Why is a generator armature more difficult to rotate when it is connected to and supplying electric current to a circuit quizlet?

Why is a generator armature more difficult to rotate when it is connected to and supplying electric current to a circuit quizlet?

Why is a generator armature harder to rotate when it is connected to a circuit and supplying electric current? because the ring is metal, its relatively low resistance results in correspondingly high alternating current.

What are the three main ingredients that characterize a generator?

The major components of a generator include: a rotor, the rotating part of the generator; a stator, the stationary part of the generator; an armature, which is the power producing component of the generator (the armature can be the rotor or stator, but typically is the stator); and a field, the magnetic field component …

Why is it important that the current in the armature of a motor that uses a permanent magnet periodically change direction?

Force acts on the current in the magnetic field and deflects the galvanometer coil. Why is it important that the current in the armature of a motor that uses a permanent magnet periodically change direction? The probable cause of Earth’s magnetic field is the constant flow of the molten part of Earths crust.

How can voltage be induced in a wire with the help of a magnet explain your answer?

A magnet and a coil of wire can be used to produce an electric current. A voltage is produced when a magnet moves into a coil of wire. The direction of the induced voltage is reversed when the magnet is moved out of the coil again. It can also be reversed if the other pole of the magnet is moved into the coil.

What are the three ways in which voltage can be induced in a loop wire?

There are therefore three ways an emf can be induced in a loop: Change the magnetic field. Change the area of the loop. Change the angle between the field and the loop.

Why is more than one coil used in a generator armature?

Practical generators use many armature coils. They also use more than one pair of magnetic poles. In addition, the increased number of poles provides a stronger magnetic field (greater number of flux lines). This, in turn, allows an increase in output voltage because the coils cut more lines of flux per revolution.

What is the major difference between electric charges and magnetic fields?

In the electric field, the like charges repel each other, and the unlike charges attract each other, whereas in a magnetic field the like poles repel each other and the unlike poles attract each other.

Why does the armature of an AC and DC generator rotate?

Rotating motion is a very simple one to create and is in fact one of the oldest types of motion to be used in machinery. An oscillating motion on the other hand has a lot of physical constraints associated with the start and stop motions. In fact the easiest way to get an oscillating motion is to use a circular motion to create it.

How is the current produced in a generator?

It has three completely separate windings in which current is produced, but a single rotating magnetic field. Within the generator, there is no electrical connection between the windings. The rotating magnetic field is the rotor and the windings in which current is produced are in the fixed stator.

How does a generator create a magnetic field?

Generators, motors, transformers, and solenoids each use the principle of electromagnetism. This is the ability to create electrical current in a conductor by moving a magnetic field past the conductor. The reverse is also true: a magnetic field is produced in a conductor by passing electrical current through the conductor.

How does the commutator convert AC to DC in a DC generator?

In the most simple of explanations, by switching polarity at the same moment the AC signal reverses direction. The polarity of the magnetic field determines the direction in which the current travels in the coils mounted on the rotor. For a simple example…