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Analog Electronics

Analog Electronics
The current gain of a BJT is

gm rπ
gm / r0
gm /rπ
gm r0

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Analog Electronics
What is the most important fact about the collector current?

  It approximately equals the emitter current.
 It equals the base current divided by the current gain.
 It is small.
 It is measured in milliampere.

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Analog Electronics
The feedback factor of a Wien bridge oscillator using Op-Amp is

 1/3
 1
 1/4
 1/2

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Analog Electronics
The per unit impedance of a synchorous machine is 0.242. If base voltage is increased by 1.1 times, then per unit value will be

 0.266.
 0.242.
 0.220.
  0.200.

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Analog Electronics
For audio frequency applications, the popular oscillator used is

 Phase shift oscillator
 Hartley oscillator
 Crystal oscillator
 Wien bridge oscillator

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Analog Electronics
When Semiconductor materials is heated its resistance

 remains constant
 increases
 decreases
None of these

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MORE MCQ ON Analog Electronics

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