Olete.in – MCQs, Mock Tests & Government Job Prep | Biomedical Biomedical Instrumentation MCQs

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

1. VCG(Vectorcardiograph)
2. PCG(Phonocardiograph)
3. ECG(Electrocardiograph)
4. EEG

✅ Correct Answer: 3

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

1. True
2. False
3.
4.

✅ Correct Answer: 1

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

1. VCG
2. ECG
3. PCG
4. EEG

✅ Correct Answer: 2

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

✅ Correct Answer: 2

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

1. VCG
2. PCG
3. EEG
4. ECG

✅ Correct Answer: 4

How many paper speeds are necessary for ECG recording?

1. One
2. Minimum two
3. Can be any
4. Max two

✅ Correct Answer: 2

Where are potentials picked up by patient electrodes taken to?

1. Lead Selector switch
2. Preamp
3. Power Amplifier
4. Instrumentational amplifier

✅ Correct Answer: 1

How lead selector selects electrodes?

1. one by one
2. two by two
3. three by three
4. four by four

✅ Correct Answer: 2

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

✅ Correct Answer: 1

Why is preamplifier used?

1. For Amplification
2. For Stabilizing effect
3. For Reducing effect
4. For Modifying effects

✅ Correct Answer: 2

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

1. VCG
2. PCG
3. ECG
4. EMG

✅ Correct Answer: 3

________ 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

✅ Correct Answer: 3

What is paper recording speed for routine work?

1. 10 mm/s
2. 15 mm/s
3. 20 mm/s
4. 25 mm/s

✅ Correct Answer: 3

What measurements are made vertically on electrocardiogram?

1. Time Measurements
2. Heart Rate Measurements
3. Amplitude Measurements
4. Time Measurements and Heart Rate Measurements

✅ Correct Answer: 3

What is sensitivity of an electrocardiograph?

1. 10 mm/mV
2. 15 mm/mV
3. 20 mm/mV
4. 25 mm/mV

✅ Correct Answer: 1

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

✅ Correct Answer: 1

Vectorcardiogram displays the electrical events in __________ perpendicular axes.

1. one
2. two
3. three
4. four

✅ Correct Answer: 2

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

1. EEG
2. ECG
3. PCG
4. VCG

✅ Correct Answer: 4

How many loops each vectorcardiogram exhibits?

1. one
2. two
3. three
4. four

✅ Correct Answer: 3

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

✅ Correct Answer: 3

Which instrument is used for clinical detection of heart sounds?

1. Stethoscope
2. Endoscope
3. Anoscope
4. Proctoscope

✅ Correct Answer: 1

Who provides a recording of waveforms of heart sounds?

1. Electrocardiograph
2. Vectorcardiograph
3. Phonocardiograph
4. Electromyograph

✅ Correct Answer: 3

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

✅ Correct Answer: 2

Which of the following microphone is used for recording phonocardiograms?

1. Contact Microphone
2. Shotgun Microphone
3. Handheld Microphone
4. Lapel Microphone

✅ Correct Answer: 1

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

✅ Correct Answer: 4

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

✅ Correct Answer: 3

Who described the new acoustic sensor?

1. Golden et al
2. Rijn et al
3. Levkov et al
4. Kassal et al

✅ Correct Answer: 4

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)

✅ Correct Answer: 3

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

✅ Correct Answer: 3

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
3.
4.

✅ Correct Answer: 1

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

1. ECG
2. EMG
3. PCG
4. EEG

✅ Correct Answer: 2

EMG is recorded by using surface electrodes.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Whose measurements are important for myoelectric control of prosthetic devices?

1. VCG
2. ECG
3. EEG
4. EMG

✅ Correct Answer: 4

What is used to display EMG waveforms?

1. Cathode Ray Oscilloscope
2. Analog storage Oscilloscope
3. Digital Oscilloscope
4. Dual-beam Oscilloscope

✅ Correct Answer: 1

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

1. Respiration
2. Position of electrode
3. Blood Resistivity
4. Ventricular Volume

✅ Correct Answer: 2

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

✅ Correct Answer: 3

EMG instrument contain frequency component extending up to ____________ Khz.

1. 1
2. 5
3. 10
4. 15

✅ Correct Answer: 3

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

✅ Correct Answer: 3

What is necessary for providing a common reference for measurement?

1. active electrode
2. ground electrode
3. tape recorder
4. oscilloscope

✅ Correct Answer: 2

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

✅ Correct Answer: 4

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

✅ Correct Answer: 3

What should be CMRR of preamplifier upto 5 Khz?

1. 10 dB
2. 30 dB
3. 90 dB
4. greater than 90 dB

✅ Correct Answer: 4

Modern EMG machines are PC based.

1. True
2. False
3.
4.

✅ Correct Answer: 1

EMG instrument is useful for making study of ___________

1. cardiovascular function
2. neuromuscular function
3. nervous function
4. Immune function

✅ Correct Answer: 2

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

1. EEG
2. ECG
3. VCG
4. EMG

✅ Correct Answer: 4

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

1. ECG
2. EMG
3. PCG
4. EEG

✅ Correct Answer: 4

EEG electrodes are larger in size than ECG electrodes.

1. True
2. False
3.
4.

✅ Correct Answer: 2

_______ 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

✅ Correct Answer: 3

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

1. Silver Tungsten
2. Electrode jelly
3. Silver Graphite
4. Copper Tungsten

✅ Correct Answer: 2

Whose electrodes give high skin impedance as compared to ECG?

1. VCG
2. PCG
3. EMG
4. EEG

✅ Correct Answer: 4