Instructions:
In groups of three, attempt, submit on the e-Learning platform, and get ready
to present a 10-minute presentation during the following lecture period (25th September 2025). Only one submission is allowed per group (registration number of all group members should be included in the attachment).
Question One
A sound meter uses a
microphone to convert sound waves into an electrical signal that can be
displayed on a meter. Based on this system, identify which component acts as
the sensor and which acts as the transducer, and explain the key distinction
between them.
Question Two
A thermocouple produces a small voltage that is proportional to the temperature difference
between its hot and cold ends. Based on this description, classify the
thermocouple and justify your classification.
Question Three
A digital sensor is used to measure the temperature. If the instrument has an accuracy of ±0.5∘C, and the actual temperature of the measured object is 50 degrees centigrade. If the reading on the sensor is 50.5 degrees centigrade. Calculate:
- absolute error of the measurement.
- percentage error of the measurement.
- determine if the reading is within the accuracy range of the instrument.
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