Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-002-005
In a grounded grid amplifier using a triode vacuum tube, the plate is connected to a radio frequency choke. The other end of the radio frequency choke connects to the:
- A ground
- B B- (bias)
- C B+ (high voltage)
- D filament voltage
Correct answer: C — B+ (high voltage). From the official ISED question bank, verified word for word.
Why
In a grounded grid amplifier, the radio frequency choke acts as a gate that lets high voltage flow to the plate while blocking radio signals from escaping. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.