Q. What is the function of a coupling capacitor in an amplifier circuit?
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A.
To block DC and allow AC signals
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B.
To amplify the signal
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C.
To provide feedback
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D.
To stabilize the power supply
Solution
Coupling capacitors are used to block DC components while allowing AC signals to pass through, facilitating signal transfer between stages.
Correct Answer:
A
— To block DC and allow AC signals
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Q. What is the main characteristic of a depletion-mode FET?
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A.
It is normally on
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B.
It is normally off
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C.
It has a negative resistance
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D.
It requires a positive gate voltage to conduct
Solution
Depletion-mode FETs are normally on, meaning they conduct current without any gate voltage applied.
Correct Answer:
A
— It is normally on
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