题目内容

Three operating conditions in the MOS capacitor: ______ , ______ , ______ .

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The advantages of the GaAs MESFET include ( ).

A. higher electron mobility,
B. smaller transit time and faster response;
C. decreased parasitic capacitance
D. a simplified fabrication process

Power MOSFET transistor structures include ( ).

A. DMOS:double-diffused MOS (DMOS) transistor
B. VMOS:vertical channel MOS (VMOS) transistor
C. HEXFET
D. npn bipolar transistor

Two breakdown mechanisms in a bipolar transistor are ( ).

A. punch-through.
B. reverse breakdown
C. avalanche breakdown
D. near avalanche breakdown

In a npn bipolar transistor, for the emitter injection efficiency to be close to unity, the emitter doping must be ( ) compared to the base doping.

A. large
B. small
C. same
D. proportional

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