M.Sc. (Semester III) (CBCS) Examination Oct/Nov-2017
Electronics
MEDICAL INSTRUMONTATION
Day Date: Saturday, 25-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Q no. 1 Q. no. 2 are compulsory.
Attempt any three questions from Q. no. 3 to 7
Attempt five questions.
Figures to the right indicates full marks.
Q.1 Choose the correct Answer: 08
The contact impedance is than the electrical impedance
of the body tissue measured beneath the skin.
Less Greater
Equal None of these
The heart rate is controlled by system and partially by
activity.
Automatic nervous, harmonic
Harmonic, automatic nervous
Controlled nervous, harmonic
Harmonic, controlled nervous
The EEG is the record of potential generated by
Skin Brain
Both a and b None of these
The cell membrane in excited state impedes the entry of
Ions.
Na CI
K P
The type of electrode is used for EMG measurement.
Limb Needle
Surface Floating
The ultrasonic frequencies utilized for medical instrumentation
ranges from Hz.
1 to 15 K 1 to 15 M
1 to 15 G 1 to 20 G
The pH electrode emf changes by Volt per 1 0C.
0.02 micro 0.02m
0.02 m 0.2 micro
The m V is the resting potential of the cell.
+20 +90
-90 -20
Page 2 of 2
SLR-E-29
State true or false: 06
The body fluid is ionic.
The Capillaries are the smallest and last up to the level of blood
vessels.
Pre gelled disposable electrodes generally suffers from motion
artefacts.
The differential amplifier always provides the protection against
leakage currents.
The Veins are the walled and carry de-oxygenated blood.
The positive potential of the cell membrane during excitation is action
potential.
Q.2 Attempt any two of the following: 10
Write note on pO2 sensor.
Explain the concept of electrical impedance.
Write note on Blood flow measurement.
Discuss the parameters of the PQRST complex. 04
Q.3 Explain in the detail leads of Electroencephalograph. 08
Write note in X-ray Machine. 06
Q.4 With suitable diagram discuss the principle of Blood-Glucose sensors. 08
What do you mean by heart action? 06
Q.5 With the help of suitable diagram describe cardio-vascular system. 08
Explain General architecture of recording system. 06
Q.6 Explain the principle and block diagram of NMR imaging system. 08
Write note on heart sound. 06
Q.7 Write note on pH electrode. 08
Explain Blood gas Analyser. 06