23044-TRANSDUCERS AND SIGNAL CONDITIONERS IMPORTANT QUESTIONS

KUMARAN POLYTECHNIC COLLEGE

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

23044-TRANSDUCERS AND SIGNAL CONDITIONERS

STAFF-IN-CHARGE: N.SURESH KUMAR

IMPORTANT QUESTIONS

UNIT-I

PART-A

1.     What are the two parts of transducer?

2.     Compare primary and secondary transducers.

3.     What is load cell?

4.     List the advantages of digital encoder.

5.     Define transducer

6.     Mention the types of transducers.

7.     Give an example for Active transducer.

8.     Give two examples of Primary sensing elements

9.     Give an example of passive transducer.

10.                        State any two advantages of transducer.

11.                        Define thermistor.

12.                         What are the types of thermistor.

PART-B

1.     Necessity of transducer. (6)

2.     Primary and secondary transducers. (6)

3.     Explain the construction and operation of metal resistive thermometer.(6)

4.     Explain load cell. (6)

5.     Briefly explain the classification of transducers. Give example in each. (6)

6.     Write short notes on Bourden tubes and bellows. (6)

7.      State the necessity and advantages of transducers . (6)

8.     Discuss about Thermistors. (6)

9.     With neat sketch, explain the operation of Digital encoding transducer. (12)

UNIT-II

PART-A

1.     What is the operating principle of resistive transducer?

2.     State the application of capacitive transducers.

3.     What is inductive transducer?

4.     Expand RVDT.

5.     What is thermistor?

6.     Expand LVDT.

7.     What is proximity sensor?

8.     State any two applications of capacitive transducer

9.     What is proximity transducer?

10.                        State any two applications of strain gauge.

11.                        State the uses of LVDT.

PART-B

1.     Explain how strain gauge is used in measurement of displacement. (6)

2.     Discuss about capacitive transducer applications. (6)

3.     Explain measurement of pressure using inductive transducers. (6)

4.     Explain LVDT with neat sketch. (6)

5.     What is an Inductive transducer? Discuss how it is used in the pressure measurement. (12)

6.     What is the principle of capacitive transducers? How it is used in liquid level measurement. (12)

7.     With neat sketches explain the operation of RVDT. State it’s applications.(12)

8.     Explain strain gauge and its types.(6)

UNIT-III

PART-A

1.     Give the measurement range of temperature of thermocouple transducer.

2.     What is photoconductive transducer?

3.     Which device is used to measure the angular velocity?

4.     Mention the principle of solar cell.

5.     Distinguish between piezoelectric transducer and photo electric transducer.

6.     What do you mean by thermocouple?

7.     State the principle of photo conductive transducer.

8.     What is the basic principle of piezo electric transducer?

9.     Name the devices used for measurement of Radiation.

10.                        What do you understand by Hall effect?

PART-B

1.     Briefly explain construction and working principle of thermocouple with a neat diagram. (12)

2.     Explain the construction and working of Geiger Muller tube in radiation measurement. (12)

3.     Draw and explain the measurement of angular velocity using tacho generator.(6)

4.     Write short notes on photo voltaic transducer. (6)

5.     Explain the construction and working of Piezo electric transducer with neat sketch.(12)

6.     Explain about Hall effect Transducer. (6)

UNIT-IV

PART-A

1.     Define Op amp.

2.     Define CMRR.

3.     Draw integrator circuit using Op amp.

4.     Name two types of comparators.

5.     Define slew rate.

6.     Which IC is used as op. amp?

7.     What is the value of bandwidth for ideal op.amp?

8.     Write the formula to find output voltage of adder circuit using op.amp.

9.     Define signal conditioning.

10.                        List any two characteristics of ideal op. amp

11.                        What are the two types of comparators?

PART-B

1.     Explain AC signal conditioning with block diagram. (6)

2.     Explain with neat diagram Op amp as integrator. (6)

3.     Explain the working of comparator with neat diagram. (6)

4.     Explain the working of voltage to current converter using Op amp. (6)

5.     Explain the inverting mode operation of op. amp and derive equation for gain. (6)

6.     Show how op. amp can be used as an adder. (6)

7.     Show how op. amp is used as differential amplifier .(6)

8.     Explain the non inverting mode operation of op. amp. Derive equation for gain. (6)

9.     Show how op.amp can be used as a differentiator.(6)

UNIT-V

PART-A

1.     List different filters using Op amp.

2.     Name the filter circuit that is used as differentiator.

3.     What is clamper?

4.     What is R-2R ladder network?

5.     Name the filter circuit that is used as an integrator.

6.     What do you mean by zero crossing detector.

7.     How many op. amps are used in Instrumentation amplifier?

8.     What is clipper?

9.     Which filter is used as differentiator?

10.                        What are the elements in Bridge amplifier?

PART-B

1.     Instrumentation amplifier using Op amp. (6)

2.     Active filters using Op amp. (6)

3.     Wien bridge oscillator using OP amp. (6)

4.     Zero crossing detector. (6)

5.     With neat circuit diagram explain instrumentation amplifier using op. amp.(12)

6.     Draw the circuit of R. 2R ladder network DAC and explain its operation.(6)

7.     With neat circuit explain the operation of Successive approximation A/D converter using op.amp. (12)

8.     With neat circuit and waveforms explain the operation of Zero crossing Detector using op. amp. (12)