Sage-Tips

Why does the alternator output voltage decrease with inductive loading?

Alternator output voltage decreases with increasing of inductive load because the inductive load draws huge load current and oppose the field fluxes generated in the rotating field poles by the DC exciter.

Why is there a voltage drop across a resistor?

It’s because a resistor impedes the amount of charge that flows through it depending on its resistance. This leads to a decrease in current through the circuit. Hence the factor by which voltage is reduced (I*R), and hence current, is called the voltage drop of the resistor.

What is the effect of using resistive capacitive and inductive load on alternator?

If the load is purely resistive, the power factor is 100\% and the voltage drop will be approximately8\% to 20\% of the no-load voltage. An inductive load brings a more appreciable voltage drop of 25\% to 50\% of the no-load voltage and a capacitive load tends to raise the alternator output voltage.

Does inductor decrease voltage?

There will be a voltage across an inductor as the current in the inductor changes. Once the current reaches its steady-state value it will have zero voltage drop, because the current will not be changing.

What is resistive load and inductive load?

In resistive loads, such as light bulbs, the voltage and current waves match, or the two are in phase. As you might guess from the name, resistive loads only resist the current and are the simplest type of load. In inductive loads, such as an electric motor, the voltage wave is ahead of the current wave.

What is resistive load and capacitive load?

Because resistive load banks provide a power factor of 1, they are unable to test a power source at its rated kVA. Capacitive load elements use capacitors that store electrical charge. They resist changes in voltage, which causes current to peak before voltage during each electrical cycle.

What is the voltage that is dropped as a result of current flowing through a resistance such as a pipeline called?

IR drop is the electrical potential difference between the two ends of a conducting phase during a current flow. This voltage drop across any resistance is the product of current (I) passing through resistance and resistance value (R).

Does the generated voltage of the synchronous generator increase or decrease in the case of the resistive load and why?

If we connect inductive load with the synchronous generator Vø and terminal voltage Vt will decrease largely. In the case of the resistive load, there will slightly decrease in the Vø and terminal voltage Vt. If the load is capacitive then the Vø and terminal voltage Vt will increase.