It s high time the government_ ____ sorry some measures to raise people s awareness of env
A.will take
B.take
C.took
D.takes
A.will take
B.take
C.took
D.takes
A、common-source
B、common-gate
C、common-drain
D、current-controlled
A、Zi = βre
B、Zi = re
C、Zi = re (α – 1)
D、Zi = re
A、input impedance
B、voltage feedback ratio
C、small-signal current gain
D、output admittance
A、input impedance
B、voltage feedback ratio
C、small-signal current gain
D、output admittance
A、input impedance
B、voltage feedback ratio
C、small-signal current gain
D、output admittance
The current gainof an FET amplifier is _______.
A、generally assumed to be zero
B、undefined
C、depends upon the value of gm for the device
D、less than or equal to 1
A、input impedance
B、voltage feedback ratio
C、small-signal current gain
D、output admittance
A、has a very negative
B、has a very positive
C、has no
D、may be positive or negative and depends on the rest of the circuit
A、ZO = RD = 2.1 kΩ
B、ZO = rd = 90 kΩ
C、ZO = RD ∥ rd = 2052 Ω
D、ZO depends on the drain current ID.
A、less than
B、equal to
C、less than or equal to
D、greater than
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