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Analog Electronics

Analog Electronics
The feedback factor of a Wien bridge oscillator using Op-Amp is

 1/2
 1/3
 1/4
 1

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Analog Electronics
When the two input terminals of a differential amplifier are grounded

  the base currents are equal.
  the collector currents are equal.
  the ac output voltage is zero.
  an output error voltage usually exists.

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Analog Electronics
The current gain of a pnp transistor is

 the negative of the npn current gain.
 the collector current divided by the emitter current.
 near zero.
 the ratio of collector current to emitter current.

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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.
  500 W.
 100 W.
 1000 W.

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Analog Electronics
The biasing circuit that gives best stability to Q point is

  emitter resistor biasing.
  feedback resistor biasing .
  potential divider biasing.
  base resistance biasing.

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Analog Electronics
The resistance of pn junction when it is forward biased in the order of

 Mega Ohm
 Kilo Ohm
None of these
 Ohm

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MORE MCQ ON Analog Electronics

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