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

Which of the following is not the electrolyte?

1. Bicarbonate
2. Potassium
3. Magnesium
4. Sodium

✅ Correct Answer: 3

The blood pressure within the glumerular capillaries is _________ of mercury.

1. 80 mm
2. 70-80 mm
3. 90 mm
4. 70-90 mm

✅ Correct Answer: 4

In the sampling control, one complete rotation of the plate thus presents _______

1. 35 samples
2. 40 samples
3. 20 samples
4. 30 samples

✅ Correct Answer: 2

In the sampler, the range of the sample size is from _______

1. 0.1 to 8.5 ml
2. 1 to 8.5 ml
3. 0.85 to 0.1 ml
4. 8.5 to 10 ml

✅ Correct Answer: 1

Which cams are used in the earlier modules of auto-analyzers to initiate and control sample aspiration and wash cycles?

1. Electrical cams
2. Digital cams
3. Analog cams
4. Mechanical cams

✅ Correct Answer: 4

The function of the _________ is to continuously and simultaneously push fluids, air and gases through the analytical chain.

1. sampling unit
2. proportioning pump
3. manifold
4. dialyzer

✅ Correct Answer: 2

In the proportioning pump, two speed pump has a non-synchronous _____ rpm motor.

1. 10 rpm
2. 30 rpm
3. 45 rpm
4. 15 rpm

✅ Correct Answer: 3

________ is not part of the manifold.

1. Transmission tubing
2. Pump tubes
3. Platter
4. Plastic tubes

✅ Correct Answer: 4

The material used in limb surface electrode is ___________

1. German silver
2. Copper
3. Gold
4. Platinum

✅ Correct Answer: 1

Welsh cup electrodes have __________

1. low contact impedance
2. negligible contact impedance
3. high contact impedance
4. zero contact impedance

✅ Correct Answer: 3

In floating electrodes metal electrode does not make direct contact with the skin.

1. True
2. False
3.
4.

✅ Correct Answer: 1

The main design feature of pregelled disposable electrodes which helps to reduce the possibility of artefacts, drift and baseline wandering is _____________

1. low absorbency buffer layer with isotonic electrolyte
2. high absorbency buffer layer with isotonic electrolyte
3. high absorbency buffer layer without isotonic electrolyte
4. low absorbency buffer layer without isotonic electrolyte

✅ Correct Answer: 2

Recording electrical activities associated with heart is known as ____________

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

✅ Correct Answer: 4

Which of the following is considered to be the primary pacemaker of the heart?

1. sino-atrial node
2. atrio-ventricular node
3. purkinje fibres
4. bundle of his

✅ Correct Answer: 1

Atrio ventricular node is located at __________

1. upper part of the heart wall between the two atrial
2. lower part of the heart wall above the two atrial
3. lower part of the heart wall between the two atrial
4. upper part of the heart wall above the two atrial

✅ Correct Answer: 3

Buffer amplifier converts ____________

1. low impedance signals to high impedance signals
2. high impedance signals to low impedance signals
3. ac impedance signals to dc impedance signals
4. dc impedance signals to ac impedance signals

✅ Correct Answer: 2

Which of the following is a wireless ECG acquiring system?

1. pregelled disposable electrodes
2. limb electrodes
3. pasteless electrodes
4. smart pad

✅ Correct Answer: 4

Before placing the electrodes the skin should be __________

1. wet
2. dry
3. hairy
4. oily

✅ Correct Answer: 2

_____________ instrument is used for recording the electrical activity of the brain.

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

✅ Correct Answer: 3

EEG electrodes are smaller in size than ECG electrodes.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following is the superimposed wave of neuron potentials operating in a non-synchronized manner in a physical sense?

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

✅ Correct Answer: 1

______________ material is used to improve electrical contact in electrodes with the skin.

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

✅ Correct Answer: 3

Which among the following electrode gives high skin impedance as compared to ECG?

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

✅ Correct Answer: 2

Which of the following component is generally designed to have a very high value of input impedance to take care of high electrode impedance?

1. Montages
2. Filters
3. Electrodes
4. Preamplifiers

✅ Correct Answer: 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?

1. Unipolar
2. Bipolar
3. Monopolar
4. Nonpolar

✅ Correct Answer: 3

Which of the following is employed for a bipolar recording done?

1. Uni Channel EEG
2. Omni channel EEG
3. Non Channel EEG
4. Multi channel EEG

✅ Correct Answer: 4

EEG signals picked up by surface electrodes are usually larger as compared to ECG.

1. True
2. False
3.
4.

✅ Correct Answer: 2

A pattern of electrodes on the head and the channels they are connected to is called a montage. Montages are always ___________

1. inverse
2. random
3. symmetrical
4. asymmetrical

✅ Correct Answer: 3

Reference electrode for recording EEG is placed on __________

1. forehead
2. cervical
3. nasal
4. facial

✅ Correct Answer: 1

The typical value of calibration signal is ________

1. 10 uV/cm
2. 70 uV/cm
3. 50 uV/cm
4. 30 uV/cm

✅ Correct Answer: 3

Preamplifiers used in electroencephalograph have low gain and high noise characteristics for EEG.

1. True
2. False
3.
4.

✅ Correct Answer: 2

At what frequency is the notch filter in EEG machines sharply tuned to eliminate mains frequency interference?

1. 60
2. 90
3. 10
4. 70

✅ Correct Answer: 1

______________ is typical frequency range of standard EEG machines.

1. 70 to 140 Hz
2. 0.1 to 70 Hz
3. 0.05 to 0.1 Hz
4. 0.025 to 0.05 Hz

✅ Correct Answer: 2

Which of the following instrument is used for recording the chest-wall movements over the apex of heart?

1. Apexcardiograph
2. Ballistocardiograph
3. Electro-oculograph
4. Electro-retinograph

✅ Correct Answer: 1

The transducer required for recording these movements in apexcardiograph is similar to the electrocardiograph.

1. True
2. False
3.
4.

✅ Correct Answer: 2

Which of the following instrument is used for recording the movements imparted to the body with each beat of the heart cycle?

1. Apexcardiograph
2. Ballistocardiograph
3. Electro-oculograph
4. Electro-retinograph

✅ Correct Answer: 2

What is mounted on the table to convert the movements into corresponding electrical signals in BCG?

1. Oscilloscope
2. Sensing device
3. Pramplifier
4. Tape recorder

✅ Correct Answer: 2

________________ is the recording of the bio-potentials generated by the movement of eye ball.

1. Apexcardiography
2. Electro-oculography
3. Electro-retinography
4. Ballistocardiography

✅ Correct Answer: 2

What is used to pick EOG potentials?

1. Oscilloscope
2. Tape Recorder
3. Surface Electrodes
4. Preamplifier

✅ Correct Answer: 3

What is the frequency range of Chest-wall movements?

1. 0.025 to 0.05 Hz
2. 0.05 to 0.1 Hz
3. 0.1 to 20 Hz
4. 20 to 100 Hz

✅ Correct Answer: 3

Which of the following instrument is used for recording the change in potential when light falls on the eye?

1. Apexcardiography
2. Ballistocardiography
3. Electro-oculography
4. Electro-retinography

✅ Correct Answer: 4

One of the electrode is mounted on the contact lens and the other is placed to the skin adjacent to the outer cornea of the eye.

1. True
2. False
3.
4.

✅ Correct Answer: 1

Which of the following is useful in the diagnosis of the enlargement of the heart chambers and some type of valvular disorders?

1. Apexcardiograph
2. Ballistocardiograph
3. Electro-oculograph
4. Electro-retinograph

✅ Correct Answer: 1

Blood flow detectors based on Doppler shift start detecting foetal pulses as early as in which week of pregnancy?

1. tenth
2. eleventh
3. twelfth
4. ninth

✅ Correct Answer: 2

When it is possible to detect multiple pregnancies?

1. 10th week
2. 12th week
3. 15th week
4. 20th week

✅ Correct Answer: 4

Which of the following is the most reliable method for detecting FHR pattern?

1. Abdominal foetal electrocardiogram
2. Foetal phonocardiogram
3. Ultrasound technique
4. Foetal ECG with scalp electrode

✅ Correct Answer: 3

Signal processing for FHR determination can be based either on detecting the foetal heart valve motion or on detecting the heart wall motion in Abdominal foetal electrocardiogram technique.

1. True
2. False
3.
4.

✅ Correct Answer: 2

What is maximum ultrasound intensity of narrow beam transducer?

1. 15 mW/cm2
2. 20 mW/cm2
3. 25 mW/cm2
4. 30 mW/cm2

✅ Correct Answer: 3

What is the diameter of a narrow beam transducer?

1. 15 mm
2. 20 mm
3. 25 mm
4. 30 mm

✅ Correct Answer: 3

What is used to detect foetal heart movements in broad beam transducer?

1. Quartz crystal
2. Piezo electric crystal
3. Topaz crystal
4. Berlinite crystal

✅ Correct Answer: 2

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