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Analog Electronics

Analog Electronics
In a RC phase shift oscillator, the minimum number of R-C networks to be connected in cascade will be

 two.
 one.
 three.
 four.

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Analog Electronics
A transistor has how many PN junctions?

 1.
 4.
  2.
 3.

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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 V.
 400√ (2/3) V.
 400√ 2 V.

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Analog Electronics
In CE configuration, the input V-I characteristics are drawn by taking

  VBE versus IE for constant value of VCE.
  VBE versus IB for constant value of VCE.
  VCE versus IC for constant value of IE.
  VBE versus IB for constant value of IC.

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Analog Electronics
Reverse saturation electric current in a silicon pn junction diode nearly doubles for very

  6° rise in temperature.
  5° rise in temperature.
  2° rise in temperature.
  10° rise in temperature.

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Analog Electronics
What will happen if doping of an intrinsic semiconductor with pentavalent impurity atom ?

 Fermi level raises
None of these
 Fermi level not change
 Fermi level fall

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