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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
Three difference Q points are shown on a load line. The upper Q point represents the

 intermediate current gain.
 minimum current gain.
  maximum current gain.
 cutoff point.

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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

1/5KΩ
5KΩ
1/11KΩ
11KΩ

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Analog Electronics
Barrier potential at the temperature (25°C) is 0.7 V, its value at 125°C is

  0.7 V.
  0.3 V.
  0.9 V.
  0.5 V.

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Analog Electronics
Reverse saturation electric current in a silicon pn junction diode nearly doubles for very

  2° rise in temperature.
  5° rise in temperature.
  10° rise in temperature.
  6° rise in temperature.

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Analog Electronics
The per unit impedance of a synchorous machine is 0.242. If base voltage is increased by 1.1 times, then per unit value will be

 0.242.
  0.200.
 0.266.
 0.220.

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