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(Please write your Roll No. immediately) |
Roll No. .................................. |
Fourth Semester [B.Tech] - May 2005
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Paper Code : ETEC – 204 Subject : Analog Electronics - II |
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Time : 3 Hours |
Maximum Marks : 75 |
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Note : Attempt any 5 questions in all. |
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Q1 |
( a ) |
Using neat diagram, derive an expression for CMRR of dual input
balanced output (DIBO) differntial amplifier. |
8 |
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( b ) |
Explain the principle of:
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7 |
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Q2 |
( a ) |
Design a 4th order Butterworth LPF with cutoff frequency of 1 KHz |
8 |
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( b ) |
Design a BPF with a gain of Ao = 34 dB,
center frequency fo = 180 Hz and 3 dB bandwidth of 18 Hz. |
7 |
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Q3 |
( a ) |
Derive an expression for frequency of oscillations of RC phase
shift oscillator. |
8 |
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( b ) |
Explain the principle of various types of current mirrors. |
7 |
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Q4 |
( a ) |
Draw the internal diagram of an OTA and derive an expression for
its voltage gain. Explain how an oscillator can be made by using an
OTA. |
8 |
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( b ) |
Give the functional diagram of voltage to current converter and
explain its operation. |
7 |
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Q5 |
( a ) |
Give the classification of various types of power amplifiers. Show
that for a class-B push-pull amplifier,
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10 |
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( b ) |
Using OP-AMP explain the working of:
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5 |
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Q6 |
( a ) |
Using a neat circuit diagram, explain the operation of astable multivibrator (AMV). Find the expression for the frequency of oscillations. |
8 |
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( b ) |
Explain the principle of full-wave precision rectifier. Derive an expression for output voltages Vo. |
7 |
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Q7 |
( a ) |
Explain the working principle of PLL. Define various terms associated with it and give its typical applications. |
8 |
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( b ) |
How a VCO can be used used for the generation of:
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7 |
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Q8 |
Explain the principle of: |
15 |
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( a ) |
Tuned amplifier |
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( b ) |
Instrumentation amplifier |
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( c ) |
Level shifters |
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