Biomedical/Biomedical Instrumentation MCQs Sample Test,Sample questions

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Question: 
 What is the diameter of silver electrodes in the amplifier circuit of Johnson et al?

1.2 mm

2.4 mm

3.6 mm

4.10 mm

Question: 
 Which of the following instrument is used for making a study of reflex responses?

1.EEG

2.ECG

3.VCG

4.EMG

Question: 
Acoustic sensor principal sensing component is made up of which polymer?

1.PEO(Poly-ethylene oxide)

2.PET(Poly-ethylene tetraphthalate)

3.PVDF(Poly-vinylidene fluoride)

4.PS(Poly-styrene)

Question: 
‘Stand by’ mode of operation is generally provided in which instrument?

1.VCG

2.PCG

3.ECG

4.EMG

Question: 
EEG electrodes are larger in size than ECG electrodes.

1.True

2.False

Question: 
Electrocardiography are used in catheterization laboratories, coronary care units and for routine diagnostic applications in cardiology.

1.True

2.False

Question: 
EMG instrument contain frequency component extending up to ____________ Khz.

1.1

2.5

3.10

4.15

Question: 
EMG instrument is useful for making study of ___________

1.cardiovascular function

2.neuromuscular function

3.nervous function

4.Immune function

Question: 
EMG is recorded by using surface electrodes.

1.True

2.False

Question: 
How lead selector selects electrodes?

1.one by one

2.two by two

3.three by three

4.four by four

Question: 
How many loops each vectorcardiogram exhibits?

1.one

2.two

3.three

4.four

Question: 
How many paper speeds are necessary for ECG recording?

1.One

2.Minimum two

3.Can be any

4.Max two

Question: 
Modern EMG machines are PC based.

1.True

2. False

Question: 
PCG amplifiers usually have gain compensation circuits to increase the amplification of high frequency signals, which are usually of low intensity.

1.True

2.False

Question: 
The amplified output signal is picked up single-ended from preamp and is given to the _________

1.Power Amplifier

2.Lead Selector

3.Pen Motor

4.Paper motor

Question: 
The amplitude of EMG signals depend upon which of the following factor?

1.Respiration

2.Position of electrode

3.Blood Resistivity

4.Ventricular Volume

Question: 
Vectorcardiogram displays the electrical events in __________ perpendicular axes.

1.one

2.two

3.three

4. four

Question: 
What is diagnostically useful frequency range?

1.0.025 to 0.05 Hz

2.0.05 to 150 Hz

3.150 to 200 Hz

4.0.05 to 150 MHz

Question: 
What is included in the system to facilitate playback and study of EMG sound waveforms at a later convenient time?

1.Preamplifier

2.Oscilloscope

3.Tape Recorder

4.Ground Electrode

Question: 
What is necessary for providing a common reference for measurement?

1.active electrode

2.ground electrode

3.tape recorder

4.oscilloscope

Question: 
What is paper recording speed for routine work?

1.10 mm/s

2.15 mm/s

3.20 mm/s

4.25 mm/s

Question: 
What is sensitivity of an electrocardiograph?

1.10 mm/mV

2.15 mm/mV

3.20 mm/mV

4.25 mm/mV

Question: 
What is the frequency range of amplifier used for a phonocardiograph?

1.less than 0 Hz

2.0 to 20 Hz

3.20 to 2000 Hz

4.above 2000 Hz

Question: 
What is the frequency range of sound generated from the closure of the mitral and tricuspid valve?

1.0 to 30 Hz

2.30 to 100 Hz

3.100 to 1000 Hz

4.above 1000 Hz

Question: 
What is the frequency range of sound produced at the closure of aortic and pulmonic valves?

1.less than 0 Hz

2.0 to 30 Hz

3.30 to 100 Hz

4.above 100 Hz

Question: 
What is the thickness of the new acoustic sensor?

1.0.25 mm

2.0.5 mm

3.1.0 mm

4.1.5 mm

Question: 
What is the typical range of EMG signals?

1.0.025 to 0.050 mV

2.0.050 to 0.1 mV

3.0.1 to 0.5 mV

4.0.5 to 1 mV

Question: 
What is used to display EMG waveforms?

1.Cathode Ray Oscilloscope

2.Analog storage Oscilloscope

3.Digital Oscilloscope

4.Dual-beam Oscilloscope

Question: 
What measurements are made vertically on electrocardiogram?

1.Time Measurements

2.Heart Rate Measurements

3.Amplitude Measurements

4.Time Measurements and Heart Rate Measurements

Question: 
What should be CMRR of preamplifier upto 5 Khz?

1.10 dB

2.30 dB

3.90 dB

4.greater than 90 dB

Question: 
Where are potentials picked up by patient electrodes taken to?

1.Lead Selector switch

2.Preamp

3.Power Amplifier

4.Instrumentational amplifier

Question: 
Which instrument is used for clinical detection of heart sounds?

1.Stethoscope

2.Endoscope

3. Anoscope

4.Proctoscope

Question: 
Which machines CMRR is of order of 100-120 dB?

1.VCG

2.PCG

3.EEG

4.ECG

Question: 
Which of the following instrument is used for recording the electrical activity of the brain?

1.ECG

2.EMG

3.PCG

4.EEG

Question: 
Which of the following instrument is used for recording the electrical activity of the muscles?

1.ECG

2.EMG

3.PCG

4.EEG

Question: 
Which of the following instrument is used for recording the sounds connected with the pumping action of the heart?

1.ECG

2.VCG

3.PCG

4.EEG

Question: 
Which of the following instrument records the electrical activity of the heart?

1.VCG(Vectorcardiograph)

2.PCG(Phonocardiograph)

3.ECG(Electrocardiograph)

4.EEG

Question: 
Which of the following interpreter can diagnose various muscular disorders by listening to the sounds produced when the muscle potentials are fed to loudspeaker?

1.EEG

2.ECG

3.VCG

4.EMG

Question: 
Which of the following is material is used to improve electrical contact?

1.Silver Tungsten

2.Electrode jelly

3.Silver Graphite

4.Copper Tungsten

Question: 
Which of the following is the technique of analyzing the electrical activity of the heart by obtaining ECG’s?

1.VCG

2.EEG

3.EMG

4.PCG

Question: 
Which of the following microphone is used for recording phonocardiograms?

1.Contact Microphone

2.Shotgun Microphone

3.Handheld Microphone

4.Lapel Microphone

Question: 
Who described the new acoustic sensor?

1.Golden et al

2.Rijn et al

3.Levkov et al

4.Kassal et al

Question: 
Who provides a recording of waveforms of heart sounds?

1.Electrocardiograph

2.Vectorcardiograph

3.Phonocardiograph

4.Electromyograph

Question: 
Who provides valuable information about a wide range of cardiac disorders?

1.VCG

2. ECG

3.PCG

4.EEG

Question: 
Whose electrodes give high skin impedance as compared to ECG?

1.VCG

2.PCG

3.EMG

4.EEG

Question: 
Whose measurements are important for myoelectric control of prosthetic devices?

1.VCG

2.ECG

3.EEG

4.EMG

Question: 
Why is preamplifier used?

1.For Amplification

2.For Stabilizing effect

3.For Reducing effect

4.For Modifying effects

Question: 
_______ is the superimposed wave of neuron potentials operating in a non-synchrronized manner in a physical sense.

1.VCG

2.ECG

3.EEG

4.PCG

Question: 
________ are made horizontally on electrocardiogram.

1.Time Measurements

2.Heart Rate Measurements

3.Time Measurements and Heart Rate Measurements

4.Not fixed and can be any thing

Question: 
___________ is a vectorial representation of the distribution of electric potentials generated by heart.

1.EEG

2.ECG

3.PCG

4.VCG

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