Engineering: Lubrication & Hydraulic Systems

The ability of lubricating oil to resist viscosity changes during temperature changes is indicated by the ________.

If the capacity of a centrifugal pump decreases gradually over a long period of time, you should replace the ________.

When securing a distillate pump on a low pressure fresh water evaporator, which of the listed steps should be carried out first?

A hydraulic system gear pump being fed from a reservoir frequently indicates signs of excessive pitting after two months of service. Which of the following would most likely contribute to this condition?

The minimum delivery pressure required for diesel engine fuel oil injection depends primarily on the ________.

Fuel oil penetration into the cylinder of a diesel engine is ________.

Which of the following precautions should be observed concerning the introduction of a fire resistant fluid into a hydraulic system?

A good quality oil used in main propulsion engine lubrication systems should be ________.

Fuel supplied by each unit injector on a two-stroke/cycle single acting diesel engine is directed into each cylinder at a very high pressure through the ________.

Very small irregularities on the seat and disk of a globe valve may be manually repaired with the valve in place by the process known as ________.

When assembling a run of liquid service piping, which of the following factors should be considered? I. How the type of fittings used will affect the flow II. What type of gasket material should be used III. What radius should be used for each bend in the

The injection pressure of a hydraulic fuel injection nozzle can be increased by ________.

Zinc anodes are installed in a marine raw-water cooling system to ________.

To correctly identifies the position of the journal when the shaft is ________.

Main propulsion engine lube oil sumps should be constructed ________.

The amount of fuel injected into a diesel engine cylinder by a unit injector, is controlled by ________.

Gate valves should not be used for throttling as ________.

If the chemical analysis of a lube oil sample taken from the main propulsion machinery indicates an increased neutralization number the ________.

Assuming oil and water flow rates remain the same, what would be the effect of scale formation occurring on the inside of the cooling water tubes of a lube oil heat exchanger?

The combustible element in fuel that could cause major air pollution is ________.

The viscosity of fuel oil is indicated by its ________.

The final heating of the feedwater in a flash type distilling plant is carried out by ________.

Which of the listed conditions can lead to cavitation in a centrifugal pump?

If you attempt to tighten a leaking hydraulic fitting with pressure on the system, you will ________.

While the oily-water separator is operating in the processing mode, if a low vacuum is observed, what is the probable cause?

The harmful effect of sulfur present in the boiler fuel oil is that it ________.

What should you do next after adding grease to a ball bearing with a hand held grease gun?

What happens when you heat the oil?

What instrument or process determines the BTU value of boiler fuel oil?

Greases are generally produced by ________.

If one of the bilge system manifold valves does not properly seat, the ________.

When securing a centrifugal type distillate pump, which of the listed steps should be carried out first?

Which of the following statements represents the proper relative direction of flow through a globe valve?

In a two stage flash evaporator, heated feedwater is vaporized in the ________.

In a centrifugal pumps operating with a high suction lift, foot valves are primarily designed to ________.

Which of the following centrifugal pump components converts the liquid velocity to pressure?

An oil fog lubrication system is recommended for ________.

The first step when beginning to set the slide valves on a duplex reciprocating pump is to ________.

If you are operating a centrifugal water service pump with worn wear rings, the ________.