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Tuesday, April 16, 2013

DIFINITION OF TERMS

Terms Commonly Used

Coil- Is a wire used in the motor or generator. It is close wound in the stator or in the rotor.
Core Loss- Is the power absorb by the motor even in its no-load.
Current- Is the ratio of the voltage and impedance.
Generator- Is a device capable of transforming mechanical energy into electrical energy.
Impedance- Is the combination of resistance and reactance of the body. It is the degree to which an                                  object   oppose electric current
Motor- Is a device capable of transforming electrical energy into mechanical energy.
Magnetizing Impedance- Is the impedance in the core of a motor, generator of transformer.
Phase Angle- Is the angle on which the phase voltages differs.
Power Factor- Is the cosine of the difference in the angle of voltage and current.
Primary Winding- Is the winding located in source side of a transformer.
Rectifier- Is a device capable of converting Alternating Current into Direct Current. It acts as a 
               one way switch, Open circuit in reverse bias and close circuit in normal bias.
Rotor- Is the part of a motor or generator that is moving.
Secondary Winding- A winding located in the load side of a transformer.
Stator- Is the part of a motor or generator that is not moving.
Transmission Line- Is a connection of wires where the power is being distributed.
VA- Volt-ampere, is the product of voltage and current
VAR- Volt-ampere-reactive, is the energy in a reactive loads such as inductors and capacitors.
Watt - Is the energy of a non-reactive loads, such as resistors.

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