The following brochures contain oral questions. This will occur when the lube oil in the crankcase is heated by a “hot spot” and lube oil coming into contact with this will be evaporated. These levels of stress could even cause crankshaft failure. A Guide to Welding Electrodes on Ships - Part 1. The second event is the ignition of this white mist by either the same or another hot spot within the crankcase. Academic Papers; Uniforms. This vacuum causes the water plug to be drawn into the closed end of the pipe with increasing velocity producing high impact forces on the pipework. Very very good feed back I am receiving for both my EK M, written and Oral examinations of MMD. Below is an IED unit 1 engineering quiz that is perfect for trying to see just how much one has been attentive in class. Previous Certificate & Seagoing Service:meet the requirements for certification as an officer in charge of an engineering watch and have not less than 36 months approved seagoing service, of which not less than 12 months shall have been served as an engineer officer in a position of responsibility while qualified to serve as second engineer officer. Marine Engineering interview questions :- 1.What is motor bike c.c. It is possible that the air distributor does reverse as expected, but that the required air start valve would not open to rotate the engine in the new direction. Target Consumer. X. We will put them in a brochure with a link to you. Certification process. Fatigue cracks can grow faster when the material is harder, as the dislocations in the metal concentrate the stress on a smaller area of the material structure, hence any hardening of the crank pins must not be applied to the highly stressed radii areas. This pressure rise is limited by the statutory use of relief doors fitted to the crankcase. are reversed. The stress can be increased locally by a surface defect, or even an extreme stress concentration caused by high applied stress. The size of this radius will significantly influence the local stress levels, and should be closely monitored during crankshaft construction, and possible crankpin surface repairs by grinding. Thanks with best regards to you. When the bridge telegraph is placed in Stop, the fuel is prevented from injecting as the fuel pump puncture valves are energised. Fatigue cracking occurs when the primary cause of crack propagation is due to the fluctuating nature of the stress applied to the component. The resultant white mist is within the explosive range, and is thus flammable. 2. Time. There are no answers to these questions. Following this the trip reset button would be pressed. State how overheating might be indicated other than by mist detector ? Our book servers hosts in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Your email address will not be published. When the bridge telegraph is moved to  an ahead command, the air start and fuel cams are placed in the required direction, and the start command is given. Harsha Sharma . Hence the first event is the production of an explosive mixture. The following factors could produce fatigue cracking: The fitting of either a detuner or vibration damper will reduce the vibration levels of the crankshaft when operating in areas of high torsional vibration, such as close or within a critical speed range. Once the air start is reversed, the engine will start as detailed for the ahead start. For more information, select what you need to apply for below. slow ahead, full ahead, etc. Loves to brag about the places that i have been too. Air start distributor not reversing. Low air pressure at engine manifold. The engine would again be tested in the astern direction to test if a starting air valve has failed to open. This impact force can be high enough to rupture the pipeline. Marine Boilers Class 2 CoC Uk Oral Exam Questions. Explain the term water hammer indicating possible effects on the system ? For large propulsion engines the Bridge Control is achieved by using the telegraph to select the desired speed and direction. Tagged Engine Troubleshooting, Marine Engineering Practice. Water hammer occurs when steam is admitted into a cold pipeline. Page of 1. Do give it a shot and see if you have what it takes to tackle the upcoming engineering exam finals. Please see top of page for information on new Transport Canada procedures, in place, on a temporary basis, until new Marine Personel Regulations (MPR2019) come into force, expected, summer 2019. No air pressure at engine manifold. The initiation site will be where the local stress is high enough to increase the minute cracks which occur on the metal surface. Shirts & Trousers; Marine Merchant Navy Epaulettes. Once the engine is turning above the starting speed, the air is closed and fuel is admitted. The critical speed of a shaft occurs when the shaft rotational speed is at or close to resonant conditions. MAN B&W recommend that: The effective lubrication of the cylinder liner and piston assembly requires a constant lubricant feed over the whole liner surface, and that piston movement will generate the oil pressures required to separate the surfaces. Meet medical, eyesight, sea service and course requirements. Question and Answer for Oral Exam, Part – 1 November 16, 2014; Marine Engineer Officer Class- 1 (Unlimited) CoC Oral Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014; Marine Engineer Officer Class-2 & 1 (Unlimited) CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014 Stop the LO circulating pump. Title: Marine Engineer Class 3 Exam Questions Author: Julia Eichmann Subject: Marine Engineer Class 3 Exam Questions Keywords: Marine Engineer Class 3 Exam Questions,Download Marine Engineer Class 3 Exam Questions,Free download Marine Engineer Class 3 Exam Questions,Marine Engineer Class 3 Exam Questions PDF Ebooks, Read Marine Engineer Class 3 Exam Questions PDF Books,Marine Engineer Class … The valves from the air receiver would be checked, and opened if found shut. A. monel The doors also perform the added function of preventing fresh air ingress into the crankcase where hot burning gases are present, by the quick closing action of the relief door. Questions and Answers for Marine Engineers help to pass exam. The steam condenses producing both water, and a vacuum (when the water seals the pipeline from the steam supply). Water hammer is avoided by slowly admitting the steam into the cold line, and draining/venting the cold line to minimise the vacuum forming, and assist in draining the condensate. Search. Uniforms for India. When the oil mist is ignited, a crankcase explosion will occur, which will raise the pressure within the crankcase. Such levels of stress are possible when the stress is concentrated at section changes. All Discussions only Photos only Videos only Links only Polls only Events only. Question and Answer for Oral Exam, Part – 1 November 16, 2014; Marine Engineer Officer Class- 1 (Unlimited) CoC Oral Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014; Marine Engineer Officer Class-2 & 1 (Unlimited) CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.02 November 16, 2014 READ MEO Class 4B Exam Questions and Answer of MEP. As the explosion is an uncontrolled event, then great care must be taken to ensure the safety of the engineers within the engine room. 2. These doors will open when the pressure rises above 0.02 – 0.1 bar, and prevent the over-pressure of the engine structure. MEO Class 1; MEO Class 2; MEO Class 4; MMD – Nautical. These are marine engineering questions and answers which may look simply but might be difficult to the young professionals. marine engineer class 2 exam questions is available in our book collection an online access to it is set as public so you can download it instantly. ASM / Masters; UK MCA – Engineering. ASM / Masters; UK MCA – Engineering. Marine Uniforms. Your email address will not be published. Required fields are marked *. Shut the starting air, and engage the turning gear. Collapse. Torsional vibrations are inherent within diesel engines, due to the varying torque produced by the piston and crank arrangement from each cylinder. Class IV Level ; New Management Level. The shut down panel would be examined, and if a trip is active the cause would be investigated and system made operational. marine-engineer-class-2-exam-questions 1/5 PDF Drive - Search and download PDF files for free. Home » General Engineering Knowledge » Questions and Answers for Marine Engineers – Part 1, Questions and Answers for Marine Engineers – Part 1. Below are marine engineering questions and answers which you may likely come across someday. Sticking fuel linkage. Sample Questions – Revised Second Class Calculation Questions Write down the equations, show the variables with the correct units, and show your steps would help to obtain the correct answers and improve your marks. This wear down will increase the bending stress on the propeller shaft, and the external moment at the engine / shaft interface, increasing the crankshaft stresses. All air compressors would be started, and air usage restricted to engine manoeuvring only. Excessive crankshaft bending due to a main bearing failure, which increases the crankshaft bending stresses. How to Identify Metals in Engine Room? We use cookies to ensure that we give you the best experience on our website. The atmosphere inside a crankcase is stable and will not allow combustion or an explosion to occur as there is no ignition or fuel source. Water hammer occurs when steam is admitted into a cold pipeline. Marine Engineer Class 2 Exam Questions related files: 6e8c2adf86cefe1fb0c54800dbcc8135 Powered by TCPDF (www.tcpdf.org) 1 / 1 When the crankshaft is subjected to these high stresses, the small defects present within the shaft could develop and propagate into cracks that could lead to shaft failure. Diesel Engines 1 Diesel Engines 2 Diesel Engines 3 Diesel Engines 4 Diesel Engines 5 Diesel Engines 6 Diesel Engines 7 Diesel Engines 8 Diesel Engines 9 Diesel Engines 10 Diesel Engines 11 Diesel Engines 12 Diesel Engines 13 Diesel Engines 14 Diesel Engines 15 Diesel Engines 16 Diesel Engines … Read More → Move away from the crankcase doors immediately, Reduce speed to slow, and ask the bridge to stop, When the engine has stopped, close the fuel supply, Lock engine room entry doors and keep away from them, Do not open the crankcase for at least 20 minutes after stopping the engine, and ensure that the oil mist detector alarm (or bearing temperature monitor) has reset. By virtue of GOD and your helpful study materials, if I shall complete my MEO Class II( Motor ), First Class,then I want to give feed back to the upcoming candidates. Engineering Exams. Questions: 20 | Attempts: 330 | Last updated: Aug 6, 2019 . MEO Class 2 Question Papers, Engineering Knowledge General, Marine Engineering Practice, Engineering Knowledge Motor, Ship Safety, Environmental Protection. If the engine fails to reverse the following points would be investigated, and remedial action taken. All Time Today Last Week Last Month. Uniforms for India. A Guide to Understanding New Designations in AWS Filler Metal Classifications. ENGINEERING KNOWLEDGE GENERAL (EKG) EKG 1 EKG 2 EKG 3 EKG 4 EKG 5 EKG 6 EKG 7 EKG 8 EKG 9 EKG 10 EKG 11 EKG 12 EKG 13 EKG 14 EKG 15 EKG 16 EKG 17 ENGINEERING KNOWLEDGE STEAM (EKS) EKS 1 EKS 2 EKS 3 EKS 4 EKS 5 EKS 6 ELECTRICAL TECHNOLOGY (ET) ET 1 … Defect growth from a small surface defect into a crack that propagates through the shaft material require high levels of stress. The detuner will change the stiffness of the shaft and hence the natural frequency, thus separating the excitation frequency from the component’s natural frequency, whereas the damper will absorb the vibration within the shaft, reducing the effects of the torsional vibration. new posts. They seems simple. The rapid pressure rise within the crankcase can cause the engine structure to be blown apart, causing physical damage, and the resultant flame travelling across the engine room space causing personnel injury. This will admit starting air to the engine. Lukeas2016. Love Dogs a lot. What is the Marine Engineer 4 th class exam procedure like, and do you have any example questions? A person using the services of a professional person or organization. I sail with one of the leading shipping companies as engine officer. The feed rate of the lubricant is regulated usually by the speed of the engine, which will cause a mismatch between actual lube oil requirements over a wide range of engine operation, with usually too little an amount of oil injected at low loads and during engine load changes. ? MEO Class 1; MEO Class 2; MEO Class 4; MMD – Nautical. Shirts & Trousers; Marine Merchant Navy Epaulettes. Low fuel pressure at the engine manifold. - Observation and Spark Test. Filter. Sample Question. Collapse. Syllabus. The steam condenses producing both water, and a vacuum (when the water seals the pipeline from the steam supply). The action of the fuel linkage would be checked during the start sequence. Filtered by: Clear All. The crack progress is shown as smooth, rippled formation known as striations or beach marks, whilst the sudden failure is a classic brittle fracture with rough appearance. Fatigue strength is reduced when tensile stress are present, so the radii areas are often cold rolled to ensure that the fatigue strength in these areas are increased. CoC Class 1 & 2 Marine Engineer Officer (Part B) COURSE AIMS: The Combined Class 2 & 1 Engineer Officers course will lead to the issue of Class 2 & 1 Certificate of Competency (CoC), issued by the Maritime & Port Authority (MPA) of Singapore, upon successful completion of written examinations at SMA and oral examinations at MPA. When the bridge telegraph is moved to an astern direction, the air start and fuel cams The effects of such vibrations is to increase the shear stress and hence total stress levels carried by the crankshaft in service, when other stresses such as bending and combustion loads are present. This would be investigated by turning the engine in the ahead direction so that it stops in a new position. The quantity of fuel admitted will depend on the position of the telegraph handle, i.e. The answer below is no longer valid. These can be reduced by ensuring a smooth surface finish to all area where high stress is applied especially in the web/pin radii area, These should be minimised whenever possible, and the oil hole opening have wide and smooth radii. Marine Engineer Class 2 Exam Questions Author: programafaixalivre.org.br-2021-01-11T00:00:00+00:01 Subject: Marine Engineer Class 2 Exam Questions Keywords: Marine, Engineer, Class, 2, Exam, Questions Created Date: 1/11/2021 3:16:03 PM The gear would be removed if found engaged. Experience 1969 - 2020 in the marine industry Marine Engineers and Superintendents Technical Support Thanks lot to you, I am highly Grateful for your feed back. The fuel system would be investigated, and all valves checked to be opened, and all booster and supply pumps checked for running. Look for answers in books, instructions, register documents, the Internet. You could not unaided going following ebook accretion or library or borrowing from your connections to open them. Previous template Next. this post will help to build up a basic understanding and to become familiar to such question . Class IV Level ; New Management Level. Any valve found faulty would be removed, freed and refitted. If the crankshaft alignment is completely straight then the bending stresses are minimal, but should uneven main bearing wear down occur, then these bending stresses will greatly increase. Education & Training:have complete… This could indicate that the air compressors are either not working or excess air is being used. Ample viscosity to separate the surfaces under high loading conditions, Sufficient alkaline reserve to neutralise the acids formed by combustion of residual fuel oil, High levels of detergent to maintain piston ring cleanliness and free ring movement, A level of anti wear properties to minimise micro seizure. If the distributor is not moving, then the air servo cylinder would be checked to ensure that it is free to move, and that air is being admitted and vented as required to achieve the movement required. Posts; Latest Activity . Marine Uniforms. Testing of the boiler water is important to determine that: Treatment of the boiler water with chemicals will ensure: The operational stresses present within the crankshaft is influenced by the bending stresses present. To minimise the possibility of such defects, then only a frictional grip is permitted under Classification Rules for crankshaft construction, hence pins, keys, etc are not allowed. This will be an additional advertisement for you as an engineer. This torque variation is further compounded by the arrangement of the firing order of the crankshaft. a chief engineer of a fifth class plant; or; a shift engineer of a fourth class plant. The evaporated oil then rises within the crankcase, and then condenses in a cooler part of the crankcase. Air start valve not opening. The engine controls would be moved ahead and astern whilst observing the movement of the air start distributor. The normal effect is for the oil to reduce in alkalinity away from the injection point, thus if the oil becomes acidic then high corrosive wear rates will result. Locate the “hot spot” (source of the oil overheating), The oil is injected at defined points which can lead to an oversupply at the feed points, and an under supply away from these points, The residual fuel normally used contains acids and abrasives that will reduce the lubrication properties of the oil, The normal operation of the piston will cause the piston movement to stop at top dead centre, causing any oil pressure developed between the ring and liner to collapse, The high temperatures present at top dead centre reduce the effectiveness of the lubricant. The file section changes the torsional vibration of the air start and fuel cams are reversed ignition... Before causing sudden failure these are marine Engineering questions and answers for marine Engineers help to build a! Air compressors are either not working or excess air is being used common areas of overheating is the method. 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