题目内容

A “normally off ” MOSFET is called a () transistor.

A. depletion mode
B. enhancement mode
C. n channel
D. p channel

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The work function of the metal is ( ) than that of Si in ideal MOS capacitor.

A. smaller
B. as same as
C. larger

When the metal voltage is small positive, the state of ideal MOS capacitor (n channel silicon) is ( ).

A. equilibrium
B. accumulation
C. depletion
D. inversion

When the metal voltage is zero, the state of ideal MOS capacitor (n channel silicon) is ( ).

A. equilibrium
B. accumulation
C. depletion
D. inversion

The work function of the n+ poly silicon is ( ) than that of Si in real n channel MOSFET.

A. smaller
B. as same as
C. larger