15 Questions
What is the main difference between direct and indirect measurements?
Direct measurements compare an unknown quantity with a standard, while indirect measurements measure something other than the actual quantity.
What does a null measurement rely on to determine the measured quantity?
The zero or null indication of the instrument
How is the true value of an actual value calculated?
By comparing the measured value to the standard value
Which type of measurement involves comparing the measurand to a calibrated standard directly?
Direct measurement
What type of signals take on a finite number of different values in a given range?
Digital signals
In a null type instrument, what does a zero or null indication lead to?
Determination of measured quantity magnitude
What is defined as a device that converts a physical quantity into an electrical quantity?
Transducer
How does a deflection type instrument determine the quantity under measurement?
By providing a basis through deflection
Which type of signal processing requires considerable input before producing any results?
Delayed-time signal processing
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
Why do most medical measurands parameters have values much lower than conventional sensing parameters?
Due to the nature of the signals being measured
What determines the morphology of internal organs noninvasively?
X-ray shadows
Which mode is suitable for measuring slowly changing measurands like body temperature?
Sampling mode
In the generating mode, how do sensors produce their signal output?
By directly taking energy from the measurand
Which type of sensor uses the measurand to alter the flow of energy from an external source?
Photoconductive cell
Explore concepts related to noninvasive measurements of internal organs, pulmonary volumes, sampling, and continuous modes in biomedical monitoring techniques.
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