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When a triode is used as an amplifier th...

When a triode is used as an amplifier the phase difference between the input signal voltage and the output is

A

zero

B

`pi`

C

`(pi)/(2)`

D

`(pi)/(4)`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the phase difference between the input signal voltage and the output when a triode is used as an amplifier, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Triode Structure**: - A triode consists of three main components: the cathode (heated filament), the grid, and the anode (plate). The cathode emits electrons when heated, which are controlled by the grid and collected by the anode. 2. **Function of the Triode as an Amplifier**: - When used as an amplifier, the triode takes a small input signal and produces a larger output signal. The grid controls the flow of electrons from the cathode to the anode, thus allowing the input signal to modulate the output. 3. **Analyze Phase Relationship**: - In a triode amplifier, the output voltage is taken across the anode. The input signal applied to the grid affects the current flowing to the anode. Due to the nature of the triode's operation, when the input signal increases, the output signal decreases, and vice versa. 4. **Determine the Phase Difference**: - This inverse relationship between the input and output signals results in a phase difference of 180 degrees (or π radians). This means that when the input signal is at its maximum, the output signal is at its minimum, indicating a complete phase reversal. 5. **Conclusion**: - Therefore, the phase difference between the input signal voltage and the output when a triode is used as an amplifier is π radians (or 180 degrees). ### Final Answer: The phase difference between the input signal voltage and the output when a triode is used as an amplifier is **π radians (180 degrees)**. ---
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