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Analog Electronics

Analog Electronics
Semiconductor Diode is used as

 a modulator
 a rectifier
 an oscillator
 an amplifier

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Analog Electronics
The expression for frequency of oscillations of a RC phase shift oscillator is

 f = 1 / (2π√RC)
None of these
 f = 1 / (2π√R(C1 + C2))
 f = 1 / (2π RC√6)

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Analog Electronics
A forward potential of 10 V is applied to a silicon diode. A resistance of 1KΩ is also in series with the diode. The electric current is

  9.3 mA.
  0.
  0.7 mA.
  10 mA.

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Analog Electronics
MOSFET requires

 A large input current and high voltage.
  Only small input current.
 None of these.
 A large input current.

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Analog Electronics
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is

1/11KΩ
11KΩ
5KΩ
1/5KΩ

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Analog Electronics
The main factor which makes a MOSFET likely to breakdown during the normal handling

  high input resistance.
  both (A) and (C).
  high leakage current.
  very low gate capacitance.

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