Speed-limiting governors installed on auxiliary turbines are designed to limit maximum speed to what percentage of designed speed?

Speed-limiting governors installed on auxiliary turbines are designed to limit maximum speed to what percentage of designed speed?

• A. 100 percent
• B. 110 percent
• C. 125 percent
• D. 150 percent

Answer: (B)

Speed-limiting governors on auxiliary turbines are typically set to limit the maximum speed to 110 percent of the designed speed. This safety feature is crucial because it helps to prevent potential damage and failure of the turbine systems due to excessive speeds. The threshold of 110 percent provides a safe margin above the nominal operational speed, accommodating small fluctuations in load or speed while ensuring that the turbine can operate safely and reliably without risking mechanical failure. This percentage reflects industry standards that aim to balance operational efficiency with safety, addressing concerns related to wear and tear, vibrations, and thermal stresses that could arise from excessive speeds. The other percentages presented do not align with these safety standards for auxiliary turbines, making the selection of the 110 percent limit the most appropriate and widely accepted threshold for speed limitations.

Speed-limiting governors on auxiliary turbines are typically set to limit the maximum speed to 110 percent of the designed speed. This safety feature is crucial because it helps to prevent potential damage and failure of the turbine systems due to excessive speeds. The threshold of 110 percent provides a safe margin above the nominal operational speed, accommodating small fluctuations in load or speed while ensuring that the turbine can operate safely and reliably without risking mechanical failure.

This percentage reflects industry standards that aim to balance operational efficiency with safety, addressing concerns related to wear and tear, vibrations, and thermal stresses that could arise from excessive speeds. The other percentages presented do not align with these safety standards for auxiliary turbines, making the selection of the 110 percent limit the most appropriate and widely accepted threshold for speed limitations.