What if the direction of field current is reversed in case of an alternator?

Detailed Solution. As the field current rotation does not affect the phase sequence of an alternator so with reversing the direction of field current the phase sequence remains the same.

What will happen if we reverse the direction of rotation?

When the current is reversed the rotational direction of the motor is also reversed. Now,when we change both the electric current and magnetic field simultaneously, the direction of the rotation of the motor stays the same. Because the reversion of the direction by each of the elements are cancelled by each other.

What happens if shunt field connection is reversed in the generator?

What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will run in reverse direction. The motor will run at its normal speed in the same direction as before. The motor will stop.

What will be the effect if any of reversing both the battery terminals and the polarity of the magnet on the rotation *?

It is the same as if you reverse 2 magnets. Where they once attracted try now repel so the rotation is now in the other direction. If the motor has field windings. Reversing the polarity will not cause a change in direction, because you are changing other polarities.

How can the direction of rotation change if the line terminals are reversed will the direction of rotation change why?

When both (the direction of field as well as that of armature current) are reversed the direction of rotation will not change. So in case of DC shunt motor, if the supply terminals are interchanged, there is no change in direction of rotation.

How the rate of change of the magnetic flux affects the induced emf or current in a circuit?

As seen in previous Atoms, any change in magnetic flux induces an electromotive force (EMF) opposing that change—a process known as induction. Motion is one of the major causes of induction. For example, a magnet moved toward a coil induces an EMF, and a coil moved toward a magnet produces a similar EMF.