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Question

Which of the following is a primary criterion when choosing a sensor for monitoring temperature in a manufacturing process?

This question was previously asked in
RRB NTPC 2025 Graduate Level CBT 1 Question Paper (25-Mar-2026) (Shift 3)
The correct answer is

Accuracy of the sensor readings

When choosing a sensor for monitoring temperature in a manufacturing process, several factors need to be considered to ensure efficient and accurate monitoring. The most important of these factors, especially in a technical and precision-driven process such as manufacturing, is the accuracy of the sensor readings.

  1. Accuracy of the sensor readings:
    The accuracy of the sensor readings is crucial because it determines how close the measurements are to the actual temperature. In manufacturing processes, precise temperature control can directly affect product quality, safety, and energy efficiency. Therefore, prioritizing accuracy ensures that the temperature is maintained within required thresholds, leading to optimum process performance.
  2. Other Options:
    • Color of the sensor housing: This is generally not a factor in sensor performance. The housing color is typically for aesthetics or to distinguish sensors physically but does not affect the sensor's functionality.
    • Overall cost of the sensor: While cost is an important factor from a budgetary standpoint, it should never override the need for accurate and reliable readings, especially if the sensor's accuracy impacts process outcomes.
    • Physical size of the sensor: The size might matter for integration into space-constrained areas or for specific applications, but it is secondary to ensuring that the sensor provides accurate readings.

In conclusion, among the given options, accuracy of the sensor readings is the primary criterion because it ensures that the actual temperature is accurately monitored, which is vital for quality control and process efficiency in manufacturing.

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