MCQOPTIONS
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MCQOPTIONS
This section includes 46 Mcqs, each offering curated multiple-choice questions to sharpen your Biomedical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
From equipment point of view, the respiratory system in the human body is a system. |
| A. | hydraulic |
| B. | pneumatic |
| C. | mechanical |
| D. | electrical |
| Answer» C. mechanical | |
| 2. |
After a cell is stimulated, a finite period of time is required for the cell to return to its pre-stimulus state. This period is known as |
| A. | restoration period |
| B. | refactory period |
| C. | regain period |
| D. | regenerative period |
| Answer» C. regain period | |
| 3. |
In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters? |
| A. | Transmittance |
| B. | Absorption |
| C. | Wavelengths |
| D. | Volume |
| Answer» B. Absorption | |
| 4. |
Which of the following electrode is manufactured by circumferential application of heat to a small area of glass tubing and pulling the glass when it gets soft? |
| A. | macro metallic electrodes |
| B. | micro metallic electrodes |
| C. | micro pipette |
| D. | surface electrodes |
| Answer» D. surface electrodes | |
| 5. |
Deep-seated electrodes indicates the electric potential difference arising the living tissues or cells. |
| A. | inside |
| B. | outside |
| C. | around |
| D. | adjacent |
| Answer» B. outside | |
| 6. |
Compute the quality factor of the wide band-pass filter with high and low cut-off frequencies equal to 950Hz and 250Hz. |
| A. | 0.278 |
| B. | 0.348 |
| C. | 0.696 |
| D. | 0.994 |
| Answer» D. 0.994 | |
| 7. |
To achieve optimum performance and to enable the relationship of change in resistance with the volume of the cell to hold good, it is recommended that the ratio of the aperture length to the diameter of the aperture should be |
| A. | 75:1 |
| B. | 0.75:100 |
| C. | 0.75:1 |
| D. | 0.5:10 |
| Answer» D. 0.5:10 | |
| 8. |
The ratio of the radiant power transmitted by a sample to the radiant power incident on the sample is known as |
| A. | Absorbance |
| B. | Transmittance |
| C. | Optical density |
| D. | Photometric concentration |
| Answer» C. Optical density | |
| 9. |
method is based on the absorption of electromagnetic radiation in the visible, ultraviolet and infrared ranges. |
| A. | Cardiotocography |
| B. | Ultrasonic therapy |
| C. | Spectrophotometry |
| D. | Diathermy |
| Answer» D. Diathermy | |
| 10. |
The branch of medicine that deals with the provision and use of artificial devices such as splints and braces is |
| A. | prosthetics |
| B. | orthotics |
| C. | laproscopic |
| D. | augmentative communication |
| Answer» D. augmentative communication | |
| 11. |
The group delay of the wave with phase constant of 62.5 units and frequency of 4.5 radian/sec is |
| A. | 13.88 |
| B. | 31.88 |
| C. | 88.13 |
| D. | 88.31 |
| Answer» B. 31.88 | |
| 12. |
Monopolar needle electrodes are having coatings of which material over the stainless steel wires which are bare only at the tips? |
| A. | carbon |
| B. | calcium |
| C. | sodium |
| D. | teflon |
| Answer» E. | |
| 13. |
Which electrodes can work even after being induced to large electric discharge such as defibrillation? |
| A. | polarizing electrodes |
| B. | magnetic electrodes |
| C. | non-polarizing electrodes |
| D. | electrolytic electrodes |
| Answer» D. electrolytic electrodes | |
| 14. |
In the diagram of single beam photometer given below, identify the component that is not marked. |
| A. | Monochromator |
| B. | Absorption filter |
| C. | Sample holder |
| D. | Interference filter |
| Answer» D. Interference filter | |
| 15. |
Which of the following is the purpose of the beam splitter in double beam photometer or colorimeter? |
| A. | Splits beam into two equal intensity beams |
| B. | Splits beam in such a way that sample beam has higher intensity |
| C. | Splits beam in such a way that a reference beam has higher intensity |
| D. | Merge two equal intensity beams into single beam |
| Answer» B. Splits beam in such a way that sample beam has higher intensity | |
| 16. |
Which of the following is the purpose of balance indicator in double beam photometer or colorimeter? |
| A. | Selects a particular wavelength |
| B. | Splits the wavelength selected into two equal beams |
| C. | Detects and indicates the amount of light falling on it |
| D. | Indicates the difference between the output of two photometers |
| Answer» E. | |
| 17. |
What is included in the system to facilitate playback and study of EMG sound waveforms at a later convenient time? |
| A. | Preamplifier |
| B. | Oscilloscope |
| C. | Tape Recorder |
| D. | Ground Electrode |
| Answer» D. Ground Electrode | |
| 18. |
According to the international 10/20 system to measure EEG, odd number denotes which side of the brain? |
| A. | left |
| B. | right |
| C. | top |
| D. | front |
| Answer» B. right | |
| 19. |
According to the international 10/20 system to measure EEG, even number denotes which side of the brain? |
| A. | left |
| B. | top |
| C. | bottom |
| D. | right |
| Answer» E. | |
| 20. |
is a vectorial representation of the distribution of electric potentials generated by heart. |
| A. | EEG |
| B. | ECG |
| C. | PCG |
| D. | VCG |
| Answer» E. | |
| 21. |
Which of the following interpreter can diagnose various muscular disorders by listening to the sounds produced when the muscle potentials are fed to loudspeaker? |
| A. | EEG |
| B. | ECG |
| C. | VCG |
| D. | EMG |
| Answer» E. | |
| 22. |
Which rhythm is the principal component of the EEG that indicates the alertness of the brain? |
| A. | theta rhythm |
| B. | gamma rhythm |
| C. | beta rhythm |
| D. | alpha rhythm |
| Answer» E. | |
| 23. |
Which of the following instrument is used for recording the sounds connected with the pumping action of the heart? |
| A. | ECG |
| B. | VCG |
| C. | PCG |
| D. | EEG |
| Answer» D. EEG | |
| 24. |
The contraction of the skeletal muscles results in the generation of action potential in the individual muscle fibers. Record of this action potential is called |
| A. | ECG |
| B. | EMG |
| C. | EEG |
| D. | EKG |
| Answer» C. EEG | |
| 25. |
What is the frequency range of sound generated from the closure of the mitral and tricuspid valve? |
| A. | 0 to 30 Hz |
| B. | 30 to 100 Hz |
| C. | 100 to 1000 Hz |
| D. | above 1000 Hz |
| Answer» C. 100 to 1000 Hz | |
| 26. |
When intramuscular EMG is required to look into the electrical activities of deeper or overlaid muscles, electrodes are used. |
| A. | plate shape electrodes |
| B. | surface electrodes |
| C. | thin thread electrodes |
| D. | fine wire electrodes |
| Answer» E. | |
| 27. |
Which of the following is the technique of analyzing the electrical activity of the heart by obtaining ECG s? |
| A. | VCG |
| B. | EEG |
| C. | EMG |
| D. | PCG |
| Answer» B. EEG | |
| 28. |
PCG amplifiers usually have gain compensation circuits to increase the amplification of high frequency signals, which are usually of low intensity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 29. |
Which of the following amplifier circulatory is employed to reduce the hum noise generated by the power supply in the ECG circuit? |
| A. | band pass filters |
| B. | high pass filters |
| C. | notch filters |
| D. | low pass filters |
| Answer» D. low pass filters | |
| 30. |
Sodium selective electrode provides a good response in measurement when the pH is above which of the following values? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 10 |
| Answer» E. | |
| 31. |
The power of the transmitter with a radiation resistance of 12 ohm and an antenna current of 3.5A is |
| A. | 147 |
| B. | 741 |
| C. | 174 |
| D. | 471 |
| Answer» B. 741 | |
| 32. |
5 and Zo = 50, we get Zmax = 2.5 x 50 = 125 ohm. "9. |
| A. | " The minimum impedance of a transmission line 75 ohm with a standing wave ratio of 4 is 75 |
| B. | 300 |
| C. | 18.75 |
| D. | 150 |
| Answer» D. 150 | |
| 33. |
Find IC, given VCE=0.77v, VCC=10v, VBE=0.37v and RC=2.4k in Dual Input Balanced Output differential amplifier |
| A. | 0.4mA |
| B. | 0.4A |
| C. | 4mA |
| D. | 4A |
| Answer» D. 4A | |
| 34. |
If output is measured between two collectors of transistors, then the Differential amplifier with two input signal is said to be configured as |
| A. | Dual Input Balanced Output |
| B. | Dual Input Unbalanced Output |
| C. | Single Input Balanced Output |
| D. | Dual Input Unbalanced Output |
| Answer» B. Dual Input Unbalanced Output | |
| 35. |
For the circuit shown below, determine the Output voltage (Assume =5, differential input resistance=12 k ) |
| A. | 4.33v |
| B. | 2.33v |
| C. | 3.33v |
| D. | 1.33v |
| Answer» D. 1.33v | |
| 36. |
The details of low pass filter sections are given as fh =10kHz, AF= 2 and f=1.2kHz. Find the voltage gain magnitude of first order wide band-pass filter, if the voltage gain magnitude of high pass filter section is 8.32dB. |
| A. | 48.13dB |
| B. | 10.02dB |
| C. | 14.28dB |
| D. | 65.99dB |
| Answer» D. 65.99dB | |
| 37. |
An emitter bias Dual Input Balanced Output differential amplifier has VCC=20v, =100, VBE=0.7v, RE=1.3k . Find IE |
| A. | 7.42mA |
| B. | 9.8mA |
| C. | 10mA |
| D. | 8.6mA |
| Answer» B. 9.8mA | |
| 38. |
Find the voltage gain magnitude of the wide band-pass filter? Where total pass band gain is=6, input frequency = 750Hz, Low cut-off frequency =200Hz and high cut-off frequency=1khz. |
| A. | 13.36 dB |
| B. | 12.25 dB |
| C. | 11.71 dB |
| D. | 14.837dB |
| Answer» E. | |
| 39. |
In a Single Input Balanced Output Differential amplifier, given VCC=15v, RE = 3.9k , VCE=2.4 v and re=250 . Determine Voltage gain |
| A. | 26 |
| B. | 56 |
| C. | 38 |
| D. | 61 |
| Answer» B. 56 | |
| 40. |
When a second order high pass filter and second order low pass sections are cascaded, the resultant filter is a |
| A. | 80dB/decade band-pass filter |
| B. | 40dB/decade band-pass filter |
| C. | 20dB/ decade band-pass filter |
| D. | None of the mentioned |
| Answer» C. 20dB/ decade band-pass filter | |
| 41. |
What is it called when the noise is present in the transmission line but gets canceled at the receiver? |
| A. | Cancellation mode |
| B. | Common mode cancellation |
| C. | Common mode rejection |
| D. | Rectification |
| Answer» D. Rectification | |
| 42. |
In order to be able to minimize the effects of changes occurring in the electrode impedances, it is necessary to employ a preamplifier having a high input impedance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 43. |
When the ratio of load voltage to input voltage is 5, the ratio of the characteristic impedance to the input impedance is |
| A. | 1/5 |
| B. | 5 |
| C. | 10 |
| D. | 25 |
| Answer» C. 10 | |
| 44. |
The impedance of the input should be in order to obtain high CMRR in the differential amplifier. |
| A. | low |
| B. | High |
| C. | Does not matter |
| D. | Very low |
| Answer» C. Does not matter | |
| 45. |
The characteristic impedance of a quarter wave transformer with load and input impedances given by 30 and 75 respectively is |
| A. | 47.43 |
| B. | 37.34 |
| C. | 73.23 |
| D. | 67.45 |
| Answer» B. 37.34 | |
| 46. |
5 is" The maximum impedance of a transmission line 50 ohm and the standing wave ratio of |
| A. | 20 |
| B. | 125 |
| C. | 200 |
| D. | 75 |
| Answer» C. 200 | |