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

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

Movement of the pump control rack in a fuel injection system using individual plunger- type pumps _____.

What reason why there is Less vacuum in centrifugal pump?

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

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

A centrifugal pump will vary directly to the discharge head of what part?

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

In a steam propulsion plant, the primary source of auxiliary exhaust steam is from the ?

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

What is the reason why a centrifugal bilge pump requires priming?

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

What is the purpose of the booster unit in a fuel oil system?

In oily water separator which one of the following stages resposible for removing physical impurities present and promotes some fine separation?

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

Which of the following statements represents the function of insulating brick?

Clarifier is an oil separator use to remove

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 .

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

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

The separation chamber of the purifier is called ______.

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

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

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

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

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

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 _______.

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

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

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

What parts of Discharge Oil monitoring and control system unit calculates the oil discharge in litres/nautical miles and the total quantity when permissable limit has been reached?

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

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

The effect of too much heating in the fuel oil of main engine is _____.

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

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?

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

When seated, the disc of a safety valve has an area of 0.75 square inches (1.9 sq cm). When the valve lifts the area is increased by 10%. If the valve lifts at 300 psig (2170 kPa), at approximately what pressure will the valve reseat?

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

The recirculated oil in the fuel oil system is collected in the ______.

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

Purifier is using gravity disc during oil purification to establish correct ______.

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

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

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

Main propulsion engine lube oil sumps should be constructed _______.

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

What is the cause when a centrifugal pump may fail to deliver water when first started?

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

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

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

Unbalance accumulation of sludge in the bowl can result to

What is the result of the centrifuge if the bowl of a centrifugal purifier is improperly reassembled with O-ring seals that have become hard and flat ?

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

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?

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

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

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

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

Part of the centrifugal disc purifier use to hold discs in place and directs the flow of dirty liquid to the bottom then to the discs as the oil flows upward is called _____.

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

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

Demulsibility of a lube oil is defined as ______.

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

What is the largest source of tanker pollution?

Gland sealing steam is used during steam turbine operation to prevent the loss of

The emergency bilge suction valve is typically used?

In a main propulsion turbine installation, the condensate pump initially discharges to the

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

When firing a boiler in local manual control, an increase in boiler load must be accompanied by a/an

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

A good quality oil used in main propulsion engine lubrication systems should be ______?

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

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

Demulsibility of a lube oil is defined as ______.

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

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

Foot valves are primarily designed to ______.

Which of the following statements is correct regarding the start-up operation of a noncondensing turbine-driven feed pump?

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

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

Which of the boiler components listed receives feedwater and serves as an area for the accumulation of saturated steam?

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?

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

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

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

What functions to provide the right amount of fuel at the right moment and in a suitable condition for the combustion process?

What do you install to connect bilge and baallast line ?

Metallic packing rings are installed in turbine diaphragms to prevent.

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

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

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?

The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally

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

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

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

What happens when oil is heated?

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

Heating the oil makes the oil ______.