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Analog Electronics

Analog Electronics
What is the input impedance of a common-gate configured JFET?

  Low.
  Very high.
  High.
  Very low.

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Analog Electronics
The main advantage of CMOS is its

  small - signal operation.
  high power rating.
  switching capability.
  low power consumption.

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Analog Electronics
One of the following is the primary function of an oscillator

 produces sinusoidal oscillations
 generates sustained oscillations at a constant amplitude and specific frequency
 generates non sinusoidal waveforms
None of these

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Analog Electronics
An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed

39.5mV
395mV
795mV
79.5 mV

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Analog Electronics
A LED produces light when

  unbiased.
None of these
  forward biased.
  reverse biased.

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Analog Electronics
Generally, the gain of a transistor amplifier falls at high frequencies due to the

Coupling capacitor at the output
Coupling capacitor at the input
Internal Capacitance of the device
Skin effect

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