be used, for determining the total rotor circuit resistance for a particular speed variation, i.e. [Pg.94]

For the 125 kW motor of Example 5.2, if a speed reduction is required by 50% at constant torque (see also Figure 6.51) and the rotor current is now 73% of its rated value (Table 5.3), then the total rotor circuit resistance... [Pg.94]

Rotor resistance ii/phase / e = External resistance il/phase / 2i = Total rotor resistance il/phase R = required rotor circuit resistance ssC2 = rotor standstill voltage /jt = required rotor current... [Pg.96]

Secondary terminal voltage for bar primary e, = 62 f i - Primary circuit resistance... [Pg.474]

Usually the annual variations in the specific resistance of the soil lead only to small changes in the current circuit resistance so that adjustment of the protection... [Pg.230]

Fig. 14-4 Circuit diagram for a low-resistance dc decoupling devices. (KE) insulated cable end sealing, (E) grounding installation, (1) resistance ( 10 mfl), (2) grounding side bar or short-circuit-resistant grounding switch.

The performance of a transmission line, and its limitations, are directly related to physical parameters that come from its design, construction, and even its location. Those parameters are common to many electrical circuits resistance, inductance, and capacitance. [Pg.435]

Wound-Rotor Motor Drives. The wound-rotor induction motor, using adjustable rotor-circuit resistance, is rarely used. However, two versions that use solid-state auxiliary equipment are finding limited application. [Pg.418]

The effect of the backfill is to lower the circuit resistance and thus reduce potential loss due to the environment. The additive resistances of the anode/backfill and backfill/soil are lower than the single anode/soil resistance. Backfills attract soil moisture and reduce the resistivity in the area immediately round the anode. Dry backfill expands on wetting, and the package expands to fill the hole in the soil and eliminate voids. [Pg.159]

The total circuit resistance of a groundbed installation includes cable resistance, resistance of the anode to the carbonaceous backfill plus resistance to earth of the backfill column itself. In the case of sea-water installations, the anode resistance is between the sea-water and the anode surface only. [Pg.212]

Once the total circuit resistance is known, applying Ohm s law the rectifier or power-source voltage can be calculated. [Pg.214]

Backfill the soil replaced over the pipe in the trench (general connotation). In cathodic protection, special backfills are packed around the anodes. These backfills are selected to lower circuit resistance of the anode for sacrificial anodes a gypsum/bentonite mixture is used, and for impressed-current anodes, coke breeze. [Pg.1375]

Discharge Current and Discharge Power The discharge current of a battery depends on the external circuit resistance, and is given by Ohm s law as when using the simplified expression (19.5), as... [Pg.347]

Therefore, leakage due to the amplifier after the capacitance is not a problem. The problem is the switehing device before the capacitor. Feenstra et al. (1987a) used a reed relay as the switching device. The open-circuit resistance of a reed relay is larger than 10 il. The leakage current is even smaller than the input of the FET op-amp. (Experience has shown that the printed circuit... [Pg.295]

The resistances of electric resistors arranged in series may be added to obtain the overall circuit resistance. This concept also applies for a heat... [Pg.246]

VL = INDUCTOR VOLTAGE I L = INDUCTOR CURRENT L R = CIRCUIT RESISTANCE S IS A SWITCH... [Pg.60]

An electronic instrument has been developed in which the DC voltage of the potentiometer, or the bridge, is converted to an AC voltage. The AC voltage is then amplified to a higher (usable) voltage that is used to drive a bi-directional motor. The bi-directional motor positions the slider on the slidewire to balance the circuit resistance. [Pg.32]

With these models, an order-of-magnitude estimate of the signal size is obtained. Both models require calculation of the magnetization of the nuclear spins and the noise due to the detector coil. The rms thermal noise voltage for the probe circuit resistance, R0, is (Fig. 5)... [Pg.169]

Fig. 5.36. (a) Equivalent circuit for a solar cell. The parallel resistivity Rp resembles all shunts while the serial resistivity resembles the bulk resistivity of the active area, contact resistivity and circuit resistivity, (b) Ideal I/V characteristics in the 4th quadrant for a solar cell with a negligible RB and an infinite Rp. (c) I/V characteristics in the 4th quadrant for a solar cell with a small Rp and a negligible RB. (d) I/V characteristics in the 4th quadrant for a solar cell with an infinite Rp and a large RB... [Pg.215]

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