Podcast
Questions and Answers
What should be the proper response of the watch engineer after finding the refrigeration compressor has blown the shaft seal?
What should be the proper response of the watch engineer after finding the refrigeration compressor has blown the shaft seal?
- Secure the compressor at once and close the suction and discharge valves
- Pump the system down and isolate the leak
- Tighten the shaft seal packing to reduce leakage, slow the compressor, and operate the expansion valves by hand until repairs can be made
- Close the suction valve, secure the compressor, and then replace the shaft seal (correct)
How should an oxygen and acetylene cylinders be properly stored?
How should an oxygen and acetylene cylinders be properly stored?
- Horizontal with the cylinder caps off
- Upright with the cylinder caps off
- Upright with the cylinder caps screwed on
- Horizontal with the cylinder caps screwed on (correct)
Why is live auxiliary steam normally attemporated before entering the feed heater of a flash evaporator?
Why is live auxiliary steam normally attemporated before entering the feed heater of a flash evaporator?
- To avoid thermal shock to the equipment (correct)
- To prevent steam leaks from occurring
- To increase the efficiency of the flash evaporator
- To reduce the pressure inside the feed heater
What is the cause of injection lag in a diesel engine?
What is the cause of injection lag in a diesel engine?
Which of the following operating conditions listed should be given priority attention by the watch engineer according to the text?
Which of the following operating conditions listed should be given priority attention by the watch engineer according to the text?
What is the purpose of a lube oil filter in a diesel engine?
What is the purpose of a lube oil filter in a diesel engine?
If a watch engineer needs to slow a compressor down due to a blown shaft seal, what action should they take according to the text?
If a watch engineer needs to slow a compressor down due to a blown shaft seal, what action should they take according to the text?
What governor characteristic is used to maintain frequency in diesel engines driving alternators operating in parallel?
What governor characteristic is used to maintain frequency in diesel engines driving alternators operating in parallel?
What fuel oil ignition method is commonly found on automatically fired auxiliary boilers aboard merchant vessels?
What fuel oil ignition method is commonly found on automatically fired auxiliary boilers aboard merchant vessels?
What does a pneumercator measure in a marine context?
What does a pneumercator measure in a marine context?
