Basic Qualification · B-004 Circuit components · B-004-005-001
What is one reason a triode vacuum tube might be used instead of a transistor in a circuit?
- AIt uses less current
- BIt is much smaller
- CIt uses lower voltages
- DIt may be able to handle higher power
Correct answer: D — It may be able to handle higher power. From the official ISED question bank, verified word for word.
Why
Triode vacuum tubes can withstand much higher voltages and dissipate more heat than small transistors, making them suitable for powerful radio transmitters where solid-state devices might burn out. The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
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