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Analog Electronics

Analog Electronics
Semiconductor material is

 Pentavalent
 Trivalent
 Bilateral
 Tetravalent

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Analog Electronics
The power dissipated by a transistor approximately equals the collector current times

 base supply voltage.
  collector - emitter voltage.
 0.7 V.
 base - emitter voltage.

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Analog Electronics
A transistor has how many PN junctions?

 4.
  2.
 3.
 1.

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Analog Electronics
When Semiconductor materials is heated its resistance

 decreases
None of these
 remains constant
 increases

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Analog Electronics
If the current gain is unknown in an emitter-biased circuit, you cannot calculate the

 emitter current.
  base current.
 emitter voltage.
 collector current.

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Analog Electronics
The current gain of a BJT is

gm /rπ
gm rπ
gm / r0
gm r0

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