STUPIDSID
1 (a)
With a suitable diagram discuss the concept of loading and how to avoid it.
5 M
1 (b)
Draw the circuit of practical Integrator and its output waveforms.
5 M
1 (c)
Draw the circuit of Zero crossing detector and its output waveforms.
5 M
1 (d)
Explain the significance of all-pass filters.
5 M
2 (a)
Explain successive approximation analog to digital converter with diagram.
10 M
2 (b)
Draw and explain circuit diagram of absolute value circuit using op-amp. Discuss its advantages over traditional diode rectifier.
10 M
3 (a)
Draw and explain the operation of Temperature compensated Log amplifier.
10 M
3 (b)
What are the advantages of active filters over passive filters. Design a second-order band pass filter for given FH=2KHz, FL=300Hz and Pass band gain=4.
10 M
4 (a)
Design and Explain operation of Astable Multivibrator using IC555 for 60% duty cycle.
10 M
4 (b)
A sensor output a range of 20.0 to 250m Vas a variable varies over its range. Develop signal conditioning so that this becomes 0 to 5V. The circuit must have very high input impedance.
10 M
5 (a)
A RTD has α()=0.005/°C, R=500Ω, and dissipation constant of PD=30m W/°C at 20°C. The RTD is used in a bridge circuit with R1=R2=500Ω and R3 a variable resistor used to null the bridge. If the supply is 10 V and the RTD is placed in a bath at 0°C, find the value of R3 to null the bridge.
10 M
5 (b)
Draw and explain the principle and construction of thermocouple. What is the signal conditioning associated with it.
10 M
Write short notes on (any four):
6 (a)
Sample and Hold circuit.
5 M
6 (b)
Phase Locked Loops.
5 M
6 (c)
Variable voltage regulator
5 M
6 (d)
Data Acquisition System.
5 M
6 (e)
Flash type ADC.
5 M
6 (f)
SMPS.
5 M
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