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

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

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Analog Electronics
A Semiconductor has a

 Constant Temperature coefficient of resistance
None of these
 Positive Temperature coefficient of resistance
 Negative Temperature coefficient of resistance

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Analog Electronics
The typical input stage of an opamp has a

  single - ended input and single-ended output.
  differential input and differential output.
  differential input and single - ended output.
  single - ended input and differential output.

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