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Analog Electronics

Analog Electronics
Semiconductor material is

 Trivalent
 Bilateral
 Pentavalent
 Tetravalent

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Analog Electronics
A voltage regulator is a circuit which

  maintains constant DC output voltage inspite of the fluctu
  smoothed the AC variation in DC output voltage.
None of these
  converts the AC voltage to DC voltage.

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

 Kilo Ohm
 Ohm
None of these
 Mega Ohm

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Analog Electronics
If the current gain is unknown in an emitter-biased circuit, you cannot calculate the

  base current.
 collector current.
 emitter voltage.
 emitter current.

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Analog Electronics
Which of these is the best description of a zener diode?

  It is a constant electric current device.
  It is a constant voltage device.
  It is a rectifier diode.
  It works in the forward region.

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Analog Electronics
The most commonly used amplifier in sample & hold circuits is

A unity gain non-inverting amplifier
An inverting amplifiers with a gain of 100
An inverting amplifier with a gain of 10
A unity gain inverting amplifier

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