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00000CS207121902

Find the overall gain of a negative feedback amplifier with a gain of 200 and a
feedback factor of 0.1

What do you mean by Barkhausen criteria? How is it satisfied in a Wein Bridge
oscillator?

Draw the circuit of a monostable multivibrator using transistors. Identify the
operating regions of the transistors.

PART 0
Answer any two full questions, each carries 9 marks.
Analyse the biasing arrangement shown below and indicate its operating point

on the load line. Given ४८८ = 18 V, Ic = Ie = 4.1 mA, ೫1 = 33 KQ, 1२2 = 12
KQ, Re = 1.2 KQ and Re = 1 KQ.

1
Re |]
3 ۴
९1 = 332
9 २2 = 2
Re = 1,210
82 pz |] Re = 118
४८८ = 18 ४

Also identify the function of each component in this circuit.
What will be the effect of negative feedback on the gain and bandwidth of an
amplifier?
With neat sketches, explain the working of a common source MOSFET
amplifier.
Derive an expression for frequency of oscillations of a Hartley oscillator.
Draw and explain the circuit of a bistable multivibrator using transistors. Quote
a few applications of bistable multivibrators.
PART E
Answer any four full questions, each carries 10 marks.
Given a 10 V peak to peak sine wave input, design a circuit using OPAMPS to

obtain the following output waveform:

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