What extreme conditions does the turbine rotor experience?

The turbine rotor in a gas turbine engine indeed experiences severe centrifugal loads and extreme high temperatures during operation. As the rotor spins at high speeds to generate thrust or power, it undergoes significant centrifugal forces that act outward from the center of rotation. These forces can be extremely high due to the rapid rotation, which places substantial stress on the materials making up the rotor.

In addition to the centrifugal loads, turbine rotors are subjected to extreme high temperatures — often exceeding 1,000 degrees Celsius (1,832 degrees Fahrenheit) — as they are exposed to the hot gases produced by the combustion of fuel. This environment requires advanced materials and cooling techniques to ensure the rotor maintains structural integrity and performance across its operational lifespan.

The other options do not adequately represent the actual operational conditions of a turbine rotor. High pressure and low temperature may affect other components but are not characteristic of the rotor's environment. Low pressure and ambient temperature do not reflect the intense conditions of turbine operation, and stating that there are no significant loads disregards the physical realities of centrifugal forces that are crucial to its function.