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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

 three.
 one.
 four.
 two.

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Analog Electronics
Junction field effect transistors (JFET) contain how many diodes?

  3.
  4.
  2.
  1.

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Analog Electronics
In a JFET, if the gate voltage Vgs is made more negative, then

  depletion region decreases.
  channel conductivity increases.
  channel conductivity decreases.
  channel electric current increases .

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Analog Electronics
The voltage follower has a

  closed - loop bandwidth of zero.
  closed - loop voltage gain of unity.
  large closed - loop output impedance.
  small open - loop voltage gain.

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Analog Electronics
Single phase, 230 V, 1 KW heater is connected acrose single phase 230 V, 50 Hz supply through a diode. The power delivered to the heater element

 None of above.
 100 W.
 1000 W.
  500 W.

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Analog Electronics
The β of a transistor is the ratio of the

  collect current to base current.
 collect current to emitter current.
 emitter current to collector current.
 base current to collector current.

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