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Analog Electronics

Analog Electronics
What is the range of energy band gap of semiconductors ?

 14-15 ev
 1-3 ev
 0 ev
 10-15 ev

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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

98dB
51dB
102dB
49dB

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Analog Electronics
In MOSFET devices the N-channel type is better the P-channel type in the following respects

  it has better noise immunity.
  it has better drive capability.
  it is TTL compatible.
  it is faster.

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Analog Electronics
A zener diode

  has a constant voltage in the breakdown region.
  has a barrier potential of 1 V.
  is forward biased.
  is a battery.

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Analog Electronics
MOSFET requires

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

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Analog Electronics
The most commonly used semiconductor is

 Sulphur
 Germanium
 Silicon
 Carbon

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