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Analog Electronics

Analog Electronics
When there is no base current in a transistor switch, the output voltage from the transistor is

  high.
 unchanged.
 low.
 unknown.

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Analog Electronics
The opamp can amplify

  both AC and DC signals.
  neither AC not DC signals.
  DC signals only.
  AC signals only.

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Analog Electronics
In a JFET, if the gate voltage Vgs is made more negative, then

  depletion region decreases.
  channel conductivity increases.
  channel electric current increases .
  channel conductivity decreases.

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Analog Electronics
If the load resistance increases in a zener regulator, the zener current

  decreases.
  Increases.
  stays the same.
  equals the source voltage divided by series resistance.

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Analog Electronics
The following are the necessary requirements of an oscillator

 Frequency stability
 Amplitude stability
 Both A and B
 Power stability

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Analog Electronics
The extremely high input impedance of a MOSFET is primarily due to the

  extremely small leakage electric current of its gate capacitor.
  absence of its channel.
  depletion of electric current carriers.
  negative gate-source voltage.

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