Question 209Steam Plants - Assistant Engineer70% to pass
Bi-color water level indicators, connected directly to the boiler drum, operate on the principle of _______________.
AI Explanation
The correct answer is D) different refractive properties of steam and water.
Bi-color water level indicators work on the principle of the different refractive properties of steam and water. Steam has a different refractive index compared to water, so the boundary between the two fluids is visually detectable. This allows the operator to easily monitor the water level in the boiler drum. The other answer choices do not accurately describe the operating principle of these water level indicators.
Related Questions
#207 In a boiler water gage glass, a ball check valve is installed on the _______________.#208 The items labeled "D" and "M" as indicated on the illustration are commonly called _______________. Illustration SG-0020 #210 Which of the listed problems will happen when the water level of a fire-tube type auxiliary boiler approaches the crown sheet? #212 Which of the following statements concerning fire-tube boilers is correct? #213 The tube sheets installed in a fire-tube auxiliary boiler are normally connected by _______________.