Electromechanical Energy Conversion & DC Generators

<p>It can cause both cross magnetizing and demagnetizing effects (D)</p> Signup and view all the answers

<p>To maintain equal voltage across all generators (C)</p> Signup and view all the answers

<p>Self excited generators (A)</p> Signup and view all the answers

<p>To reduce eddy current losses (A)</p> Signup and view all the answers

<p>They provide high starting torque (C)</p> Signup and view all the answers

<p>Decreasing the armature resistance (C)</p> Signup and view all the answers

<p>To counteract cross magnetizing effects (D)</p> Signup and view all the answers

The process of converting electrical energy into mechanical energy or vice versa using magnetic fields.

The force exerted on a conductor carrying current in a magnetic field. It can be calculated using the equation F = ILB*sin(theta), where F is the force, I is the current, L is the length of the conductor, B is the magnetic field strength, and theta is the angle between the current and magnetic field.

The energy stored in a magnetic field system due to the magnetic flux density and the current flowing in the coils. It can be calculated using the equation W = 1/2LI^2, where W is the energy, L is the inductance, and I is the current.

A device that converts mechanical energy into direct current (DC) electricity using electromagnetic induction. It uses a rotating armature winding with commutator to convert AC to DC.

The process of connecting multiple DC generators in parallel to increase the total power output. An equalizer bar ensures equal voltage distribution and a cross connection of the field windings helps stabilize the system.

A method to determine the magnetic force in a system by calculating the change in stored energy with respect to the position of a moving part. It helps understand the relationship between energy and force in magnetic fields.

A type of DC generator where the field winding is connected in parallel with the armature winding. The current flowing through the field winding creates a magnetic field that induces an EMF in the armature. It has a stable output voltage but is less sensitive to load changes.

A type of winding used in DC generators where the armature coils are connected in a series of loops. The series connection provides a high starting torque but the voltage output is highly dependent on the load.