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Analog Electronics

Analog Electronics
The current gain of a BJT is

gm / r0
gm r0
gm rπ
gm /rπ

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Analog Electronics
The major advantage of a photo transistor as compared to a photo diode is its

 durability.
 AC operation.
  increased sensitivity.
 response to higher frequencies.

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Analog Electronics
Diode is also called as:

 Reactance
 Rectifier
 Amplifier
 Resistance

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Analog Electronics
Depletion region of a p-n junction is formed

 During Reverse bias
 During Heating
 During Forward bias
 During Manufacturing

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Analog Electronics
In a RC phase shift oscillator, the minimum number of R-C networks to be connected in cascade will be

 one.
 three.
 two.
 four.

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Analog Electronics
Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250, are cascaded. The open circuit voltage gain of combined amplifier is

102dB
49dB
98dB
51dB

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