GATE 2024 IN – Question 21
A linear transducer is calibrated over the ranges shown: input temperature 50–150 °C and output current 4–20 mA. Its gain is ______ mA/°C (two decimal places).
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Show answer and explanation
Correct answer: 0.15 to 0.17
Explanation
The input span is $150-50=100$ °C; the output span is $20-4=16$ mA. The linear slope is $16/100=\boxed{0.16}$ mA/°C. The 4 mA live-zero offset does not enter the gain.