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Analog Electronics

Analog Electronics
When VGS = 0 V, a JFET is

  an open switch.
  saturated.
  an analog device.
  cut off.

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Analog Electronics
In deriving ac equivalent circuit for an amplifier circuit we short circuit

All capacitors
All resistors
All transistors
All inductors

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Analog Electronics
The voltage divider biasing circuit is used in amplifiers quite often because it

  makes the operating point almost independent of β.
  reduces the DC base electric current.
  limits the AC signal going to base.
  reduces the cost of the circuit.

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Analog Electronics
The voltage follower has a

  small open - loop voltage gain.
  closed - loop bandwidth of zero.
  closed - loop voltage gain of unity.
  large closed - loop output impedance.

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Analog Electronics
If a transistor operates at the middle of the load line, a decrease in the base resistance will move the Q point

 nowhere.
  up.
 down.
 off the load line.

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Analog Electronics
Relaxation Voltage controlled oscillators are used to generate

 Triangular wave
 Sawtooth wave
 Both B and C
 Sinusoidal wave

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