QMED01 - Junior Engineer

The cubic inch (or liter) displacement of a cylinder is determined by the diameter of the piston and the __________.

Moisture is removed from recovered refrigerant using a recycling machine by what means?

Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed ...

The multiplier prefix 'giga' (G) such as used in "gigabytes" represents what multiplication factor?

What is the function of the intake system for a diesel engine?

The term "oil foaming" in refrigeration practice, is used to describe what event?

What statement is true concerning the illustrated steam turbine bearing lubricating oil flow and temperature indicating...

The individual 6-volt lead-acid batteries, when connected as shown in the illustration, as a battery bank would produce...

Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is a...

When an aluminum plate is bolted to a steel plate, what is required at the bolted joint to minimize bimetallic corrosio...

The cooling water flow from an air ejector intercondenser and aftercondenser is discharged directly into the _______.

In what application is an emergency shutdown most likely to be located outside the machinery space when the pump itself...

If a steam propulsion plant is provided with two main propulsion boilers, two fuel oil service heaters, two fuel oil se...

When treating a person for third degree burns, you should __________.

In a diesel engine closed freshwater cooling system employing a radiator, proper water temperature can be obtained by _...

Which of the following statements is true concerning the gauge labeled "A" of the illustrated gauge manifold set? Illus...

Guardian valves are installed on main propulsion turbines to ______.

What is the drive arrangement of refrigeration compressor shown in figure "B" of the illustration? Illustration RA-0041

The purpose of a "peep" hole in the boiler casing is to _________.

The discharge capacity of the axial piston hydraulic pump, shown in the illustration, is _______. Illustration GS-0058

Fuel injection systems are designed to primarily meter fuel, atomize fuel, and ________.

Which practices should be followed at all times when using an electric grinding machine?

What type of clutch is pictured in the illustration? Illustration MO-0089

Mechanical shaft seals used on water service pumps require lubrication of the seal faces to minimize deposits of foreig...

What does gland sealing steam prevent the loss of during steam turbine operation?

In actual applications, electrical connections associated with "R1, R2 and R3" of the transmitter to "R1, R2, and R3" o...

Which of the following could be the cause of leaking valves in an air compressor?

What is the current flow through R1 of the circuit in figure "B" of the illustration with the switch closed if the resi...

As shown in the illustrated D type single furnace boiler, what does item "F" represent? Illustration SG-0008

A dial indicator is used to measure __________.

Which of the following statements correctly describes the construction of the close coupled sanitary pump shown in the ...

What is a useful instrument for checking 3-phase AC motor performance by measuring possible unbalanced currents?

A dirty diesel engine oil filter element can best be detected by _________.

After extinguishing a paint locker fire using the fixed CO2 system, the next immediate action is for the space to be __...

What is the heat source for the deaerating feed tank introduced at "E" in the illustration? Illustration SG-0002

The state of charge of a stored pressure type dry chemical fire extinguisher can be readily determined by __________.

What is used to prevent contamination of a potable water system supplying a plumbing fixture such as a galley sink from...

A definite advantage in the use of water as a fire extinguishing agent is its ability to __________.

Which of the following procedures represents the proper care of unused burners during low load conditions?

What is the alarm signal for manning boat stations or boat drills onboard a merchant ship?

Which of the following statements is correct concerning heat transfer?

Which lathe tool shown in the illustration would best be used on a workpiece to perform a right-hand facing operation? ...

Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?

Refrigeration systems using forced air circulation evaporators have a tendency to cause rapid dehydration of produce in...

If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, ...

If you see an individual fall overboard, you should __________.

How is accidental flooding of the engine room bilges through the bilge system prevented?

Which of the following direct reading pressure gauges is capable of measuring and displaying both positive and negative...

Which of the tanks shown in the illustration supplies fuel to the emergency generator? Illustration MO-0058

A thermal expansion valve installed in a refrigeration system is controlled by the action of what device?

On a slow speed, crosshead type, diesel engine, in which application is the lubricating oil considered a consumable?

When troubleshooting AC motors, what can a portable growler be used to locate?

Greases used for most marine applications would have what National Lubricating Grease Institute (NLGI) grade?

The property of a fuel oil which is a measurement of its available energy, is known as its _________.

The purpose of the main reduction gears is to __________.

In a two-stage centrifugal air conditioning system such as the one illustrated, the liquid refrigerant passes from the ...

Compared to a naturally aspirated diesel engine, a supercharged diesel engine has _________.

What does the component labeled "B" shown in the illustration represent? Illustration EL-0093

Under normal conditions, the rate of heat transfer in a feedwater heater is most greatly affected by the __________.

With regard to the number of passes through the tubes of shell-and-tube heat exchangers, what statement is true?

Where would a coarse screen wire mesh strainer normally be found on a diesel engine lubrication system?

In the system shown in the illustration, the engine room station is unable to signal any other station, nor is any othe...

Connecting rods in a diesel engine are used to connect the ________.

What happens to the current in a series circuit when the voltage remains constant and the resistance increases?

An excess pressure governor is a special type of control device. On what equipment would an excess pressure governor no...

Which of the following methods will reduce the possibility of producing an electrical spark?

Cooling water to the vent condenser in a DC heater is supplied by the _______.

Winch gears must be maintained in proper alignment to prevent __________.

Steam supplied to the main propulsion turbines is _______.

Why can CFC or HCFC refrigerants leaking into a confined space or in limited surroundings cause suffocation?

Which statement is true concerning two-stage air ejector assemblies?

When administering first aid you should avoid __________.

Aftercooling of a turbocharged diesel engine will result in _________.

How can the loss of residual magnetism in an alternator or generator be corrected?

When an air started, four-stroke cycle diesel engine is being cranked over, the starting air is admitted to each cylind...

During the initial cooling down of a box temperature in a refrigeration system, which of the devices listed is used to ...

Of the many impurities commonly found in marine lubricating oil, which of the following CANNOT be removed by a centrifu...

In performing routine maintenance of a ship's service alternator, what should be included?

What is the primary reason that idle burners on a boiler be regularly checked to ensure that they do not drip?

What type of eye protection affords the best protection from dust and airborne abrasives?

The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust __________.

Traditionally, which of the listed refrigerants has been more suitable than the others for use in a centrifugal refrige...

Which system should be used when required to raise the water level in an idle boiler?

In a compression type automatic grease cup, the lubricant is forced into the bearing by __________.

When renewing spiral packing in a centrifugal pump stuffing box, the packing gland nuts should be _______.

If for any reason it is necessary to abandon ship while far at sea, it is important for the crew members to _________.

To properly clean a burner tip, you should use __________.

What is the voltage across "R1" of figure "B" of the illustrated circuit with the switch closed if the applied voltage ...

In a diesel engine, a leaking exhaust valve can cause _________.

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

When cleaning boiler fuel oil atomizer parts, what type of cleaning tool should NEVER be used?

Under what circumstance would a hand-held portable phase sequence indicator be used should the main switchboard mounted...

A two-stroke cycle diesel engine requires less starting air than a four-stroke cycle diesel engine, of equal displaceme...

Which of the illustrated motors has a totally enclosed, fan-cooled (TEFC) motor enclosure? Illustration EL- 0001

One function of the air receiver in a compressed air system is to __________.

When changing fuses, what safety precaution should be taken after ensuring that the circuit is dead?

The component shown in the illustration, labeled "IV", is the ________. Illustration SE-0013

Under what conditions is a CAUTION tag installed at equipment control stations in preparation for performing maintenanc...

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what would be the appropr...

If a fire broke out in an automation console, you would first secure the power and then proceed to use which of the lis...

In terms of the diluting effect of excessive excess air, when viewing the flame through a peephole, what would be the i...

If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may n...

Condensate return lines from tank heating coils are led to the ________.

An oxygen indicator will detect _________.

The process of supplying a diesel engine cylinder with air at a pressure greater than atmospheric is called _________.

What statement below summarizes an engine lubricating oil's viscosity given as 20W-50?

After the steam leaves the low-pressure turbine, it enters the _________.

Which of the following procedures reduces the possibility of an interior ventilation duct fire from rapidly spreading?

Which of the below engines might power a large merchant vessel with a direct drive controllable pitch propeller?

Which of the following shoring materials is a short flat block that is placed under the end of a shore for the purpose ...

When an engine fitted with a hydraulic starting system starts up, the starter is protected from the higher speed of the...

On a ship with a continuously manned engine room, with a three-person watch rotation, what is the watch and rest period...

According to the temperature/enthalpy diagram for water at atmospheric pressure, if the substance is undergoing a heat ...

As shown in the illustration, which of the following statements is correct concerning the circuits in a sound- powered t...

Which of the terms listed below represents the operational speed at which excessive engine vibration is created?

The purpose of try-cocks used on an auxiliary boiler is to __________.

The device shown in the illustration is a/an __________. Illustration GS-0116

What is an engine room bilge oily-water separator designed to do?

The power consumed during the scavenging process of a diesel engine is known as the _______.

In a refrigeration system, from what location would air and non-condensable gases be removed?

In order for microbiological growths to thrive in a fuel tank it is necessary for __________.

The most common cooling agent used for fighting fires on tank vessels is _________.

To prevent overheating and scoring of the shaft after repacking the stuffing box, which of the following procedures sho...

What could be the cause of water hammer in a steam heating system?

Which of the following statements about boilers is correct?

Which of the following statements describes the difference between the primary windings and the secondary windings of a...

When a slow-speed diesel engine is used to directly drive a fixed-pitch propeller, upon execution of a stop order and c...

An across-the-line starter is typically used for which of the following applications?

According to the illustrated main and auxiliary diesel engine cooling water systems diagram, which of the following hea...

The component labeled "A", as shown in the illustration, would be identified as the _____. Illustration GS- 0175

The process of boiling sea water in order to separate it into freshwater vapor and brine is usually defined as ________.

The amount of voltage induced in the stator windings of a modern AC generator is primarily dependent upon which of the ...

When a reciprocating pump is operating at maximum speed, the cushioning valves should be _________.

At a minimum threshold, how many milliamps of current through the body produces a painful sensation that most people wo...

Prior to initial light off of an idle boiler, what must first be done to prevent boiler flareback?

The seat of a butterfly valve will most likely be constructed of _______.

Fusible plugs are installed in fire-tube boilers to ________.

Using a sea anchor when in a life raft will _______.

What is the purpose of the main steam stop bypass valve?

In order for the automatic lifeboat drain to operate properly __________.