Subelement A: — Topic :
Question 6A304
Element 6 (Radiotelegraph)Advantages of capacitor input and choke-input filters when used with rectifiers:
Explanation
Capacitor-input filters, such as the common pi-filter, begin with a shunt capacitor directly across the rectifier output. This capacitor charges to the peak rectified voltage, resulting in a higher DC output voltage, especially under reasonably light load conditions. This confirms statement A.
Choke-input filters, starting with a series inductor, leverage the choke's property of opposing changes in current. This smooths the current flow, leading to significantly better voltage regulation. This means the output voltage remains more stable and closer to the average rectified voltage despite changes in the load, preventing large voltage drops as load increases. This confirms statement B.
Since both statements accurately describe distinct advantages of their respective filter types, C is the correct choice.
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