Which of the following is not true about the preparations made for marine diesel propulsion engines before starting maneuvering? OA The main air starting valve should be opened to get ready for admission of starting air into the cylinders. OB. A heater is used to increase jacket cooling water temperature to eliminate the effects of cold starting the engine. OC Scavenge air valves should be opened to allow the scavenge air into the cylinders. OD. Turning gear should be operated to lubricate the cylinders if the engine is stopped for more than 30 minutes. OE. The engine should be tested for starting with the indicator cocks open to see if any abnormalities exist in-cylinder conditions.
Which of the following is not true about the preparations made for marine diesel propulsion engines before starting maneuvering? OA The main air starting valve should be opened to get ready for admission of starting air into the cylinders. OB. A heater is used to increase jacket cooling water temperature to eliminate the effects of cold starting the engine. OC Scavenge air valves should be opened to allow the scavenge air into the cylinders. OD. Turning gear should be operated to lubricate the cylinders if the engine is stopped for more than 30 minutes. OE. The engine should be tested for starting with the indicator cocks open to see if any abnormalities exist in-cylinder conditions.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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It is a multiple choice marine diesel engine question, please specify the correct option.
Transcribed Image Text:Which of the following is not true about the preparations made for marine diesel propulsion engines before starting
maneuvering?
A. The main air starting valve should be opened to get ready for admission of starting air into the cylinders.
OB. A heater is used to increase jacket cooling water temperature to eliminate the effects of cold starting the engine.
OC Scavenge air valves should be opened to allow the scavenge air into the cylinders.
OD. Turning gear should be operated to lubricate the cylinders if the engine is stopped for more than 30 minutes.
E. The engine should be tested for starting with the indicator cocks open to see if any abnormalities exist in-cylinder conditions.
Transcribed Image Text:Which of the following statement is true about Selective Catalytic Reduction (SCR) systems?
A. SCR units are capable of reducing the sulphur emissions in the exhaust gas effectively.
B. SCR reactors should be placed after the turbocharger to achieve the optimum operating temperature.
OC. SCR bypass valve is used to increase the exhaust gas temperature by reducing the mass of air through the cylinders for low load operations.
OD. Exhaust gas is catalyzed in the SCR reactor and then the urea solution is injected into the exhaust gas.
OE. The system requires seawater injection to exhaust gas for the open-loop SCR configuration.
Secimi fifirla
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