Concept:Each transducer is matched with the physical quantity it is typically used to measure.
Explanation:LVDT stands for Linear Variable Differential Transformer.
It works on the principle of mutual induction.
It converts linear displacement into an equivalent electrical signal.
Therefore, A matches II, which is Displacement measurement.
A piezoelectric pickup uses the piezoelectric effect to convert mechanical stress into electrical charge.
It is mainly used for measuring acceleration.
Therefore, B matches IV, which is Acceleration measurement.
A thermistor is a semiconductor device whose resistance changes with temperature.
It is widely used for temperature measurement.
Therefore, C matches I, which is Temperature measurement.
A capacitive transducer works by changing the area of plates, distance between plates, or dielectric medium.
It is commonly used for pressure measurement.
Therefore, D matches III, which is Pressure measurement.
Thus, the correct matching is A-II, B-IV, C-I, D-III.
Answer:Option B: A-II, B-IV, C-I, D-III.
