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Engine Rating — QMED
Showing 140 of 140 questions
According to the illustrated main and auxiliary diesel engine cooling water systems diagram, which of the following hea...
For what reason should engine room watchstanders make periodic checks on the loads carried by electric motors?
Where is the air charge for an air starting system stored?
What is the best protection against hand injuries from pinch points associated with being required to perform maintenan...
Aftercooling of a turbocharged diesel engine will result in _________.
As shown in the illustrated wound-rotor induction motor, how is the direction of rotation of the motor reversed? Illust...
When cleaning boiler fuel oil atomizer parts, what type of cleaning tool should NEVER be used?
What information can be obtained from a marine chemist's certificate on a tank barge?
Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constan...
To properly cut even numbered threads using the lathe thread dial indicator shown in the illustration, you should close...
Heat exchangers are most commonly found in a small auxiliary diesel engine __________.
The component in an inert gas system used for cleaning the gas of solid and sulfur combustion products, while simultane...
What would be the primary indication that a heavy fuel oil purifier supply pump suction strainer needed cleaning?
If the speed of a drill is too great, the drill will __________.
Which system should be used when required to raise the water level in an idle boiler?
Which factor determines the size of the ring dam for a fuel oil centrifugal purifier?
On a slow speed, crosshead type, diesel engine, in which application is the lubricating oil considered a consumable?
You are about to enter a compartment to investigate a suspected smoldering fire. If you're not wearing a self- contained...
Concerning the classification of steam turbines, a cross compound designed unit __________.
Which of the screwdriver tips listed will fit screws with a four-way or cross type slot?
Which of the following automatically actuates the overspeed tripping device installed on an auxiliary turbine?
It is necessary to cool the bulkheads and decks surrounding a compartment where there is a fire in order to __________.
Which of the following methods is used to lubricate main propulsion turbine reduction gears?
If the alarm provided in the fixed CO2 system sounds in the engine room, you should ________.
Overfilling a refrigerant container is extremely dangerous because of the high-pressures generated. The generation of p...
To measure the diameter of a piece of round stock, you should use a __________.
Condensate pumps have distinctly noticeable characteristics and can usually be recognized by their ______.
If a thermometer reads 80oC, what is the equivalent temperature in oF?
In a diesel engine closed freshwater cooling system employing a radiator, proper water temperature can be obtained by _...
The passive safety device installed on each Halon fire extinguishing cylinder, to prevent its overpressurization is cal...
What device on the bridge shows the rudder's position?
In preparing the surface of a metal for application of primers and finish coats, which of the listed hand tools is appr...
The device shown in the illustration is a/an __________. Illustration GS-0116
A good approach to personnel safety is to assume that all tanks and pumprooms are potentially dangerous. You should imm...
In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to _____...
Which of the following descriptions should be included when identifying the length for pipe nipples?
When an engine fitted with a hydraulic starting system starts up, the starter is protected from the higher speed of the...
Which pipe listed has the largest outside diameter?
Under EMERGENCY operating conditions with the main feed valve malfunctioning, what should be the proper valve positions...
What type of fuel oil as part of an oily-water mixture is most likely to have a density approaching that of water?
In a diesel engine jacket water cooler, with sea water cooling the fresh water, the __________.
The correct torque value for a micrometer torque wrench is reached when _________.
Fuel injection systems are designed to primarily meter fuel, atomize fuel, and _________.
The most common type of containment device for spilled oil on the water is the use of __________.
What type of clutch is pictured in the illustration? Illustration MO-0089
Which of the listed characteristics of fuel oil establishes the danger point as far as transferring, pumping, and firin...
In terms of the completeness of combustion, in performing a stack gas analysis on an operating boiler, what would be th...
What type of eye protection affords the best protection from dust and airborne abrasives?
One function of the air receiver in a compressed air system is to __________.
One of the steps required to increase the drilling speed of a drill press is to _________.
An excess pressure governor is a special type of control device. On what equipment would an excess pressure governor no...
What is meant by the phrase "solid flooding"?
The tube sheets installed in a fire-tube auxiliary boiler are normally connected by _________.
Basic emergency care for an electrical burn is to ________.
The thermal energy produced by an internal combustion engine is transformed into ________.
A crew member has suffered a burn on the arm. There is extensive damage to the skin with charring present. This is an e...
What is used to prevent contamination of a potable water system supplying a plumbing fixture such as a galley sink from...
What is the primary purpose of a reach rod as used as a valve remote operator?
What is the whistle signal for stop lowering boats?
What is the alarm signal for manning boat stations or boat drills onboard a merchant ship?
If the bearings of a piece of machinery are fed by a gravity feed lubricating oil system, what statement is true?
Which of the instruments listed is used to measure the gauge of a piece of sheet metal?
R-134a is often the replacement for which older type of refrigerant?
Small oil spills on deck can be prevented from contaminating any waters by __________.
How is accidental flooding of the engine room bilges through the bilge system prevented?
In the illustration shown, the sea painter is identified as item number _____. Illustration SF-0043
According to the temperature/enthalpy diagram for water at atmospheric pressure, if the substance is undergoing a heat ...
Which of the following statements best defines 'depth of cut' in lathe work?
Prior to initial light off of an idle boiler, what must first be done to prevent boiler flareback?
With regard to the relative flow patterns through the tubes and the shell of single pass shell-and-tube heat exchangers...
Some diesel engines are supercharged with a __________.
The illustrated valve is known as a __________. Illustration GS-0056
What is the normal destination of steam exiting a main feed pump drive turbine?
Which of the listed tools should be used to remove a tapered roller bearing from a shaft?
In terms of the completeness of combustion, in viewing the flame through the peephole, what would be the indication of ...
The control of exhaust temperature on a solid waste/sludge incinerator is critical. How is this temperature normally co...
How is lube oil pressure provided to a turbogenerator when starting the unit in an automated plant?
When a rescuer discovers an electrical burn victim in the vicinity of electrical equipment or wiring, his first step is...
Greases used for most marine applications would have what National Lubricating Grease Institute (NLGI) grade?
When launching an inflatable life raft, you should make sure that the operating cord is __________.
Which of the fuel injection systems listed uses a spring-loaded differential spray needle valve and an individual pump ...
Which of the listed conditions is a symptom of sun stroke?
A common method of preheating main turbine lube oil prior to rolling over the main unit would be to ______.
Why should battery rooms be well ventilated during the charging process?
In order for microbiological growths to thrive in a fuel tank it is necessary for __________.
Allowances may be made for the expansion and contraction in piping by the use of expansion joints or __________.
A "hygroscopic" lubricant used in refrigeration compressors would have what characteristic?
What type of wound is most susceptible to a tetanus (lockjaw) infection?
Which of the tanks, shown in the illustration, supplies fuel to the emergency generator? Illustration MO-0058
Which of the devices shown in the illustration is designed for both inside and outside measurements? Illustration GS-00...
While underway, vacuum in the main condenser is primarily caused by the ________.
The temper is likely to be drawn out from a chisel edge when you _________.
The proper location for journal bearing oil grooves is __________.
If you wish to initiate a station-to-station call over a sound-powered telephone circuit, what is the correct procedure...
On a large diesel engine installation, crankshaft axial alignment is maintained by the ________.
What determines the direction of rotation of an AC induction motor?
The component shown in the illustration, labeled "I", is the __________. Illustration SE-0013
At a minimum threshold, how many milliamps of current through the body produces a condition where most people would be ...
What will be the FIRST thing to occur if both the main and standby lube oil pumps failed to operate on a geared main pr...
On vessels exceeding 1600 GRT, who is responsible for the practical upkeep of machinery and the manning of the engine r...
When the compressed air reservoir is placed in line with an air compressor and is used as an aftercooler, what must be ...
A fire in a pile of canvas would be classified as a _________.
Which of the precautions listed should be taken before opening any part of a refrigeration system for the purpose of ac...
A hand portable CO2 fire extinguisher is effective on burning oil only __________.
If an attempted light off of an idle boiler fails, what should be done?
When performing routine AC motor maintenance what should be included?
Which of the following types of bearings are used as line shaft bearings?
Under what circumstances could equipment be operated when tagged with DANGER tags?
The term "oil foaming" in refrigeration practice, is used to describe what event?
The most common cooling agent used for fighting fires on tank vessels is _________.
In the event of a failure of the pneumatic control system, a multi-element feedwater regulator is designed to operate a...
The purpose of try-cocks used on an auxiliary boiler is to __________.
When performing a bottom blow on a boiler, what valve is spun open quickly?
What type of valve is shown in the illustration? Illustration GS-0047
All portable electric tools should have a ground connection to prevent __________.
What is the function of the aftercoolers installed in the diesel engine air intake system?
At a minimum threshold, how many milliamps of current through the body produces a painful sensation that most people wo...
How is the emergency bilge suction valve typically used?
The line labeled "G", as shown in the illustration, would be identified as the _____. Illustration GS-0175
Why are two fuel oil heaters "E" provided in the fuel oil system shown in the illustration? Illustration SG-0009
What statement below summarizes an engine lubricating oil's viscosity given as 20W-50?
The exhaust system for a turbocharged diesel engine functions to ________.
The best tool to use when attempting to widen the opening of a flanged joint, in preparation for renewing the gasket, i...
Where would a coarse screen wire mesh strainer normally be found on a diesel engine lubrication system?
A fire involving trash and paper waste would be classified as a ______.
According to the illustrated steam tables, what would be the superheater outlet temperature if saturated steam at 400 p...
To remove a hand-held right-handed straight cut reamer after it has gone all the way through a hole, you should _______...
Which of the condensers listed is cooled by sea water?
To detect the presence of explosive gases in any space, tank, or compartment, you should use a _____.
Which of the following statements correctly describes the construction of the close coupled sanitary pump shown in the ...
Why do roller bearings have higher loading capacities than ball bearings?
What is the reason that P-type or S-type traps are fitted on the sinks in a head?
Which of the following maintenance procedures would require a tag-out/lock-out to be performed?
Which statement is true concerning two-stage air ejector assemblies?
What is a useful instrument for checking 3-phase AC motor performance by measuring possible unbalanced currents?
A naturally aspirated diesel engine at full throttle will have an intake manifold pressure __________.
Which of the devices listed would be safe to use in a compartment with insufficient oxygen?
As shown in the illustration, what component would normally be installed at location "I"? Illustration MO-0231
The hand brake of a lifeboat winch is _________.