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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

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

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Analog Electronics
A JFET can operate in

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

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Analog Electronics
In a pnp transistor, the major carriers in the emitter are

 both.
 free electrons.
 neither.
  holes.

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Analog Electronics
In a zener diode shunt voltage regulator, the diode regulates so long as it is kept in ______________________ condition.

  unloaded.
  loaded.
  reverse.
  forward.

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Analog Electronics
What is the range of energy band gap of semiconductors ?

 0 ev
 1-3 ev
 10-15 ev
 14-15 ev

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Analog Electronics
A 3 - phase diode bridge rectifier is fed from a 400 V rms, 50 Hz, 3 phase AC source. If the load is purely resistive, then peak instantaneous output voltage is equal to

 400√ (2/3) V.
 400√ 2 V.
 400 / √ 3 V.
 400 V.

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