471. Which of the listed conditions aids in directing gland leakoff steam from the low-pressure propulsion turbine to pass through the gland exhaust condenser?

A gland exhauster fan maintains the vacuum necessary to direct leakoff steam from low-pressure turbine glands through the gland exhaust condenser; turbine steam pressure and pneumatic systems do not create this vacuum, and the gland exhaust condenser must be at a lower pressure than the glands to facilitate steam flow.