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A pressure transducer is calibrated to output 0.50 Vdc per 100 psig. What is the system pressure when the measured voltage at the sensor output is 3.0 Vdc?

A. 200 psig
B. 250 psig
C. 1000 psig
D. 600 psig

Answer :

To find the system pressure when the measured voltage at the sensor output is 3.0 Vdc, follow these steps:

1. Understand the Calibration: The pressure transducer is calibrated to output 0.50 Vdc for every 100 psig (pounds per square inch gauge). This means there is a direct relationship between voltage and pressure.

2. Determine the Voltage to Pressure Ratio: Since 0.50 Vdc corresponds to 100 psig, you can think of it as a ratio. For every 0.50 Vdc, there is an increase of 100 psig in pressure.

3. Find the Pressure for 1 Vdc: To find out what one volt corresponds to in terms of pressure:
[tex]\[
\frac{100 \text{ psig}}{0.50 \text{ Vdc}} = 200 \text{ psig per Vdc}
\][/tex]
So, each volt represents 200 psig.

4. Calculate the Pressure for 3.0 Vdc: Now, multiply the measured voltage by the pressure per volt:
[tex]\[
3.0 \text{ Vdc} \times 200 \text{ psig per Vdc} = 600 \text{ psig}
\][/tex]

Therefore, the system pressure when the measured voltage is 3.0 Vdc is 600 psig.

The correct answer is D. 600 psig.

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