Other Bachelor Degree-Bachelor of Audiology and Speech Language Pathology 1st Year BIOMEDICAL INSTRUMENTATION AND ACOUSTICS (Kerala University of Health Sciences-2013)

Q.P.Code: 104015                                                      Reg. No.:…………………
                          First Year BASLP Degree Examinations - September 2013
                             BIOMEDICAL INSTRUMENTATION AND ACOUSTICS
Time : 3 hrs                                                                           Max marks : 80

• Answer all questions
• Draw diagram wherever necessary

Essays (4x10=40)

1. Explain the working principle of an immittance audiometer with a neat block diagram.
2. Explain how sound is recorded on to a magnetic tape with supporting diagrams.
3. Define sound pressure level and explain how it is calculated & measured. State the unit with which it is measured.
4. Explain the working of :
● Potentiometer
● Transistor
● Semiconductor diode
● Servo controlled stabilizer

Short notes (5x5=25)

5. FIR and IIR systems
6. LCD
7. Computer peripherals
8. Artificial larynx
9. Acoustic impedance

Answer briefly (5x3=15)

10. Illustrate how a digital signal is converted to analog signal.
11. Role of a pre-amplifier and a power amplifier
12. Role of a hard disk in the functioning of personal computer
13. Illustrate the principle of working of a condenser microphone
14. Highlight the need of an enclosure for a loudspeaker.
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