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Medium speed engines are used widely as________ engines in most merchant cargo ships.

The ________engine is used for alternators and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 r/min.

The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the ________.

Since the burning or combustion takes place within the engine itself, the engine is known as ________.

______ are large, especially tall, heavy and operate on the two-stroke cycle.

Where will the thrust forces from the propeller be transferred to through a thrust bearing?

Since most medium-speed diesel engines are non-reversible, ________is usually used to cater for astern thrust.

A slow speed or medium speed diesel engine is a high pressure propulsion plant with ________.

______ speed engines operate in speed ranges from 300 to 1, 000 r/min.

The ________engine usually be directly coupled to the propeller as the maximum efficiency of each can be matched at a suitable rotational speed.

The influence of frictional and residual resistances depends on how much of the hull is ________ the waterline, while the influence of air resistance depends on how much of the ship is ________ the waterline.

The diesel engine is similar to the gasoline engine in that ________.

________allows the engines to be placed wherever is the most suitable, as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations.

In the merchant ship, a propeller, in order to operate efficiently, must rotate ________.

The maintenance period of the engine depends principally on ________.

Of all types of commercial internal combustion engines now built, which one usually gives the best performance, and hence it is quite commonly used in marine applications, especially in larger sizes?

Gas turbines differ from steam turbines in that ________ is used to turn a shaft.

What is the application of high-speed diesel engines at sea? ①They are used for emergency power generation to small applications ; ②They are used for electrical power generation on board ships driven by medium-speed propulsion engines ; ③They can be used on tugs, ferries and barges, etc. as main engine.

A supercharged diesel engine, when compared to a similar naturally aspirated diesel engine, will develop an increase in ________.

The compression ratio of a diesel engine refers to the ratio between the ______.