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Analog Electronics

Analog Electronics
An opamp has a voltage gain of 200,000. If the output voltage is 1 V, the input voltage is

  1 V.
  2 micro V.
  10 V.
  5 5 micro V.

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Analog Electronics
Electron mobility is defined as

 Diffusion velocity per unit field
None of these
 Drift velocity per unit field
 the movement of electrons

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Analog Electronics
A JFET can operate in

  none of these.
  depletion and enhancement mode only.
  depletion mode only.
  enhancement mode only.

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Analog Electronics
MOSFET requires

 None of these.
 A large input current.
  Only small input current.
 A large input current and high voltage.

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Analog Electronics
Junction field effect transistors (JFET) contain how many diodes?

  1.
  3.
  4.
  2.

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Analog Electronics
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is

5KΩ
11KΩ
1/11KΩ
1/5KΩ

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