Question 34General Subjects - Assistant Engineer
70% to passWhen checking the oil level on a reciprocating air compressor fitted with a dipstick, under what conditions should the oil level be checked?
AWith the compressor running at speed and unloaded.
BWith the compressor running at speed and loaded.
CWith the compressor in the auto mode and currently not running.
DWith the compressor in the off mode incapable of starting.
AI Explanation
The correct answer is D) With the compressor in the off mode incapable of starting. When checking the oil level on a reciprocating air compressor, it is important to have the compressor in the off mode and incapable of starting. This ensures that the oil level is measured accurately, as the compressor needs to be completely stationary and not under any load or operating conditions. Checking the oil level with the compressor running (options A and B) or in auto mode (option C) could result in an inaccurate reading, as the oil level may be affected by the compressor's operation. Checking the oil level with the compressor in the off mode and incapable of starting is the safest and most accurate method.
Related Questions
Q447:What pressure drop across an air conditioning filter is indicative of a need to ... Q620:Which of the following fire extinguishing agents which may be found aboard ship ... Q536:For an electro-hydraulic cargo-handling pedestal-type deck crane, what event wou... Q639:Which single illustrated lathe tool could be used to turn down the stock in figu... Q431:A constant pressure range is maintained in the potable water system of many vess...
Ready to test your knowledge?
Take a General Subjects - Assistant Engineer Practice ExamOfficial Resources