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Analog Electronics

Analog Electronics
The number of orbiting electrons in germanium atom are :

 32
 36
 28
 42

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Analog Electronics
Energy gap of conductor is

 1 - 2 eV.
 5 - 8 eV.
 0 eV.
 8 eV.

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Analog Electronics
When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

 increases by a factor of 6.
  remains almost the same.
 is zero.
 decreases by a factor of 6.

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Analog Electronics
Generally, the gain of a transistor amplifier falls at high frequencies due to the

Coupling capacitor at the input
Coupling capacitor at the output
Skin effect
Internal Capacitance of the device

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Analog Electronics
In an NPN transistor, the majority carriers in the emitter are

 holes.
 both.
  free electrons.
 neither.

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Analog Electronics
The number of valence electrons in silicon atom are :

 1
 2
 4
 3

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