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Analog Electronics

Analog Electronics
Which of the following is Pentavalent impurity?

 indium
 gallium
 boron
 antimony

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Analog Electronics
The action of JFET in its equivalent circuit can best be represented as a

Current controlled Current source
voltage controlled current source
Current controlled voltage source
Voltage controlled voltage source

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Analog Electronics
A JFET can operate in

  none of these.
  enhancement mode only.
  depletion mode only.
  depletion and enhancement mode only.

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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.
  0.200.
 0.242.
 0.220.

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Analog Electronics
Example of donor atom is

 Germinium
 Silicon
 Both A and B
 Antimony

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Analog Electronics
If the load resistance increases in a zener regulator, the zener current

  decreases.
  Increases.
  equals the source voltage divided by series resistance.
  stays the same.

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