Читайте также:
|
Wrong
The correct answer is: The oil pressure in the system falls
Before starting the circulation of lube oil, the oil level in the oil reservoir must be:
| a) | Higher than normal | |
| b) | Normal | |
| c) | Lower than normal |
Wrong
The correct answer is: Higher than normal
During the pre-startup operation, the compressor should be started before the lube and the seal oil circulation has commenced.
| a) | True | |
| b) | False |
Wrong
The correct answer is: False
If the seal oil pressure is lower than the gas pressure, what would happen?
| a) | The seal oil temperature will increase too high. | |
| b) | The gas temperature will increase too high. | |
| c) | The gas will leak through the seal. | |
| d) | All the above |
Wrong
The correct answer is: The gas will leak through the seal.
Maintaining the oil level in the seal oil head tank at the design value is important to:
| a) | Ensure pressure difference between the seal oil and the gas | |
| b) | Avoid damage to the head tank | |
| c) | Ensure that the seal oil pressure is the same as that of the lube oil pressure |
During the oil circulation, the lube and the seal oil filters should be inspected to ensure that:
| a) | No air is trapped inside the filters | |
| b) | The differential pressure across the filter is normal | |
| c) | Both a and b |
The purging of the compressor casing is done to:
| a) | Remove any oxygen that may be present in the casing | |
| b) | Remove inert material from the casing | |
| c) | Introduce oxygen into the casing | |
| d) | Introduce inert gas into the casing |
Wrong
The correct answer is: Remove any oxygen that may be present in the casing
When the oil level in the seal oil head tank fluctuates rapidly, it may indicate gas leak through the seal.
| a) | True | |
| b) | False |
Wrong
The correct answer is: True
The gas must be introduced slowly to the compressor because:
| a) | There may be an excessive increase in the temperature of the compressor | |
| b) | There may be fluctuations of the oil level in the seal oil head tank | |
| c) | There may be some condensate trapped in the casing |
Wrong
The correct answer is: There may be fluctuations of the oil level in the seal oil head tank
The air present in the surface and the gland steam condensers is usually removed by:
| a) | An ejector | |
| b) | A pump | |
| c) | A turbine | |
| d) | A compressor |
Wrong
The correct answer is: An ejector
Дата добавления: 2015-08-27; просмотров: 43 | Нарушение авторских прав
| <== предыдущая страница | | | следующая страница ==> |
| Cultural Revolution | | | GENERAL TECHNOLOGICAL PROCESSES |