Podcast
Questions and Answers
What is the main difference between direct and indirect measurements?
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?
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?
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?
Which type of measurement involves comparing the measurand to a calibrated standard directly?
What type of signals take on a finite number of different values in a given range?
What type of signals take on a finite number of different values in a given range?
In a null type instrument, what does a zero or null indication lead to?
In a null type instrument, what does a zero or null indication lead to?
What is defined as a device that converts a physical quantity into an electrical quantity?
What is defined as a device that converts a physical quantity into an electrical quantity?
How does a deflection type instrument determine the quantity under measurement?
How does a deflection type instrument determine the quantity under measurement?
Which type of signal processing requires considerable input before producing any results?
Which type of signal processing requires considerable input before producing any results?
In the context of measurements like cell cultures, why might several days be needed before obtaining an output?
In the context of measurements like cell cultures, why might several days be needed before obtaining an output?
Why do most medical measurands parameters have values much lower than conventional sensing parameters?
Why do most medical measurands parameters have values much lower than conventional sensing parameters?
What determines the morphology of internal organs noninvasively?
What determines the morphology of internal organs noninvasively?
Which mode is suitable for measuring slowly changing measurands like body temperature?
Which mode is suitable for measuring slowly changing measurands like body temperature?
In the generating mode, how do sensors produce their signal output?
In the generating mode, how do sensors produce their signal output?
Which type of sensor uses the measurand to alter the flow of energy from an external source?
Which type of sensor uses the measurand to alter the flow of energy from an external source?
