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Analog Electronics

Analog Electronics
Semiconductor material is

 Tetravalent
 Pentavalent
 Bilateral
 Trivalent

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Analog Electronics
If the series resistance increases in an unloaded zener regulator, the zener current

  stays the same.
  equals the voltage divided by the resistance.
  increases.
  decreases.

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Analog Electronics
The following relationship between α and β are correct except

  α = β / (1 + β).
  1 - α = 1 / (1 + β).
  β = α / (1 - α).
  α = β / (1 - β).

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Analog Electronics
The encapsulation of transistor is necessary for

Avoiding loss of free electrons
Mechanical ruggedness
Preventing photo-emission effects
Preventing radio interference

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Analog Electronics
If the base resistor has zero resistance, the transistor will probably be

 in cutoff.
 saturated.
  destroyed.
None of these

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

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

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