Question

A piezoelectric type accelerometer has a sensitivity of 100 mV/g. The transducer is subjected to a constant acceleration of 5 g. The steady-state output of the transducer will be:

• A. Zero
• B. 100 mV
• C. 0.5 V
• D. 5 V

Hint:

To calculate the output of a sensor, multiply the sensitivity by the input quantity. Convert units when needed (e.g., mV to V).

Answer 1

The Correct Option is C

The sensitivity of the piezoelectric transducer is given as:
\[ \textbf{100 mV/g} \]
This means the transducer generates an output of 100 millivolts for every 1 g of acceleration.

The applied acceleration is: \[ \textbf{5 g} \]
So, the output voltage will be: \[ \text{Output} = \text{sensitivity} \times \text{acceleration} = 100\,\text{mV/g} \times 5\,\text{g} = 500\,\text{mV} = \textbf{0.5 V} \]
Thus, the steady-state output voltage is 0.5 V.