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Analog Electronics

Analog Electronics
Which impurity is added into semiconductor to increase its conductivity ?

 extrinsic
None of these
 doping
 intrinsic

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Analog Electronics
When there is no base current in a transistor switch, the output voltage from the transistor is

  high.
 low.
 unchanged.
 unknown.

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Analog Electronics
MOSFET can be used as a

Current controlled capacitor
Current controlled inductor
Voltage controlled inductors
Voltage controlled capacitor

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Analog Electronics
Donors to a semiconductor material is

 Tetravalant
 Trivalant
 Pentavalant
 Divalant

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Analog Electronics
The encapsulation of transistor is necessary for

Preventing photo-emission effects
Avoiding loss of free electrons
Preventing radio interference
Mechanical ruggedness

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Analog Electronics
The input impedance of the base of an emitter follower is usually

 low.
  high.
 shorted to ground.
 open.

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