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Analog Electronics

Analog Electronics
Assume that diode D1, D2 in figure are ideal diodes. The value of current is mcq-diagram

 1 mA.
 0.5 mA.
 2 mA.
 0 mA.

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Analog Electronics
Which is the third region where no charge carriers are present when n-type and p-type are attached together ?

 Forward region
None of these
 Reversed region
 Depletion region

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Analog Electronics
An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are

fT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz
fT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz
fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz
fT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz

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Analog Electronics
Conduction electrons have more mobility than holes because they

 are free
 have negative charge
 need less energy to move them
None of these

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Analog Electronics
If the base resistor is open, what is the collect current?

 2 mA.
 10 mA.
  0 mA.
 1 mA.

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Analog Electronics
The properties of JFET resemble those of

  NPN transistors.
  UJT.
  PNP transistors.
  thermionic valves.

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