A signal which can vary continuously is called...

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Multiple Choice

A signal which can vary continuously is called...

Explanation:
A signal that can vary continuously is called analog. Analog signals can take any value within a given range, like a voltage that smoothly changes from 0 to 10 volts or a current that ranges from 4 to 20 mA. This is different from discrete signals, which change in distinct steps and do not have values in between. Digital signals, on the other hand, are a type of discrete signal that use a finite set of levels to represent information, typically corresponding to binary states. Binary is the simplest form of digital signaling, usually two states such as 0 and 1. In practical terms, sensors like thermocouples or pressure transducers produce analog outputs, while switches and relays provide digital on/off signals.

A signal that can vary continuously is called analog. Analog signals can take any value within a given range, like a voltage that smoothly changes from 0 to 10 volts or a current that ranges from 4 to 20 mA. This is different from discrete signals, which change in distinct steps and do not have values in between. Digital signals, on the other hand, are a type of discrete signal that use a finite set of levels to represent information, typically corresponding to binary states. Binary is the simplest form of digital signaling, usually two states such as 0 and 1. In practical terms, sensors like thermocouples or pressure transducers produce analog outputs, while switches and relays provide digital on/off signals.

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