Final answer:
The question is about the maximum limit of engine exhaust gas temperature (EGT) in reverse operation, but the given information is not sufficient to provide a specific answer.
Step-by-step explanation:
The question is asking about the maximum limit of engine exhaust gas temperature (EGT) in reverse. EGT is the temperature of the gases exiting the engine.
The student wants to know the temperature limit for reverse operation.
Unfortunately, the given information does not provide the specific answer.
The choices (a) and (b) indicate possible temperature values, but without additional context, it is not possible to determine the correct answer.
It is important to consult the engine's specifications or manuals to find the accurate EGT limit for reverse operation.