Biomedical Telemetry

Biotelemetry

1. Mean Platelet Volume is the ratio of the ___________ and is expressed in femolitres.
a) integrated platelet volume to the platelet count
b) integrated platelet volume to the WBC count
c) integrated RBC volume to the platelet count
d) integrated platelet volume to the RBC count
Answer: integrated platelet volume to the platelet count
2. To achieve the ______________ required for medical applications, the amplifier must have large values of coupling capacitance.
a) random frequency response
b) high frequency response
c) average frequency response
d) low frequency response
Answer: low frequency response
3. Currently available oximeters utilize __________ wavelengths.
a) Equal to 2
b) Cannot be determined
c) Less than 2
d) More than 2
Answer: More than 2
4. What should be the frequency response of the amplifiers that are used for the amplification purpose of the input signal in medical devices?
a) high frequency response
b) low frequency response
c) frequency response has no role to play in it
d) average frequency response
Answer: low frequency response
5. Unit of Mean Platelet Volume is expressed in?
a) millilitres
b) femolitres
c) picolitres
d) decilitres
Answer: picolitres
6. Leucocytes are in the shape of ________
a) sphere
b) cube
c) hollow
d) cuboid
Answer: sphere
7. High pass filter amplifies frequency _____________
a) above certain value
b) below certain value
c) above and below certain value
d) at certain value
Answer: above certain value
8. Which of the following is correct expression for RDW index?
a) [(20th – 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K
b) [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K
c) [(20th + 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K
d) [(20th + 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K
Answer: [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K
9. _______ is the percentage of the total specimen volume occupied by the platelets.
a) Mean Platelet Volume
b) Plateletcrit
c) Red Cell Distribution Width
d) Platelet Distribution Width
Answer: Plateletcrit
10. Modern instrument use ________ for intravascular oximetry?
a) photodiode
b) red and infrared LED’s
c) optical fibre
d) phototransistor
Answer: optical fibre
11. Mix venous saturation is measured by __________
a) Ear Oximeter
b) Intravascular Oximeter
c) Skin Reflectance Oximeter
d) Pulse Oximeter
Answer: Intravascular Oximeter
12. Low pass filter amplifies signals below a certain frequency.
a) True
b) False
Answer: True
13. Leucocytes are not responsible for the formation of the defence mechanism of the body that fights against infection.
a) True
b) False
Answer: False
14. Optical fiber sensors are immune to electromagnetic disturbances.
a) True
b) False
Answer: True
15. Neutrophils are bigger than the red cells
a) True
b) False
Answer: True

Single Channel Telemetry System

1. ________________ is employed with resistive transducers which require an external source of excitation?
a) dc bridge amplifier
b) ac coupled amplifier
c) carrier amplifier
d) differential amplifier
Answer: dc bridge amplifier
2. The CMRR is expressed in _____________
a) V/s
b) dB/ms
c) dB/s
d) dB
Answer: dB
3. Reduction in electromagnetic coupling is achieved by _____
a) shielding
b) common grounding
c) multiple grounding
d) wire twisting
Answer: multiple grounding
4. __________ is not the property of instrumentational amplifier.
a) Extremely high input impedance
b) Very low CMRR
c) Low bias and offset currents
d) High slew rate
Answer: Very low CMRR
5. From the options given below select the one which is not a type of isolation amplifier?
a) transformer type isolation amplifiers
b) resistive coupled isolation amplifiers
c) optically isolated isolation amplifiers
d) capactively coupled isolation amplifiers
Answer: resistive coupled isolation amplifiers
6. ___________ system may include lenses, mirrors, slits, diaphragm etc.
a) Photo system
b) Radiant system
c) Cardiac system
d) Optical system
Answer: Optical system
7. Which of the following amplifier is commonly used for providing protection against leakage currents?
a) Isolation amplifiers
b) Instrumentational amplifiers
c) Inverting amplifiers
d) Differential amplifiers
Answer: Isolation amplifiers
8. Which of the following feedback type is employed with DC amplifiers?
a) negative
b) can be any positive or negative doesn’t matter
c) depends on the application
d) positive
Answer: negative
9. The isolation includes common supply voltage sources and common grounds on each side of the isolation barrier.
a) True
b) False
Answer: False
10. An oscillator and a capacitance coupled amplifier are present in a carrier amplifier.
a) True
b) False
Answer: True

Multi-Patient Telemetry

1. 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: Multi channel EEG
2. Which among the following electrode gives high skin impedance as compared to ECG?
a) VCG
b) EEG
c) EMG
d) PCG
Answer: EEG
3. 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: Monopolar
4. _____________ instrument is used for recording the electrical activity of the brain.
a) ECG
b) PCG
c) EEG
d) EMG
Answer: EEG
5. ______________ 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: Electrode jelly
6. 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: Electrodes
7. ______________ 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: 0.1 to 70 Hz
8. The typical value of calibration signal is ________
a) 10 uV/cm
b) 70 uV/cm
c) 50 uV/cm
d) 30 uV/cm
Answer: 50 uV/cm
9. 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: EEG
10. Reference electrode for recording EEG is placed on __________
a) forehead
b) cervical
c) nasal
d) facial
Answer: forehead
11. 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: 60
12. 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: symmetrical
13. Preamplifiers used in electroencephalograph have low gain and high noise characteristics for EEG.
a) True
b) False
Answer: False
14. EEG electrodes are smaller in size than ECG electrodes.
a) True
b) False
Answer: True
15. EEG signals picked up by surface electrodes are usually larger as compared to ECG.
a) True
b) False
Answer: False

Implantable Telemetry Systems

1. Which of the following is the principle behind strain gauge?
a) variable contact area
b) variable inductance
c) variable capacitance
d) variable resistance
Answer: variable resistance
2. Which of the following is the correct definition for Gauge factor?
a) (incremental change in resistance due to strain/resistance of an unstretched wire)*(unstretched length of wire/incremental change in length)
b) (resistance of an unstretched wire/incremental change in resistance due to stress)*(unstretched length of wire/incremental change in length)
c) (incremental change in resistance due to stress/resistance of an unstretched wire)*(incremental change in length/unstretched length of wire)
d) (incremental change in resistance due to stress/resistance of an unstretched wire)*(unstretched length of wire/incremental change in length)
Answer: (incremental change in resistance due to stress/resistance of an unstretched wire)*(unstretched length of wire/incremental change in length)
3. ________________ material employed for making diaphragm to measure pressure.
a) zirconate titanate
b) barium titanate
c) tourmaline
d) phosphor bronze
Answer: phosphor bronze
4. Which of the following is the correction option in relation to piezo-electricity?
a) sound electricity
b) pressure electricity
c) temperature electricity
d) photo electricity
Answer: pressure electricity
5. Which of the following parameter is measured by strain gauge?
a) temperature
b) displacement
c) height
d) pressure
Answer: pressure
6. ______________ is not a piezo-electric material.
a) quartz
b) rochelle salt
c) aluminium
d) barium titanate
Answer: quartz
7. ________________ is used to describe the figure of merit which determines the overall behaviour of the wire under stress.
a) gauge resistance
b) elastic factor
c) gauge factor
d) elastic modulus
Answer: gauge factor
8. Which lead method is employed to compensate for temperature variation in the leads?
a) three
b) eight
c) six
d) two
Answer: six
9. Mechanical deformation occurs in the piezo-electric material on applying electricity.
a) True
b) False
Answer: True
10. Electricity is generated by a piezo-electric crystal on applying pressure to it.
a) True
b) False
Answer: True

Biotelemetry Application on Wimax Networks

1. __________ is considered to be the primary pacemaker of the heart.
a) bundle of his
b) sino-atrial node
c) purkinje fibres
d) atrio-ventricular node
Answer: sino-atrial node
2. Among the following, which has CMRR is of an order of 100-120 dB?
a) VCG
b) ECG
c) PCG
d) EEG
Answer: ECG
3. _____________ is paper recording speed for routine work.
a) 10 mm/s
b) 20 mm/s
c) 25 mm/s
d) 15 mm/s
Answer: 20 mm/s
4. Which of the following material used in limb surface electrode?
a) german silver
b) platinum
c) gold
d) copper
Answer: german silver
5. Which of the following reason is responsible for the Welsh cup electrodes to record the electrical signal of the heart?
a) low contact impedance
b) zero contact impedance
c) high contact impedance
d) negligible contact impedance
Answer: high contact impedance
6. What is made horizontally on electrocardiogram?
a) time measurements and heart rate measurements
b) only heart Rate Measurements
c) only time Measurements
d) not fixed and can be any thing
Answer: time measurements and heart rate measurements
7. Which is the correct location of Atrio ventricular node?
a) upper part of the heart wall between the two atrial
b) lower part of the heart wall above the two atrial
c) upper part of the heart wall above the two atrial
d) lower part of the heart wall between the two atrial
Answer: lower part of the heart wall between the two atrial
8. Which of the following option is correct regarding the sensitivity of an electrocardiograph?
a) 10 mm/mV
b) 15 mm/mV
c) 20 mm/mV
d) 25 mm/mV
Answer: 10 mm/mV
9. Preamplifier is used ________
a) For Amplification
b) For Stabilizing effect
c) For Modifying effects
d) For Reducing effect
Answer: For Stabilizing effect
10. __________ records the electrical activity of heart.
a) ECG(Electrocardiograph)
b) PCG(Phonocardiograph)
c) VCG(Vectorcardiograph)
d) EEG
Answer: ECG(Electrocardiograph)
11. ______________ is a wireless ECG acquiring system.
a) limb electrodes
b) smart pad
c) pasteless electrodes
d) pregelled disposable electrodes
Answer: smart pad
12. Which of the following option is correct regarding the Buffer Amplifier?
a) low impedance signals to high impedance signals
b) high impedance signals to low impedance signals
c) ac impedance signals to dc impedance signals
d) dc impedance signals to ac impedance signals
Answer: high impedance signals to low impedance signals
13._______________ is measured on the vertical axis of electrocardiogram.
a) Time Measurements and Heart Rate Measurements
b) Amplitude Measurements
c) Time Measurements
d) Heart Rate Measurements
Answer: Time Measurements
14. In floating electrodes metal electrode make direct contact with the skin.
a) True
b) False
Answer: False
15. sino-atrial node is considered to be the primary pacemaker of the heart.
a) True
b) False
Answer: True

Transmission of Analog Physiological Signals Over Telephone

1. Which of the following is used to determine the biological response of the biosensor?
a) artificial membrane
b) chemical membrane
c) physio-chemical membrane
d) biocatalytic membrane
Answer: biocatalytic membrane
2. Which of the following sensor is used for Endoscopic imaging?
a) thermal sensors
b) optic fiber sensors
c) chemical sensors
d) pressure sensors
Answer: optic fiber sensors
3. ____________ is a wireless ECG acquiring system.
a) pregelled disposable electrodes
b) smart pad
c) pasteless electrodes
d) limb electrodes
Answer: smart pad
4. Monopolar needle electrode has a coating of______________ material over the stainless steel wires which are bare only at the tips.
a) carbon
b) calcium
c) teflon
d) sodium
Answer: teflon
5. Which of the following is the principle behind Fluoroptic temperature sensors working?
a) optical fiber
b) thermistor
c) thermocouple
d) rtd
Answer: optical fiber
6. Which of the following component converts biochemical events into measurable signals?
a) amplifier
b) opamp
c) rectifier
d) transducer
Answer: transducer
7. What is the principle behind Doppler velocimetry working?
a) amplitude measurement of fiber optic sensor
b) frequency measurement of fiber optic sensor
c) time shift measurement of fiber optic sensor
d) phase measurement of fiber optic sensor
Answer: frequency measurement of fiber optic sensor
8. Blood glucose level measurement device uses a biosensor works on the principle of _____________
a) electromechanical
b) electrochemical
c) electrothermal
d) electroresistive
Answer: electrochemical
9. What is the working principle behind Home blood glucose sensor?
a) electro-physiological
b) electrochemical
c) chemical
d) physio-chemical
Answer: electrochemical
10. Home blood glucose measurement devices measure the glucose level through an invasive method.
a) True
b) False
Answer: True