题目内容（请给出正确答案）

[主观题]

When a BJT transistor is used in a switching circuit, it operates in the ______

A、saturation and active regions

B、active and cutoff regions

C、saturation and cutoff regions

D、active region only

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更多“When a BJT transistor is used …”相关的问题

第1题

When a BJT is in cutoff, the collector-to-emitter voltage is typically equal to _____

A、collector supply voltage

B、collector current times collector resistor

C、0.3 Volts

D、emitter voltage

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第2题

when a bjt is operating in the active region, the voltage drop from the base to the emitter

When a BJT is operating in the active region, the voltage drop from the base to the emitteris approximately equal to the （）。

A、base bias voltage

B、base current times the base resistor

C、diode drop (about 0.7 V)

D、emitter voltage

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第3题

When a BJT has its base-emitter junction forward biased and its collector-base junction also forward biased, it is in the _____

A、saturation region

B、active region

C、cut-off region

D、passive region

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第4题

When a BJT is biased in the saturation region, its base-emitter junction is ________-biased and its collector-base junction is ________-biased.

A.forward; reverse

B.reverse; forward

C.forward; forward

D.reverse; reverse

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第5题

When a BJT has its base-emitter junction forward biased and its collector-base junction reverse biased, it is biased in the _____

A、saturation region

B、active region

C、cutoff region

D、passive region

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第6题

When a BJT is biased in the cutoff region the collector-to-emitter voltage is typically equal to ____（）

A．the emitter voltage

B．0.03V

C．the collector current times the collector resistor

D．the collector supply voltage

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第7题

When a BJT is operating in the active region, the voltage drop from the base to the emitter VBE is approximately equal to the____

A、base bias voltage

B、base current times the base resistor

C、diode drop (about 0.7 V)

D、emitter voltage

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第8题

A BJT has measured dc current values of [图] = 0.1...

A BJT has measured dc current values of= 0.1 mA and= 8.0 mA. When IB is varied by 100 μA, IC changes by 10 mA. What is the value of the βac for this device？（）.

A、80

B、10

C、100

D、800

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