Discussion
An exhaust gas temperature limit of 900 degrees is exceeded by 45 degrees for 12 seconds. The exceedance recorded is
Answer: B
Correct answer: 945 degrees for 12 seconds
An exceedance is recorded as the peak value actually reached together with its duration, because that is what maintenance needs in order to assess the damage:
\[ 900 + 45 = 945\ \text{degrees, for } 12\ \mathrm{s} \]
The margin of 45 degrees alone does not say what temperature the turbine saw, and the limit of 900 alone says nothing about the event. Turbine blade life falls very steeply with temperature, so both the peak and the time at it govern whether a borescope inspection or a component change is required.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development