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Consider the following statements for piezoelectric materials: 1. All piezoelectric materials are ferroelectric materials also. 2. Piezoelectric materials have a high value of dielectric constant. Which of the above statements is/are correct?
World Bank has employed major dimensions to construct measures of governance. These dimensions are:
1. Voice and Accountability - measuring political, civil and human rights
2. Instability an d violence - measuring the likelihood of violent threats to or changes in government, including terrorism
3. Government effectiveness - measuring the competence of the bureaucracy and the quality of public service delivery
4. Regulatory burden - measuring the incidence of market, unfriendly policies
5. Rule of law - measuring the quality of contract enforcement, the police, and the courts, as well as the likelihood of crime and violence
Select the correct answer:
A piezoelectric transducer has a capacitance of 1500 pF and leakage resistance of 105 MΩ. The oscilloscope used for read-out has a resistance of 1 MΩ in parallel with a capacitance of 500 pF. What is the time constant of the entire system ?
A piezoelectric transducer is used as an ignition source for a cigarette.
Consider the following statements: Piezoelectric transducer has a) a very good HF response b) typical output voltage of the order of  1 mV to 30 mV per unit of acceleration c) no requirement of external power and is self-generating d) no response for static conditions Which of the above statements are correct?
Which of the following is NOT a Piezoelectric transducer material?
Piezoelectric transducer consists of _________
A piezoelectric transducer has a _________
What type of energy conversion does a piezoelectric transducer perform?
In piezoelectric strain transducer voltage developed is _______________ to strain applied.