Rajiv Gandhi University of Health Sciences, Karnataka
First Year Bachelor in Prosthetics and Orthotics Degree Examination - OCT-2019
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Time: Three Hours Max. Marks: 80 Marks
BASIC ELECTRONICS - (RS3)
Q.P. CODE: 2966
Your answers should be specific to the questions asked
Draw neat, labeled diagrams wherever necessary
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ESSAYS TYPE (Answer any Two) 2 x 10 = 20 Marks
- What is an OpAmp? What are its characteristics and applications?
- With neat diagram explain the working of the thermocouple.
- What is EMG? List uses of EMG signals in myoelectric Prosthesis.
SHORT ESSAYS TYPE (Answer any Six) 6 X 5 = 30 Marks
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- List the different types of capacitors and what are their applications
- Write the ac voltage sine waveform and mark and define peak value, period and rms value.
- With characteristic curves for the transistor explain the operating regions.
- List the SI Base unit, the basic quantity, name and symbol.
- Explain the colour coding in resistors with example.
- What is the need for bias? Explain the bias circuit for a NPN or PNP transistor.
- Explain the operation of an oscillator.
- Explain the working of sound transducers.
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SHORT ANSWERS TYPE (Answer any Ten) 10 x 3 = 30 Marks
- State ohms law and Kirchhoff’s laws.
- What is a strain gauge? What are its applications?
- What are active and passive devices? Give examples.
- With energy band diagram explain the differences between insulator, semiconductor and conductor.
- A dc motor draws a current of 15 amps when connected across a 230 V dc supply. Calculate the power drawn and the value of load resistance.
- What is total resistance if 10 ohm, 15 ohm, 25 ohms resistors are given and (i)connected in series (ii) connected in parallel.
- What is a transformer? Write the relation between primary and secondary voltages and currents.
- What is a transducer, sensor and actuator?
- What are the two types of feedback and their applications?
- What is the need for earthing? List the different types of earthing.
- What are surface electrodes and what are its applications?
- What is the difference between fuse and MCB?
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