Question

The device that can change the format of a signal without changing the energy form is known as:

• A. Converters
• B. Transducers
• C. Actuators
• D. Controllers

Hint:

Converters change the \textbf{form} of a signal (like analog to digital), while transducers change the \textbf{type of energy} (like thermal to electrical).

Answer 1

The Correct Option is A

A converter is a device that changes the format of a signal without altering its energy form. This typically refers to signal type conversions, such as:
- Analog to digital conversion (ADC)
- Digital to analog conversion (DAC)
- Voltage level conversions (e.g., TTL to RS232)
In all these cases, the energy type (electrical) remains the same, but the signal format changes.
Let’s evaluate the other options:
- Transducers change one form of energy into another (e.g., temperature to voltage), which is not what the question asks.
- Actuators convert control signals into mechanical motion, again involving a change in energy form.
- Controllers process control logic to determine system response — they don’t typically deal with signal format conversion alone.
Thus, the correct device that fits the given definition is a converter.