MCQ
Mark the correct options:
- AA diode valve can be used as a rectifier.
- BA triode valve can be used as a rectifier.
- CA diode valve can be used as an amplifier.
- DA triode valve can be used as an amplifier.
✓
Answer
-
A diode valve can be used as a rectifier.
-
A triode valve can be used as a rectifier.
-
A triode valve can be used as an amplifier.
Explanation:
A diode valve and a triode valve allow current to flow only in one direction. Since a rectifier is a device that converts alternating current (bi-directional) into direct current (uni-directional), a diode valve and a triode valve can be used as rectifiers. A triode valve can control its output in proportion to the input signal. That is, it can act as an amplifier, whereas a diode valve cannot control its output in proportion to the input signal. So, it cannot be use as an amplifier.
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