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Analog Electronics

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

 1/4
 1
 1/3
 1/2

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Analog Electronics
If the collector resistor is open, the collector voltage is

 unknown.
  low.
 unchanged.
 high.

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Analog Electronics
A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are

25 Ω & 20 %
5 Ω & 16.7 %
5 Ω & 20 %
25 Ω & 16.7 %

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Analog Electronics
Generally, the gain of a transistor amplifier falls at high frequencies due to the

Coupling capacitor at the output
Internal Capacitance of the device
Coupling capacitor at the input
Skin effect

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Analog Electronics
If a transistor operates at the middle of the load line, a decrease in the base resistance will move the Q point

 off the load line.
 nowhere.
 down.
  up.

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Analog Electronics
What will be the result if pentavalent impurity is added to pure germanium or silicon ?

 Intrinsic semiconductor
None of these
 P-type semiconductor
 N-type semiconductor

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