In over compounded generator, full load terminal voltage is
A. Almost zero
B. Less than no load terminal voltage
C. More than no load terminal voltage
D. Equal to no-load terminal voltage
Answer: Option C
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Related Questions on D.C. Generators
A cumulatively compounded long shunt generator when operating as a motor would be
A. Cumulatively compounded long shunt
B. Differentially compounded long shunt
C. Cumulatively compounded short shunt
D. Differentially compounded short shunt
A. Demagnetization only
B. Cross magnetization as well as magnetization
C. Cross-magnetization as well as demagnetizing
D. Cross magnetization only
Compounding: In a compound generator, the field winding is a combination of a shunt winding (connected in parallel with the armature) and a series winding (connected in series with the armature).
Over-Compounding: In an over-compounded generator, the series field winding is designed to significantly boost the voltage at full load.
Voltage Rise: As the load current increases, the current through the series winding also increases, producing a stronger magnetic field. This stronger field induces a higher voltage in the armature, leading to a higher terminal voltage at full load compared to no-load.
Visual Representation:
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overcompounded DC generator
Key Points:
Over-compounded generators are used in applications where a constant voltage is desired at the load, even as the load current varies.
Common applications include supplying power to long transmission lines or locations far from the power source.