Lubricating oil used in the cylinder liner neutralizes acids produced by the burning of high sulfur fuels to prevent ______.

Prior to centrifuging,heavy residual fuel oils are heated to _____.

If one of the bilge system manifold valve does not properly seat, what effect could be expected during pumping operation?.

Main propulsion engine lube oil sumps should be constructed _______.

Upon disassembling the pump, it is found that the impeller is out of balance. There is no available spare. VWhat will you do if a centrifugal pump vibrates excessively during operation?

Air is normally bled from a diesel engine fuel system by ______.

A test of boiler water for chloride content indicates the amount of

Modern fuel oil temperature control devices are regulated to obtain a desired viscosity rather than a specific fuel oil temperature because.

Viscosity of fuel in the atomizer can be reduced by _______

Foot valves are primarily designed to ______.

Valves used in the machinery space piping systems, and constructed with threaded valve systems, must be ______.

In the fixed vane type emergency fire pump priming vacuum pump. After one week fire pump was not taking suction. The vacuum pump is engaging, but not developing vacuum in the suction side. What might be the cause?

What is this term "maceration" that refers to the process in sewage treatment?

By which of the following is the attached vacuum pump of a ballast pump is driven?

What part of the fuel oil systemis used to condition the fuel by removing solid and liquid impurities from the fuel oil?

If a centrifugal pump is not rotating after being overhauled, what may be the possible cause?

When a nozzle tester is being used to test a clock type fuel injection nozzle, a clogged nozzle orifice will be indicated by a _____.

An oily water separator consist of three stages, which one of the following unit segments separated the impurities and particles?

What parts of Oil Discharge monitoring and control system checked the flow rate of the oily water to be discharged is measured at the discharge pipe?

Clarifier is an oil separator use to remove

Salinity of distilled water produced from fresh water generator onboard depends on the ______.

A report when an incident takes place involving the discharge or probable discharge of oil (Annex 1 of MARPOL 73/78) ?

In a disk type centrifugal purifier operating as a separator, if diesel fuel was discharging from the waste water outlet, you should _______.

Separator functions to separate both solid and liquid impurities of oil is known as ______.

The Volume of the pump chambers are increase and decreased by the reciprocating motion of the _______.

Which of the following problem is the most probable cause if an operating bilge pump is developing good vacuum, but is unable to discharge any water?

What is the allowed quantity of oil in water that an oily water separator should be following?

When heating fuel oil used in main propulsion boilers aboard ship, the flash point may be exceeded only when

Longitudinal expansion of a boiler water drum is permitted by the.

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

What is the largest source of tanker pollution?

A sample of boiler water can be chemnically tested by initially adding a few drops of a specific color indicator, then slowly titrating a standard solution into the water sample until the

Air leakage into the pump casing by way of the packing gland of a condensate pump is prevented by _______.

Which of the devices listed is used to keep overheated condensate from flowing to the deaerating feed tank?

The way to dispose the bilge slop on an ocean going ship having an inoperative oily water separator is by

By which of the methods listed is the recirculating valve in the main condenser recirculating line designed to be controlled?

Water ballast placed in a tank that has been crude oil washed, but not water rinsed, shall be regarded as _______.

A multistage centrifugal pump can be BEST described as having

Purifier and clarifier are both working on the principle of _____.

What is the effect if a double suction centrifugal pump impeller has been installed in the reverse direction?

The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will _____.

In a diesel engine, excessive Iube oil consumption can be caused by _____.

In the hydraulically operated turbine gland seal regulator, illustrated, the device used as the sensing unit is called a/an

What parts of Oil Discharge monitoring and control system installed at the overboard so that it must close and stop the discharge when permissible limit has been reached?

Demulsibility of a lube oil is defined as ______.

What part of the fuel oil system is used to condition the fuel by removing solid and liquid impurities from the fuel oil?

Low pressure steam is used to keep air from leaking into turbine casing along the turbine shaft. For this purpose, which of the following steam systems is used?

It can prevent heat damage to fuel injection nozzles by avoiding ______.

Setting the relief valve opening pressure in a hydraulic system lower than the required operating pressure will result in ______.

What do you install to connect bilge and baallast line ?

What reason why there is Less vacuum in centrifugal pump?

In a multistage reaction turbine, the dummy piston and cylinder function to

The ability of an oil to separate cleanly from an oil and water mixture is referred to as its?

What is the reason why a positive displacement which a helical gear pumps are well suited for pumping oil?

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 ______.

To avoid oil from discharge into the sea when ballasting _______.

Which of the following types of main propulsion turbines is most likely to require a dummy piston or cylinder arrangement to counterbalance axial thrust?

What control valve listed below is NOT Considered to be hydraulic system directional control valve?

When the centrifugal disk type purifier is in separation process, the bowl position is _____.

An upper average ash content of 0.1% by weight is generally in heavy fuel oils. Which of the following conditions could be expected if the ash content increases above this amount?

If the fuel oil temperature in the fuel oil heater attains an excessive temperature, what will happenwhat will happen?

What device is used to monitor the fuel consumption of the ship s fuel oil system ?

Differential needle valves used in fuel injectors are directly closed by _____.

Which of the following actions should be taken FIRST if one-bilge wells of the multiple suction bilge system is unable to pump out ?

What will you install in order to prevent accidental flooding of the engine room bilges?

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

What particular device is installed in the fuel systems of the ship that is used to control the fuel oil temperature to provide correct viscosity for combustion?

Rows of tubes installed along the walls, floor, and roof of the furnace are called

The significant element contained in fuels that determines the specific heat is ______.

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?

In an operating lube oil system, the excess of water can be detected by ______.

Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed tank becomes flooded?

As found in a basic pneumatic automatic combustion control system, the function of a standardizing relay is to.

Engine room bilge water can be pumped out overboard safely by the use of which equipment listed below?

Which of the listed boiler components is used to equalize the distribution of water to the generating tubes and provide an area for the accumulation of loose scale and other solid matter present in the boiler water?

Demulsibility of a lube oil is defined as ______.

What is the characteristic of lubricating oil which causes additional centrifuging requirements for proper purification?

In the illustrated hydraulically operated turbine gland seal regulator, the exhaust dump valve is closed as a result of the piston being actuated by a/an .

The size of flexible hose used in hydraulic system is indicated _______.

What particular type of sewage treatment is basically a storage tank which collects solid matters for disposal in permitted areas or to a shore collection facility?

Condensate pumps have distinctly noticeable characteristics and are recognized by their.

Which of the following actions should be taken FIRST if one-bilge wells of the multiple suction bilge system is unable to pump out ?

Heating the oil makes the oil ______.

Fuel oil penetration into the cylinder of a diesel engine is _____?

Discharge of oily mixtures from machinery space bilges of tankers is prohibited except when, amongst other requirement, which of the following equipment is fitted?

Ballast pump suction filter was cleaned and the pump was lined up and it was found that there was some leakage in the filter. The pump started and the leakage started. During deballasting it was found that the pump could not take suction from one of the double bottoms tank. The cause could be _______.

Air removed from the main condenser is vented to the atmosphere through the.

A common type of air heater used in sectional header marine boilers is the .

Boiler water samples should be circulated through a cooling coil prior to analysis because

In a closed feed and condensate system, the drain from the second stage air ejector returns directly to the.

Which of the listed pumps discharges directly to the fuel oil settling tanks of a diesel engine main propulsion plant?

The lubricating oil consumption in a running diesel engine if excessive can be caused by _______.

Design characteristics of a velocity-compounded impulse turbine include the utilization of

Which of the following statements is correct to ensure safety to entering a pump room?

Maximum limit of fuel density to allow efficient oil cleaning of purifier is _______.

The purpose of the reaction turbine dummy piston is to

The net positive suction head of a boiler centrifugal feed pump should be calculated over

The main feed pump discharge pressure is controlled by the admission of steam to the turbine. The admission of steam is regulated by a