BIOMEDICAL MCQ Quiz
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The sensitivity of an electrocardiograph is typically set at 10 mm/mV.
A. a) True
B. b) False
What is range of ultrasonic energy transmitted into the body?
A. a) 0-5 mW/cm2
B. b) 5-10 mW/cm2
C. c) 10-15 mW/cm2
D. d) 15-20 mW/cm2
In floating electrodes metal electrode does not make direct contact with the skin.
A. a) True
B. b) False
The blood is a poor conductor of electricity.
A. a) True
B. b) False
To achieve optimum performance and to enable the relationship of change in resistance with the volume of the cell to hold good, it is recommended that the ratio of the aperture length to the diameter of the aperture should be __________
A. a) 75:1
B. b) 0.75:100
C. c) 0.75:1
D. d) 0.5:10
What are used as light source in Skin Reflectance Oximeter?
A. a) Photodiode
B. b) Red and infrared LED’s
C. c) Flashtube
D. d) Arc Lamp
The detected signals are processed in the form of photo – plethysmographs to determine ___________
A. a) SiO2
B. b) SO2
C. c) CO2
D. d) TiO2
What is incorporated in sensor to warm the tissue so as to increase local blood flow?
A. a) heater
B. b) heating plate
C. c) thermostat
D. d) thermometer
The branch of medicine that deals with the provision and use of artificial devices such as splints and braces is _________
A. a) prosthetics
B. b) orthotics
C. c) laproscopic
D. d) augmentative communication
Normal EEG frequency range is _______
A. a) 50-500Hz
B. b) 0.5-50HZ
C. c) 0.05-5Hz
D. d) 1-200Hz
The volume of blood within the dialyzer is known as ___________
A. a) secondary volume
B. b) quarterly volume
C. c) priming volume
D. d) residual volume
Which rhythm is the principal component of the EEG that indicates the alertness of the brain?
A. a) theta rhythm
B. b) gamma rhythm
C. c) beta rhythm
D. d) alpha rhythm
How many sounds are produced from the normal foetal heart action?
A. a) 1
B. b) 2
C. c) 3
D. d) 4
Which of the following instrument makes use of the Doppler shift principle?
A. a) Abdominal Foetal Electrocardiogram
B. b) Foetal Phonocardiogram
C. c) Foetus blood flow detector
D. d) Foetal ECG with scalp electrode
Electrodes to measure EEG are placed on ________
A. a) forehead
B. b) scalp
C. c) cheek
D. d) ears
Which of the following can be measured using change in resistivity?
A. a)Temperature
B. b) Visible radiation
C. c) Moisture content
D. d) All of the mentioned
Which of the following can be used to measure using thermistors?
A. a) Very low
B. b) In-between 100Ω and 1MΩ
C. c) Greater than 1MΩ
D. d) None of the mentioned
The delta wave in EEG ranges from ___________
A. a) 0.5-4Hz
B. b) 4-8Hz
C. c) 8-13Hz
D. d) 13-22Hz
Which of the following amplifier circulatory is employed to reduce the hum noise generated by the power supply in the ECG circuit?
A. a) band pass filters
B. b) high pass filters
C. c) notch filters
D. d) low pass filters
Which of the following instrument is used to measure the oxygen saturation level of blood in localized areas of oxygen?
A. a) Ear Oximeter
B. b) Pulse Oximeter
C. c) Skin reflectance Oximeter
D. d) Intravascular Oximeter
The frequency range of ECG is ____________
A. a) 0.05-150 HZ
B. b) 500-1500 Hz
C. c) 5-500 kHz
D. d) 0.5-150 MHz
A metal with temperature coefficient of resistance has a value 200, its initial resistance is given by 40Ω. For an increase in 300c to350c what will be the final resistance value?
A. a) 40 KΩ
B. b) 4 KΩ
C. c) 40 Ω
D. d) 400 Ω
What is ultrasonic frequency employed for obstetric studies?
A. a) 0.5 to 1 MHz
B. b) 1 to 1.5 MHz
C. c) 1.5 to 2 MHz
D. d) 2 to 2.5 MHz
According to the international 10/20 system to measure EEG, odd number denotes which side of the brain?
A. a) left
B. b) right
C. c) top
D. d) front
Letter F in the EEG electrode placement system denotes?
A. a) front
B. b) face
C. c) frontal lobe
D. d) fast
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