Analog Electronics
A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ. At the frequency of 4KHZ,the o/p voltage will be

2v
2.8v
1v
1.4v

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Analog Electronics
The ICBO is the electric current that flows when some DC voltage is applied

  in the reverse direction to the collector junction with emitter open.
  in the forward direction to the collector junction with emitter open.
  in the forward direction to the emitter junction with collector open.
  in the reverse direction to the emitter junction with collector open.

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