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Analog Electronics

Analog Electronics
The current gain of a BJT is

gm rπ
gm /rπ
gm / r0
gm r0

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Analog Electronics
CMOS devices use

  DMOS devices.
  bipolar transistors .
  class A operation.
  complementary E - MOSFETs.

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Analog Electronics
The encapsulation of transistor is necessary for

Preventing photo-emission effects
Avoiding loss of free electrons
Preventing radio interference
Mechanical ruggedness

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Analog Electronics
What is the charge of mobile charge carriers of holes ?

 No charged
None of these
 Negatively charged
 Positively charged

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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
1/5KΩ
5KΩ
11KΩ

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Analog Electronics
If the collector resistor opens in a base-biased circuit, the load line will become

  horizontal.
 vertical.
 useless.
 flat.

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MORE MCQ ON Analog Electronics

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