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Analog Electronics

Analog Electronics
What will be the Potential barrier for Si Diode ?

 0.3 V
 0.07 V
 0.7 V
 0.05 V

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Analog Electronics
The output voltage of an emitter follower is across the

  load resistor.
 emitter diode.
 emitter diode and external AC emitter resistance.
 DC collector resistor.

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Analog Electronics
The current gain of a BJT is

gm rπ
gm r0
gm /rπ
gm / r0

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Analog Electronics
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is

1/5KΩ
11KΩ
5KΩ
1/11KΩ

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Analog Electronics
Energy gap of semiconductor is approx

 > 8 eV .
 0 eV.
 1 eV.
 5 - 8 eV.

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

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

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