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Analog Electronics

Analog Electronics
The majority carriers in the emitter of a PNP transistor are

 pentavalent atoms.
 free electrons.
 trivalent atoms.
 holes.

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Analog Electronics
The silicon transistor are more widely used than germanium transistors because

  they have better ability to dissipate heat.
  they have smaller leakage current.
  they have larger electric current carrying capacity.
  they have smaller depletion layer.

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Analog Electronics
The conduction loss verses device current characteristics of power MOSFET in best approximately by

 a straight line.
 a parabola.
 an exponentially decaying function.
 a rectangular hyperbola.

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Analog Electronics
The leakage current in a pn junction is in order of

 µA
None of these
 A
 KA

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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

795mV
39.5mV
395mV
79.5 mV

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Analog Electronics
When there is no base current in a transistor switch, the output voltage from the transistor is

  high.
 unchanged.
 low.
 unknown.

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