Question 528Electricity & Electronics - Assistant Engineer

70% to pass

In referring to figure "F" of the illustration, what statement is true concerning the functional purpose of the RC coupling? Illustration EL-0075

Diagram for USCG Electrical Assistant: In referring to figure "F" of the illustration, what statement is true...

AThe RC coupling functions as a filter by removing the DC component from the varying DC input to produce an AC output shifted 90o from the input.

BThe RC coupling functions as a filter by removing the DC component from the varying DC input to produce an AC output shifted 180o from the input.

CThe RC coupling functions as a filter by removing the DC component from the varying DC input to produce an AC output in phase with the input.

DThe RC coupling functions as a voltage transformer by changing the magnitude of the peak to peak AC voltage at the output proportional to the RC time constant.

AI Explanation

The correct answer is C) The RC coupling functions as a filter by removing the DC component from the varying DC input to produce an AC output in phase with the input. The RC coupling is a simple high-pass filter that removes the DC component of the varying DC input, leaving only the AC component. This results in an AC output signal that is in phase with the original input, as the filter does not introduce any phase shift. The other options are incorrect because: A) The RC coupling does not shift the output 90 degrees, B) The RC coupling does not shift the output 180 degrees, and D) The RC coupling does not function as a voltage transformer to change the magnitude of the signal.

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