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Important Questions for "Oscillations":

[1]

  1. Derive the Barkhausen criterion for sustained oscillations.
  2. Discuss the Fermi level in intrinsic and extrinsic semiconductors.
  3. Simplify the given expressions using Boolean Algebra method.

[2]

  1. Derive the Barkhausen criterion for sustained oscillations.
  2. Discuss the Fermi level in intrinsic and extrinsic semiconductors.
  3. Convert hexadecimal number (49)16 to decimal equivalent.

[3]

  1. Derive the Barkhausen criterion for sustained oscillations.
  2. Draw the circuit of R-C coupled CE amplifier and explain its frequency response curve at different frequency ranges. Why does the gain decrease in low and high frequency ranges?
  3. Simplify the given expressions using Boolean Algebra method.

[4]

  1. Barkhausen criterion for sustained oscillations states that A=1.
  2. Which transistor configuration has a maximum current gain of unity?
  3. What is the gate voltage in a JFET at which drain current becomes zero?

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