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
Posted Date:-2022-04-25 16:40:07
Which of the following instrument is used for making a study of reflex responses?
1.EEG
2.ECG
3.VCG
4.EMG
Posted Date:-2022-04-25 16:43:25
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)
Posted Date:-2022-04-25 16:30:38
‘Stand by’ mode of operation is generally provided in which instrument?
1.VCG
2.PCG
3.ECG
4.EMG
Posted Date:-2022-04-25 14:50:30
EEG electrodes are larger in size than ECG electrodes.
1.True
2.False
Posted Date:-2022-04-25 16:44:49
Electrocardiography are used in catheterization laboratories, coronary care units and for routine diagnostic applications in cardiology.
1.True
2.False
Posted Date:-2022-04-25 14:44:02
EMG instrument contain frequency component extending up to ____________ Khz.
1.1
2.5
3.10
4.15
Posted Date:-2022-04-25 16:36:42
EMG instrument is useful for making study of ___________
1.cardiovascular function
2.neuromuscular function
3.nervous function
4.Immune function
Posted Date:-2022-04-25 16:42:44
EMG is recorded by using surface electrodes.
1.True
2.False
Posted Date:-2022-04-25 16:32:59
How lead selector selects electrodes?
1.one by one
2.two by two
3.three by three
4.four by four
Posted Date:-2022-04-25 14:48:17
How many loops each vectorcardiogram exhibits?
1.one
2.two
3.three
4.four
Posted Date:-2022-04-25 16:22:20
How many paper speeds are necessary for ECG recording?
1.One
2.Minimum two
3.Can be any
4.Max two
Posted Date:-2022-04-25 14:46:43
Modern EMG machines are PC based.
1.True
2. False
Posted Date:-2022-04-25 16:41:23
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
Posted Date:-2022-04-25 16:31:44
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
Posted Date:-2022-04-25 14:49:05
The amplitude of EMG signals depend upon which of the following factor?
1.Respiration
2.Position of electrode
3.Blood Resistivity
4.Ventricular Volume
Posted Date:-2022-04-25 16:35:08
Vectorcardiogram displays the electrical events in __________ perpendicular axes.
1.one
2.two
3.three
4. four
Posted Date:-2022-04-25 14:55:05
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
Posted Date:-2022-04-25 14:45:29
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
Posted Date:-2022-04-25 16:37:30
What is necessary for providing a common reference for measurement?
1.active electrode
2.ground electrode
3.tape recorder
4.oscilloscope
Posted Date:-2022-04-25 16:38:25
What is paper recording speed for routine work?
1.10 mm/s
2.15 mm/s
3.20 mm/s
4.25 mm/s
Posted Date:-2022-04-25 14:51:59
What is sensitivity of an electrocardiograph?
1.10 mm/mV
2.15 mm/mV
3.20 mm/mV
4.25 mm/mV
Posted Date:-2022-04-25 14:53:10
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
Posted Date:-2022-04-25 16:31:17
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
Posted Date:-2022-04-25 16:26:49
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
Posted Date:-2022-04-25 16:28:13
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
Posted Date:-2022-04-25 16:28:58
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
Posted Date:-2022-04-25 16:36:01
What is used to display EMG waveforms?
1.Cathode Ray Oscilloscope
2.Analog storage Oscilloscope
3.Digital Oscilloscope
4.Dual-beam Oscilloscope
Posted Date:-2022-04-25 16:34:32
What measurements are made vertically on electrocardiogram?
1.Time Measurements
2.Heart Rate Measurements
3.Amplitude Measurements
4.Time Measurements and Heart Rate Measurements
Posted Date:-2022-04-25 14:52:37
What should be CMRR of preamplifier upto 5 Khz?
1.10 dB
2.30 dB
3.90 dB
4.greater than 90 dB
Posted Date:-2022-04-25 16:40:49
Where are potentials picked up by patient electrodes taken to?
1.Lead Selector switch
2.Preamp
3.Power Amplifier
4.Instrumentational amplifier
Posted Date:-2022-04-25 14:47:33
Which instrument is used for clinical detection of heart sounds?
1.Stethoscope
2.Endoscope
3. Anoscope
4.Proctoscope
Posted Date:-2022-04-25 16:25:23
Which machines CMRR is of order of 100-120 dB?
1.VCG
2.PCG
3.EEG
4.ECG
Posted Date:-2022-04-25 14:46:09
Which of the following instrument is used for recording the electrical activity of the brain?
1.ECG
2.EMG
3.PCG
4.EEG
Posted Date:-2022-04-25 16:44:23
Which of the following instrument is used for recording the electrical activity of the muscles?
1.ECG
2.EMG
3.PCG
4.EEG
Posted Date:-2022-04-25 16:32:31
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
Posted Date:-2022-04-25 16:23:12
Which of the following instrument records the electrical activity of the heart?
1.VCG(Vectorcardiograph)
2.PCG(Phonocardiograph)
3.ECG(Electrocardiograph)
4.EEG
Posted Date:-2022-04-25 14:43:36
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
Posted Date:-2022-04-25 16:39:06
Which of the following is material is used to improve electrical contact?
1.Silver Tungsten
2.Electrode jelly
3.Silver Graphite
4.Copper Tungsten
Posted Date:-2022-04-25 16:46:16
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
Posted Date:-2022-04-25 14:54:20
Which of the following microphone is used for recording phonocardiograms?
1.Contact Microphone
2.Shotgun Microphone
3.Handheld Microphone
4.Lapel Microphone
Posted Date:-2022-04-25 16:27:30
Who described the new acoustic sensor?
1.Golden et al
2.Rijn et al
3.Levkov et al
4.Kassal et al
Posted Date:-2022-04-25 16:29:34
Who provides a recording of waveforms of heart sounds?
1.Electrocardiograph
2.Vectorcardiograph
3.Phonocardiograph
4.Electromyograph
Posted Date:-2022-04-25 16:26:01
Who provides valuable information about a wide range of cardiac disorders?
1.VCG
2. ECG
3.PCG
4.EEG
Posted Date:-2022-04-25 14:44:42
Whose electrodes give high skin impedance as compared to ECG?
1.VCG
2.PCG
3.EMG
4.EEG
Posted Date:-2022-04-25 16:47:00
Whose measurements are important for myoelectric control of prosthetic devices?
1.VCG
2.ECG
3.EEG
4.EMG
Posted Date:-2022-04-25 16:33:34
Why is preamplifier used?
1.For Amplification
2.For Stabilizing effect
3.For Reducing effect
4.For Modifying effects
Posted Date:-2022-04-25 14:49:52
_______ 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
Posted Date:-2022-04-25 16:45:34
________ 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
Posted Date:-2022-04-25 14:51:23
___________ is a vectorial representation of the distribution of electric potentials generated by heart.
1.EEG
2.ECG
3.PCG
4.VCG
Posted Date:-2022-04-25 16:21:28