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Analog Electronics

Analog Electronics
Which of the following is a semiconductors material ?

 Ge
 GaAs
 All the above
 Si

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Analog Electronics
Single phase, 230 V, 1 KW heater is connected acrose single phase 230 V, 50 Hz supply through a diode. The power delivered to the heater element

 1000 W.
 100 W.
 None of above.
  500 W.

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Analog Electronics
In which mode of BJT operation are both junction forward biased

  saturation.
  reverse active.
  active.
  cut off.

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Analog Electronics
In a pnp transistor, the major carriers in the emitter are

 free electrons.
  holes.
 both.
 neither.

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Analog Electronics
The base - emitter voltage is usually

 none of these.
  less than the base supply voltage.
 equal to the base supply voltage.
 more than the base supply voltage.

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Analog Electronics
The following relationship between α and β are correct except

  α = β / (1 - β).
  1 - α = 1 / (1 + β).
  β = α / (1 - α).
  α = β / (1 + β).

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