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Analog Electronics

Analog Electronics
Which of the following is Pentavalent impurity?

 gallium
 boron
 indium
 antimony

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Analog Electronics
A 3 - phase diode bridge rectifier is fed from a 400 V rms, 50 Hz, 3 phase AC source. If the load is purely resistive, then peak instantaneous output voltage is equal to

 400 / √ 3 V.
 400√ (2/3) V.
 400 V.
 400√ 2 V.

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

 0.5V
 0.7V
 0.3V
 0.03V

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Analog Electronics
Most of the electrons in the base of an NPN transistor flow

  into the collector.
 into the base supply.
 out of the base lead.
 into the emitter.

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Analog Electronics
When will be the P-N junction is formed ?

 In depletion region
None of these
 In reverse biased region
 Two opposite doped materials

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Analog Electronics
Energy gap of conductor is

 8 eV.
 0 eV.
 5 - 8 eV.
 1 - 2 eV.

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