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Analog Electronics

Analog Electronics
Semiconductor material is

 Pentavalent
 Trivalent
 Tetravalent
 Bilateral

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Analog Electronics
Which of the following amplifier circuit using junction transistor has the best gain?

All have the same gain
Common base
Common emitter
Common collector

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Analog Electronics
Electron mobility is defined as

 Drift velocity per unit field
 Diffusion velocity per unit field
 the movement of electrons
None of these

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Analog Electronics
Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250, are cascaded. The open circuit voltage gain of combined amplifier is

102dB
49dB
51dB
98dB

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Analog Electronics
When a reverse bias is applied to a diode, it will

  increases the majority carrier an electric current greatly.
  raise the potential barrier.
  lower the potential barrier.
  none of these.

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Analog Electronics
A 555 IC is used to produce

 byte
 counter
 clock
 register

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