题目内容

For the forward-active operating mode of an npn bipolar transistor (common base), the B-E junction and B-C junction are and ___ biased, respectively.

A. forward; forward
B. forward; reverse
C. reverse; forward
D. reverse; reverse

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Ideally, the minority carrier electron concentration in the base is a linear function of distance, which implies ___________.

A. enough diffusion
B. no diffusion
C. enough recombination
D. no recombination

In cutoff mode, all currents in the transistor are very small. ()

For an npn bipolar transistor in a common-emitter configuration with an input of sinusoidal signal voltage, the sinusoidal voltages in the collector–emitter portion of the circuit are larger than the signal input voltage, so that the circuit has produced a voltage gain in the time-varying signals. ()

The linear relation between collector current and collector– emitter voltage is called a ______ and can be used to visualize the bias condition and operating mode of the transistor

A. Kirchhoff line
B. load line
C. operation line
D. magic line