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Analog Electronics

Analog Electronics
When were the first solid state devices manufactured ?

 1970
 1960
 1940
 1950

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Analog Electronics
Conduction electrons have more mobility than holes because they

 have negative charge
 need less energy to move them
None of these
 are free

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Analog Electronics
When P-type substance is connected with negative and n-type is connected with positive terminal of the battery then P-n junction diode is in ....................

 Reverse biased
None of these
 Forward biased
 No biased

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Analog Electronics
Electron mobility is defined as

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

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Analog Electronics
The common-mode voltage gain is

  equal to the voltage gain.
  smaller than the voltage gain.
  greater than the voltage gain.
None of these

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Analog Electronics
A zener diode voltage regulator has load requirement of 12 V and 2 Amp. The zener diode's minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is maximum efficiency of circuit?

 66.3 %.
 34.3 %.
 45.5 %.
 52.8 %.

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