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Analog Electronics

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

 shorted to ground.
 open.
  high.
 low.

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

  high.
 unknown.
 unchanged.
 low.

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Analog Electronics
If (211)X = (152)8, then the value of base x is

 6
 7
 5
 9

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Analog Electronics
N-type extrinsic semiconductor is obtained by adding

 trivalent impurity
 tetravalent impurity
 pentavalent impurity
All of these

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Analog Electronics
The voltage follower has a

  closed - loop bandwidth of zero.
  large closed - loop output impedance.
  closed - loop voltage gain of unity.
  small open - loop voltage gain.

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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

CMRR
Slew rate
Bandwidth
Open-loop gain

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