Deep Dive: E7C02
The correct answer is B: High-pass. What is the frequency response of a T-network with series capacitors and a shunt inductor is high-pass. Series capacitors block low frequencies, shunt inductor shorts high frequencies, resulting in high-pass. For amateur radio operators, this is important for filter design. Understanding this helps when designing filters.
Why Other Answers Are Wrong
Option A (Low-pass): Incorrect. Low-pass isn't correct - T-network with series capacitors and shunt inductor is high-pass. Low-pass is wrong. Option C (Band-pass): Incorrect. Band-pass isn't correct - T-network with series capacitors and shunt inductor is high-pass. Band-pass is wrong. Option D (Notch): Incorrect. Notch isn't correct - T-network with series capacitors and shunt inductor is high-pass. Notch is wrong.
Exam Tip
T-network with series capacitors and shunt inductor = high-pass. Think 'T'-network 'S'eries 'C'apacitors = 'H'igh-'P'ass. Series capacitors block low frequencies, shunt inductor shorts high frequencies, resulting in high-pass. Not low-pass, not band-pass, not notch - just high-pass.
Memory Aid
T-network with series capacitors and shunt inductor = high-pass. Think 'T'-network 'S'eries 'C'apacitors = 'H'igh-'P'ass. Series capacitors block low frequencies, resulting in high-pass. Important for filter design.
Real-World Example
A T-network with series capacitors and a shunt inductor: Its frequency response is high-pass. The series capacitors block low frequencies, and the shunt inductor provides a path for high frequencies. This is the response - high-pass.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E7C
Reference: 2024-2028 Question Pool · E7 - Practical Circuits
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E7C topic.