This document contains 30 multiple choice questions about various topics in biomedical instrumentation and medical imaging. The questions cover topics like resting potential, action potential, biosensors, tomography, electrocardiography, and more. For each question, the possible multiple choice answers are provided along with an explanation of the correct answer. The questions assess understanding of fundamental concepts and terminology used in biomedical instrumentation and medical imaging domains.

1. Bio Medical Instrumentation
MCQ
ER. FARUK BIN POYEN, Asst. Professor
DEPT. OF AEIE, UIT, BU, BURDWAN, WB, INDIA
faruk.poyen@gmail.com

2. 1. Which of the following is used as display device to produce permanent record of data?
 a) 7 segment display
 b) Pen recorder
 c) Electrode
 d) Needle
Answer: b
 Explanation: Pen recorder is the display device used as a display device to produce permanent record of
data.
2. Resting potential has a magnitude of _____________
 a) 70 mV
 b) -70 mV
 c) 20 mV
 d) -20 mV
Answer: b
 Explanation: Resting potential has a magnitude of -70 mV.
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3. 3. Which of the following represents action potential?
 a) 70 mV
 b) -70 mV
 c) 20 mV
 d) -20 mV
Answer: c
 Explanation: Action potential has a magnitude of 20 mV.
4. Signals generated by body signal is known as _______________
 a) Ionic voltage
 b) Monitory signal
 c) Magnetic signal
 d) None of the mentioned
Answer: a
 Explanation: Electric signals generated by human body are known as ionic voltage or bio electric potential.
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4. 5. Resting potential is always negative.
 a) True
 b) False
Answer: a
 Explanation: Value of resting potential is always negative.
6. Which of the following shows resting potential?
 a) Depolarized cell
 b) Polarized cell
 c) Ionic cell
 d) Resting cell
Answer: b
 Explanation: Body cell which showing resting potential is known as polarized cell.
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5. 7. Which of the following represents re polarization in action potential wave?
 a) Zero slop
 b) Positive slop
 c) Negative slop
 d) None of the mentioned
Answer: c
 Explanation: Negative slop region in action potential wave represents re polarization.
8. Process of changing resting potential to action potential is known as _______________
 a) Polarization
 b) Re polarization
 c) Depolarization
 d) Uni polarization
Answer: c
 Explanation: Depolarization is the process of changing from resting potential to action potential.
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6. 9. Action potential is varying over cell.
 a) True
 b) False
Answer: b
 Explanation: For every cell action potential is always same which is described by all or nothing law.
10. Which of the following have higher action potential propagation rate?
 a) Nerve cell
 b) Heart muscle
 c) Thigh muscle
 d) All of the mentioned
Answer: a
 Explanation: Nerve cell have higher rate of propagation for action potential( 20-140 m/s).
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7. 11. SAW stands for ________________
 a) Sound actuated wave
 b) Surface acoustic wave
 c) Sound activated wave
 d) Surface activated wave
Answer: b
 Explanation: SAW stands for surface acoustic wave.
12. Quartz can be used as bio sensors.
 a) True
 b) False
Answer: a
 Explanation: In QCM, piezoelectric nature of quartz is utilized.
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8. 13. Direction of acoustic wave in QCM will be ______________
 a) Same as crystal surface
 b) Opposite to crystal surface
 c) Perpendicular to crystal surface
 d) None of the mentioned
Answer: c
 Explanation: In QCM, direction of acoustic wave will be perpendicular to crystal surface.
14. Acoustic wave in QCM meets minimum impedance when thickness of device is __________________
 a) Equal to wavelength of acoustic wave
 b) Product of Half of wavelength of acoustic wave
 c) Product of quarter of wavelength of acoustic wave
 d) None of the mentioned
Answer: b
 Explanation: When thickness of device is product of half of wavelength of acoustic wave, it meets minimum
impedance.
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9. 15. Which of the following is most preferred?
 a) QCM and SAW sensor
 b) QCM and BAW sensor
 c) QCM
 d) All of the mentioned
Answer: a
 Explanation: Quartz crystal micro balance and surface acoustic wave sensors are used, since it provides
impressive sensitivity.
16. Magnetic bio sensor is wide used for____________
 a) Blood detection
 b) DNA detection
 c) ECG detection
 d) EMG detection
Answer: b
 Explanation: Magnetic bio sensors are used for DNA detection
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10. 17. QCM stands for _______________
 a) Quartz crystal micro balance
 b) Quality control balance
 c) Quartz crystal magnifier
 d) None of the mentioned
Answer: a
 Explanation: QCM stands for Quartz crystal micro balance which uses quartz crystals.
18. Changes in resonant frequency of QCM is proportional to _____________
 a) Mass accumulated in crystal
 b) Crystal used
 c) Time of usage
 d) None of the mentioned
Answer: a
 Explanation: Deposition of thin film on crystal surface causes change in resonant frequency of device.
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11. 19. BAW stands for __________________
 a) Bulk acoustic wave
 b) Barrier acoustic wave
 c) Barrier avoiding wave
 d) Bulk activated wave
Answer: a
 Explanation: BAW stands for Bulk Acoustic Wave.
20. Non contacting type bio sensors are ____________
 a) Radiation type
 b) Electromagnetic type
 c) Radiation or electromagnetic type
 d) None of the mentioned
Answer: c
 Explanation: Bio sensors may be contacting or non-contacting type. Non contacting type sensors may be
electromagnetic or radiation type.
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12. 21. CT stands for _____________
 a) Controlled tomography
 b) Computerized tomography
 c) Converted tomography
 d) Comparison tomography
Answer: b
 Explanation: CT is the short form of computerized tomography.
22. Who invented Tomography?
 a) Radon
 b) Josef Capek
 c) Curie
 d) Johnson
Answer: a
 Explanation: In 1917, Radon invented tomographic machine.
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13. 23. Which of the following is used in tomography?
 a) X ray
 b) Gamma ray
 c) UV ray
 d) IR radiation
Answer: a
 Explanation: X ray is used in tomography to get interior data of a body.
24. ECT stands for ________________
 a) Electro cardio tomography
 b) Electro capacitive tomography
 c) Electro converging tomography
 d) Electro Cornial tomography
Answer: b
 Explanation: ECT or electro capacitive tomography is a method of tomography.
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14.  25. Which of the following is not possible?
 a) ECT
 b) ERT
 c) Fiber optic tomography
 d) None of the mentioned
Answer: d
 Explanation: ECT, ERT, and fiber optic tomography’s are different methods for tomography.
26. How many conductors are used in ERT?
 a) 10
 b) 12
 c) 14
 d) 16
Answer: d
 Explanation: Normal number of conductors in ERT is 16.
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15.  27. EMT is working on the basis of __________________
 a) Mutual inductance
 b) Current flow
 c) Self inductance
 d) None of the mentioned
Answer: a
 Explanation: Electro-magnetic tomography is based on complex mutual inductance.
 28. Fiber optic tomography is used in particle size ______________
 a) Less than 10um
 b) Less than 100um
 c) Up to 1000nm
 d) Up to 100nm
Answer: b
 Explanation: Fiber optic tomography is used in particle size less than 100um.
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16.  29. Attenuation rate may vary in fiber optic tomography.
 a) True
 b) False
Answer: a
 Explanation: Attenuation rate in fibre optic tomography vary according to particle size and nature.
 30. A femto farad is equal to ____________
 a) 10-15 farad
 b) 10-10 farad
 c) 10-5 farad
 d) 1010 farad
Answer: a
 Explanation: One femto farad is equal to 10-15 farad.
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17. References:
http://www.sanfoundry.com/instrumentation-transducers-question-answers-tomography/
http://www.sanfoundry.com/1000-instrumentation-transducers-questions-answers/
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