Minnesota Special Engineer Boiler License Practice Exam

What information does a tri indicator provide to the boiler operator?

1. Temperature, voltage, and flow rate

2. Temperature, pressure, and altitude of water

3. Flow rate, pressure, and temperature

4. Pressure, level, and temperature

The correct answer is: Temperature, pressure, and altitude of water

A tri indicator is a device used in boiler operations that provides critical information regarding the boiler's performance and safety. The specific combination of temperature, pressure, and altitude of water is essential because these parameters help the operator monitor the overall condition of the system. Temperature is vital for understanding how well the boiler is heating water and ensuring it operates within safe limits. Pressure readings help in gauging the steam generation process and ensuring that the boiler is not in a dangerous overpressure state, which can lead to catastrophic failures. Altitude of water is particularly relevant in applications where the elevation can affect boiling points and operational efficiency, especially in mountainous regions. This combination of information allows the boiler operator to make informed decisions about operating conditions, maintain safety standards, and adhere to regulatory compliance. Other options, which include parameters like flow rate or voltage, while pertinent to specific operational aspects, do not capture the complete set of crucial indicators that a tri indicator is designed to monitor in a boiler environment.