MCQOPTIONS
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MCQOPTIONS
This section includes 23 Mcqs, each offering curated multiple-choice questions to sharpen your Biomedical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At what frequency is the notch filter in EEG machines sharply tuned to eliminate mains frequency interference? |
| A. | 60 |
| B. | 90 |
| C. | 10 |
| D. | 70 |
| Answer» B. 90 | |
| 2. |
The typical value of calibration signal is ________ |
| A. | 10 uV/cm |
| B. | 70 uV/cm |
| C. | 50 uV/cm |
| D. | 30 uV/cm |
| Answer» D. 30 uV/cm | |
| 3. |
Reference electrode for recording EEG is placed on __________ |
| A. | forehead |
| B. | cervical |
| C. | nasal |
| D. | facial |
| Answer» B. cervical | |
| 4. |
A pattern of electrodes on the head and the channels they are connected to is called a montage. Montages are always ___________ |
| A. | inverse |
| B. | random |
| C. | symmetrical |
| D. | asymmetrical |
| Answer» D. asymmetrical | |
| 5. |
EEG signals picked up by surface electrodes are usually larger as compared to ECG. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following is employed for a bipolar recording done? |
| A. | Uni Channel EEG |
| B. | Omni channel EEG |
| C. | Non Channel EEG |
| D. | Multi channel EEG |
| Answer» E. | |
| 7. |
What is the recording called in which voltage difference between an active electrode on scalp with respect to reference electrode at ear lobe or any other part of the body is recorded? |
| A. | Unipolar |
| B. | Bipolar |
| C. | Monopolar |
| D. | Nonpolar |
| Answer» D. Nonpolar | |
| 8. |
Which of the following is the superimposed wave of neuron potentials operating in a non-synchronized manner in a physical sense? |
| A. | EEG |
| B. | ECG |
| C. | VCG |
| D. | PCG |
| Answer» B. ECG | |
| 9. |
EEG_SIGNALS_PICKED_UP_BY_SURFACE_ELECTRODES_ARE_USUALLY_LARGER_AS_COMPARED_TO_ECG.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Reference electrode for recording EEG is placed on __________$ |
| A. | forehead |
| B. | cervical |
| C. | nasal |
| D. | facial |
| Answer» B. cervical | |
| 11. |
A_pattern_of_electrodes_on_the_head_and_the_channels_they_are_connected_to_is_called_a$ |
| A. | |
| B. | inverse |
| C. | random |
| Answer» D. | |
| 12. |
______________ is typical frequency range of standard EEG machines. |
| A. | 70 to 140 Hz |
| B. | 0.1 to 70 Hz |
| C. | 0.05 to 0.1 Hz |
| D. | 0.025 to 0.05 Hz |
| Answer» C. 0.05 to 0.1 Hz | |
| 13. |
At what frequency is the notch filter in EEG machines sharply tuned to eliminate mains frequency interference? |
| A. | 60 |
| B. | 90 |
| C. | 10 |
| D. | 70 |
| Answer» B. 90 | |
| 14. |
Preamplifiers used in electroencephalograph have low gain and high noise characteristics for EEG. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The_typical_value_of_calibration_signal_is_________ |
| A. | 10 uV/cm |
| B. | 70 uV/cm |
| C. | 50 uV/cm |
| D. | 30 uV/cm |
| Answer» D. 30 uV/cm | |
| 16. |
WHich of the following is employed for bipolar recording done? |
| A. | Uni Channel EEG |
| B. | Omni channel EEG |
| C. | Non Channel EEG |
| D. | Multi channel EEG |
| Answer» E. | |
| 17. |
What is the recording called in which voltage difference between an active electrode on scalp with respect to reference electrode at ear lobe or any other part of body is recorded? |
| A. | Unipolar |
| B. | Bipolar |
| C. | Monopolar |
| D. | Nonpolar |
| Answer» D. Nonpolar | |
| 18. |
Which of the following component is generally designed to have a very high value of input impedance to take care of high electrode impedance? |
| A. | Montages |
| B. | Filters |
| C. | Electrodes |
| D. | Preamplifiers |
| Answer» D. Preamplifiers | |
| 19. |
Which among the following electrode gives high skin impedance as compared to ECG? |
| A. | VCG |
| B. | EEG |
| C. | EMG |
| D. | PCG |
| Answer» C. EMG | |
| 20. |
______________ material is used to improve electrical contact in electrodes with the skin. |
| A. | Silver Tungsten |
| B. | Copper Tungsten |
| C. | Electrode jelly |
| D. | Silver Graphite |
| Answer» D. Silver Graphite | |
| 21. |
Which of the following is the superimposed wave of neuron potentials operating in a non-synchrronized manner in physical sense ? |
| A. | EEG |
| B. | ECG |
| C. | VCG |
| D. | PCG |
| Answer» B. ECG | |
| 22. |
EEG electrodes are smaller in size than ECG electrodes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 23. |
_____________ instrument is used for recording the electrical activity of the brain. |
| A. | ECG |
| B. | PCG |
| C. | EEG |
| D. | EMG |
| Answer» D. EMG | |