Ham Radio Exam Prep
Current Ham Radio Test Pools
Technician License 2018-2022
Free Practice Test: Technician
General License 2019-2023
Free Practice Test: General
Amateur Extra License 2020-2024
Free Practice Test: Amateur Extra
Gallery
Resources
LIVE
Amateur Extra Class: 2020–2024
Today
Sections
E1: Commission's Rules
E2: Operating Procedures
E3: Radio Wave Propagation
E4: Amateur Practices
E5: Electrical Principles
E6: Circuit Components
E7: Practical Circuits
E8: Signals and Emissions
E9: Antennas and Transmission Lines
E0: Safety
Quick Index
Practice Test
Help support WaveTalkers using
Buy Me A Coffee!
Element 4
E7
E7D
E7D07
E7D07:
What is the purpose of C2 in the circuit shown in Figure E7-2?
It bypasses rectifier output ripple around D1
It is a brute force filter for the output
To self-resonate at the hum frequency
To provide fixed DC bias for Q1
E7D01
E7D02
E7D03
E7D04
E7D05
E7D06
E7D07
E7D08
E7D09
E7D10
E7D11
E7D12
E7D13
E7D14
E7D15