题目内容

A Zener diode is designed to operate in the () region of its characteristic curve.

A. forward operating
B. reverse bias
C. reverse breakdown
D. zero voltage

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When a transistor is in the active region operation, the base-emitter junction ().

A. and the base–collector junction is both forward-biased
B. and the base–collector junction is both reverse-biased
C. is forward-biased while the base–collector junction is reverse-biased
D. is reverse-biased while the base–collector junction is forward-biased

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When the top of the output voltage wave is cut down in an amplifier whose phase shift between input and output is 180〫, it means that () distortion occurred.

A. cutoff
B. saturation
C. crossover
D. frequency

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A simple capacitor filter fed by a full-wave rectifier develops 14.5 V dc at 8.5% ripple factor. The output ripple voltage (rms) is

A. 12V
B. 14.5V
C. 1.2V
D. None of them

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To implement a voltage amplifier, () feedback should be introduced.

A. voltage-series negative
B. voltage-shunt negative
C. current-series negative
D. current-shunt negative

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A Zener diode is designed to operate in the () region of its characteristic curve.

A. forward operating B. reverse bias C. reverse breakdown D. zero voltage

When a transistor is in the active region operation, the base-emitter junction ().

When the top of the output voltage wave is cut down in an amplifier whose phase shift between input and output is 180〫, it means that () distortion occurred.

A simple capacitor filter fed by a full-wave rectifier develops 14.5 V dc at 8.5% ripple factor. The output ripple voltage (rms) is

To implement a voltage amplifier, () feedback should be introduced.

A. forward operating
B. reverse bias
C. reverse breakdown
D. zero voltage