Which of the following statements is true regarding steam engines?

Steam engines are recognized for their simplicity and rugged design. They operate based on the principle of converting thermal energy from steam into mechanical work, which allows for a straightforward construction without the complexities of modern electronic components. This simplicity contributes to their durability and reliability, making them well-suited for various applications, especially in environments where robustness is essential.

The construction of a steam engine involves fewer intricate electronic systems, instead relying on mechanical parts like valves, pistons, and connecting rods, making them easier to maintain and repair. Their ruggedness means that they can withstand rough handling and harsh operational conditions, which is advantageous in many industrial applications.

Other options mention aspects that do not typically apply to steam engines. For instance, they are not heavily reliant on electronic components, nor do they usually operate at fast rotational speeds compared to more modern engines. Additionally, steam engines do not require constant external power in the way that many electronic systems do; they generate their own power from the steam produced by heating water.