Why does terminal voltage increase with capacitive loading?

With no-load connected there is no secondary current which means that the secondary voltage is at its maximum value. However when fully-loaded, secondary currents flow producing core losses and copper losses within the winding. A leading power factor (capacitive load), the output terminal voltage will rise.

What are the effects of inductive load capacitive load and resistive load on synchronous generator?

If the synchronous generator is connected with the inductive load its voltage regulations are highly positive. If the load is resistive then the voltage regulation is less positive. If the load is capacitive then the voltage regulation is negative.

What is the difference between resistive and capacitive loads?

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.

How do the output voltage and frequency vary when a resistive load is connected to the synchronous generator output?

As output current increases, a larger voltage drop is created across the resistors and in turn output voltage decreases. For a synchronous generator connected to an inductive load: The output voltage of a synchronous generator is a function of the: speed of rotation and strength of the field electromagnet.

What is the difference between inductive and resistive loads?

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.

When the load on alternator is purely resistive then effect of armature reaction is?

Effect of Load Power Factor on Armature Reaction Case 1 – Unity Power Factor Load − When the load has unity power factor i.e. pure resistive load, then the armature reaction distorts the main field flux in the air gap of the machine and not to weaken it.