Question 404Steam Plants - Assistant Engineer

70% to pass

Which of the following conditions must exist before the superheating of saturated steam can occur in a steam propulsion boiler?

AThe firing rate of the boiler must be increased.

BThe steam must be directed to an area separate from the steam drum.

CThe flow of feed water to the boiler must be increased.

DThe economizer must be on line.

AI Explanation

The correct answer is B) The steam must be directed to an area separate from the steam drum. Superheating of saturated steam can occur in a steam propulsion boiler when the steam is directed to an area separate from the steam drum, such as a superheater. This allows the steam to be heated beyond its saturation temperature, leading to superheating. Increasing the firing rate (A) or feed water flow (C) would not directly cause superheating, and the economizer (D) is not the primary factor in superheating.