124. If steam is admitted to the main propulsion turbine with the jacking gear engaged, which of the following problems can occur?

Admitting steam with the jacking gear engaged applies full turbine torque through a low-speed, low-torque gear, resulting in destruction of the jacking gear. The jacking gear is designed for slow rotation during maintenance and cooldown, not for propulsion loads, and is vulnerable to overload when subjected to main turbine torque.