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Analog Electronics

Analog Electronics
A 555 IC is used to produce

 counter
 byte
 register
 clock

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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 %.
 52.8 %.
 45.5 %.

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Analog Electronics
Energy gap of semiconductor is approx

 1 eV.
 > 8 eV .
 5 - 8 eV.
 0 eV.

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Analog Electronics
The voltage divider biasing circuit is used in amplifiers quite often because it

  makes the operating point almost independent of β.
  reduces the cost of the circuit.
  reduces the DC base electric current.
  limits the AC signal going to base.

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Analog Electronics
What will happen if doping of an intrinsic semiconductor with pentavalent impurity atom ?

None of these
 Fermi level fall
 Fermi level not change
 Fermi level raises

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Analog Electronics
A differential amplifier is invariably used in the i/p stage of all OP-amps.This is dome basically to provide the OP-amps with a very high

Open-loop gain
Slew rate
CMRR
Bandwidth

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