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Analog Electronics

Analog Electronics
The most commonly used semiconductor is

 Sulphur
 Germanium
 Silicon
 Carbon

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Analog Electronics
The β of a transistor may be determined directly from the curve plotted between

  VCE and IC for constant IE.
  VCE and IE for constant IB.
  VCE and IC for constant IB.
  VBE and IE for constant VCE.

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Analog Electronics
When VGS = 0 V, a JFET is

  saturated.
  an analog device.
  cut off.
  an open switch.

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Analog Electronics
The room temperature resistivity of pure silicon is

 3000
 50
 6
 300

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Analog Electronics
A 741 C has

All of these
  an input impedance of 2 MΩ.
  an output impedance of 75 Ω.
  a voltage gain of 100,000.

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Analog Electronics
A zener diode voltage regulator has load requirement of 12 V and 2 Amp. The zener diode's minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is maximum efficiency of circuit?

 34.3 %.
 66.3 %.
 45.5 %.
 52.8 %.

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