Question 402Steam Plants - Assistant Engineer

The correct answer is C) Thermal. An operating steam boiler is associated with thermal energy conversion. The heat generated by the combustion of fuel (e.g., oil, gas, or coal) is used to convert water into high-pressure steam. This steam is then used to drive turbines or other machinery, converting the thermal energy into mechanical energy. The other answer choices do not accurately describe the primary energy conversion process taking place in a steam boiler system.