Question

Directions: It consists of two statements one labeled as statement I and the other as statements II. Examine these two statements carefully and select the correct answer using the code given below.

Statement I: Piezoelectric transducers have very good frequency response.

Statement II: Piezoelectric transducers can be used for measurement of both dynamic and static phenomena.

1. Both statements I and statement II are individually true and statement II is the correct explanation of statement I
2. Both statement I and statement II are individually true but statement II is not the correct explanation of statement I
3. Statements I is true but statement II is false
4. Statement I is false but statement II is true

Answer 1

Correct Answer - Option 3 : Statements I is true but statement II is false

Statement I:

A piezoelectric transducer (also known as a piezoelectric sensor) is a device that uses the piezoelectric effect to measure changes in acceleration, pressure, strain, temperature or force by converting this energy into an electrical charge.

It has very high sensitivity. So, it has high-frequency response i.e. the parameters change very rapidly.

Therefore, statement I is true.

Statement II:

The steady state response of piezo-electric transducer to a constant displacement is zero. Hence, it cannot be used for measurement of static displacement and only used for dynamic displacement.

Therefore, statement II is false.