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Analog Electronics

Analog Electronics
A LED produces light when

  reverse biased.
  forward biased.
  unbiased.
None of these

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Analog Electronics
Voltage controlled oscillators are used commonly in

 Frequency Modulators
 Pulse Modulators Frequency Modulators Phase Clocked loops
 Phase Clocked loops
 All the above

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Analog Electronics
For a JEFT, when VDS is increased beyond the pinch-off voltage, the drain electric current

  remains constant.
  increased.
  first increase and then decreased.
  decreases.

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

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

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Analog Electronics
The power dissipated by a transistor approximately equals the collector current times

 base - emitter voltage.
  collector - emitter voltage.
 0.7 V.
 base supply voltage.

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Analog Electronics
At the unity-gain frequency, the open-loop voltage gain is

  very large
  zero.
  1.
  AV(mid).

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