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Analog Electronics

Analog Electronics
A semiconductor material is formed by

 Metallic bonds
None of these
 Covalent bonds
 Electrovalent bonds

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Analog Electronics
The amount of time between the creation and disappearance of a free electrons is called

 recombination
 bound electrons
 life time of the carriers
 drift velocity

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Analog Electronics
In the active region, the collector current is not changed significantly by

 base current.
 base supply voltage.
  collector resistance.
 current gain.

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Analog Electronics
An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

79.5 mV
39.5mV
795mV
395mV

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Analog Electronics
The voltage follower has a

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

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Analog Electronics
Field effect transistor (FET) operates on

  majority carriers only.
  on both majority and minority carriers.
  positive charged ions only.
  minority carries only .

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