STUPIDSID
Answer the following:
1 (a)
What are precision rectifiers? How are they superior to traditional rectifiers.
5 M
1 (b)
Briefly explain the concept of Loading with example.
5 M
1 (c)
Explain V-F converter.
5 M
1 (d)
What are the four characteristics of three terminal IC regulator.
5 M
2 (a)
Explain Dual slope Analog-to-Digital Converter with diagram and waveform.
10 M
2 (b)
Explain operation of Astable Multivibrator using IC 555 with a neat circuit diagram and waveforms.
10 M
3 (a)
Explain the constructon and working of 3-opamp Instrumentation amplifier. Give any one of its applications in detail.
10 M
3 (b)
What the advantages of Active filters. Design a second order High Pass Butterworth filter with a cut-off frequency of 2 KHz.
10 M
4 (a)
A Cds cell has a dark resistance of 100 kΩ and a resistance in a light beam of 30 kΩ. The cell time constant is 72 ms. Devise a system to trigger a 3-V comparator within 10 ms of the beam interruption.
10 M
4 (b)
Explain Optical encoder signal conditioning for linear displacement and linear velocity applications with suitable diagram.
10 M
5 (a)
An RTD has ao=0.005/°C; R=500 Ω and Dissipation constant of PD=30 m W/°C at 20°C. The RTD is used in a bridge circuit with R1=R2=500 Ω and R3 is a variable resistor used to null the bridge. If supply voltage is 10V and RTD is placed in bath at 0°C, find the value of R3 to null the bridge.
12 M
5 (b)
A Solid state pressure sensor that outputs 25 mV/kPa for a pressure variation of 0.0 to 25 kPa will be used to measure the level of a liquid with a density of 1.3*103. What voltage output will be expected for level variations from 0 to 2.0m? What is the sensitivity for level measurement expressed in mV/cm?
8 M
Write short notes on:
6 (a)
Sample and Hold circuit.
5 M
6 (b)
Phase Locked Loops.
5 M
6 (c)
Power supply design using 78xx.
5 M
6 (d)
SMPS.
5 M
More question papers from Signal Conditioning Circuit Design