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E7C - Practical Circuits

Extra Class

Filters: types, responses, filter design, active filters

11 questions | Updated: Dec 9, 2025

All E0A E1A E1B E1C E1D E1E E1F E2A E2B E2C E2D E2E E3A E3B E3C E4A E4B E4C E4D E4E E5A E5B E5C E5D E6A E6B E6C E6D E6E E6F E7A E7B E7C E7D E7E E7F E7G E7H E8A E8B E8C E8D E9A E9B E9C E9D E9E E9F E9G E9H
E7C01

How are the capacitors and inductors of a low-pass filter Pi-network arranged between the network’s input and output?
E7C02

What is the frequency response of a T-network with series capacitors and a shunt inductor?
E7C03

What is the purpose of adding an inductor to a Pi-network to create a Pi-L-network?
E7C04

How does an impedance-matching circuit transform a complex impedance to a resistive impedance?
E7C05

Which filter type has ripple in the passband and a sharp cutoff?
E7C06

What are the characteristics of an elliptical filter?
E7C07

Which describes a Pi-L network?
E7C08

Which of the following is most frequently used as a band-pass or notch filter in VHF and UHF transceivers?
E7C09

What is a crystal lattice filter?
E7C10

Which of the following filters is used in a 2-meter band repeater duplexer?
E7C11

Which of the following measures a filter’s ability to reject signals in adjacent channels?