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Analog Electronics

Analog Electronics
Which of following is the point of reference JFET?

  Gate.
  Source.
  None of above.
  Drain.

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Analog Electronics
Assume that diode D1, D2 in figure are ideal diodes. The value of current is mcq-diagram

 2 mA.
 0.5 mA.
 1 mA.
 0 mA.

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Analog Electronics
An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is

0.5
0.75
0.25
1

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Analog Electronics
The emitter of the transistor is doped

  none of these
  moderately.
  lightly.
  heavily.

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

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

 two.
 one.
 four.
 three.

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