Biomedical Measurements and Monitoring Techniques

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What is the main difference between direct and indirect measurements?

Direct measurements are always more accurate than indirect measurements.

Direct measurements are only used in physics experiments, while indirect measurements are used in biology experiments.

Direct measurements compare an unknown quantity with a standard, while indirect measurements measure something other than the actual quantity. (correct)

Direct measurements involve using a null type instrument, while indirect measurements do not.

What does a null measurement rely on to determine the measured quantity?

The deviation between the measured value and the true value

The response of the instrument

The connection of the measuring instrument to the system

The zero or null indication of the instrument (correct)

How is the true value of an actual value calculated?

By comparing the measured value to the standard value (correct)

By dividing the measured value by the standard value

By observing the deviation of the measured value from the true value

By adding a calibration factor to the measured value

Which type of measurement involves comparing the measurand to a calibrated standard directly?

Direct measurement Signup and view all the answers

What type of signals take on a finite number of different values in a given range?

Digital signals Signup and view all the answers

In a null type instrument, what does a zero or null indication lead to?

Determination of measured quantity magnitude Signup and view all the answers

What is defined as a device that converts a physical quantity into an electrical quantity?

Transducer Signup and view all the answers

How does a deflection type instrument determine the quantity under measurement?

By providing a basis through deflection Signup and view all the answers

Which type of signal processing requires considerable input before producing any results?

Delayed-time signal processing Signup and view all the answers

In the context of measurements like cell cultures, why might several days be needed before obtaining an output?

Because delayed-time modes require substantial input Signup and view all the answers

Why do most medical measurands parameters have values much lower than conventional sensing parameters?

Due to the nature of the signals being measured Signup and view all the answers

What determines the morphology of internal organs noninvasively?

X-ray shadows Signup and view all the answers

Which mode is suitable for measuring slowly changing measurands like body temperature?

Sampling mode Signup and view all the answers

In the generating mode, how do sensors produce their signal output?

By directly taking energy from the measurand Signup and view all the answers

Which type of sensor uses the measurand to alter the flow of energy from an external source?

Photoconductive cell Signup and view all the answers

Biomedical Measurements and Monitoring Techniques

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