0-10 VDC, 4-20 mA, and 3-15 psi are examples of what type of signal?

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Multiple Choice

0-10 VDC, 4-20 mA, and 3-15 psi are examples of what type of signal?

Explanation:
These are analog signals. Each example represents a continuous value that can vary smoothly over a range rather than switching between fixed, discrete states. A voltage in the 0-10 VDC range can take any value within that span, not just on or off. A 4-20 mA current loop conveys a proportional measurement across its range, remaining continuous as the process variable changes. A pressure reading like 3-15 psi is typically converted to a continuous signal to reflect intermediate pressures accurately. This stands in contrast to digital signals, which are limited to discrete states, or pulse signals that are made of on/off bursts.

These are analog signals. Each example represents a continuous value that can vary smoothly over a range rather than switching between fixed, discrete states. A voltage in the 0-10 VDC range can take any value within that span, not just on or off. A 4-20 mA current loop conveys a proportional measurement across its range, remaining continuous as the process variable changes. A pressure reading like 3-15 psi is typically converted to a continuous signal to reflect intermediate pressures accurately. This stands in contrast to digital signals, which are limited to discrete states, or pulse signals that are made of on/off bursts.

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