In a four-stroke marine diesel engine, what are the four strokes in correct order?
Uscg Qmed Marine Diesel Engines
Question · Easy
Your heart has these. So do pipes.
Short
What ignites the fuel in a diesel engine cylinder?
What is the primary purpose of a fuel injection nozzle in a marine diesel engine?
Black exhaust smoke from a marine diesel engine most often indicates which condition?
Question · Medium
Blue exhaust smoke from a diesel engine most likely indicates:
Never vent refrigerant
What is the function of a turbocharger on a marine diesel engine?
An air intercooler (charge air cooler) located between the turbocharger and the engine cylinders is used to:
The compression ratio of a diesel engine is best defined as the ratio of:
If a four-stroke diesel engine has a bore of 6 inches and a stroke of 8 inches, what is the displacement per cylinder, rounded to the nearest cubic inch?
Question · Hard
Lockout/tagout, called like a cup final
What is the primary purpose of a governor on a diesel engine?
What is the purpose of scavenging air in a two-stroke diesel engine?
Diesel engine fuel injection timing that is too far advanced typically results in:
Which engine cooling configuration is most common on modern marine diesel propulsion engines?
What is the most likely cause of high jacket water temperature on a marine diesel engine?
Why should a hot diesel engine NOT be shut down immediately after running at full load?
What is the function of a fuel oil day tank on a marine vessel?
Water mixed with diesel fuel is most often removed by:
Air must be bled (purged) from a diesel fuel system after a filter change because:
The 'firing order' on a multi-cylinder diesel engine is chosen primarily to:
On a marine diesel engine, a 'cracked' or leaking exhaust valve typically causes:
On a four-stroke diesel engine, the camshaft rotates at what speed relative to the crankshaft?
What is the function of an exhaust gas waste-gate on a turbocharged diesel engine?
In a watertube boiler, where does the water flow and where do the combustion gases flow?
Uscg Qmed Boilers Steam
In a firetube boiler, the arrangement is:
What is the primary purpose of a boiler safety valve?
What is the primary purpose of boiler 'blowdown'?
Which of the following is the most serious immediate hazard if a steaming boiler's water level drops below the bottom of the gauge glass?
What is the correct first action if the water level disappears below the bottom of the gauge glass on a steaming boiler?
Which device on a boiler provides a direct visual indication of the boiler water level?
A gauge glass is normally 'blown down' each watch primarily to:
What is the primary purpose of boiler feedwater treatment?
Scale buildup on the waterside of boiler tubes is harmful primarily because it:
Dissolved oxygen is removed from boiler feedwater primarily because it causes:
What is the primary purpose of an economizer on a marine boiler?
What is the function of a superheater in a steam plant?
Soot blowers on a marine boiler are used to:
When lighting off a cold boiler, why must the firing rate be increased gradually?
A reciprocating air compressor that overheats abnormally is most often suffering from:
Uscg Qmed Auxiliary Machinery
What is the purpose of an unloader on a starting-air compressor?
Condensate that accumulates in an air receiver should be drained because:
What is the function of a centrifugal oil purifier (separator) in the engine room?
A purifier operated as a 'clarifier' is set up to:
An evaporator (freshwater generator) on a ship produces fresh water by:
What does a salinometer measure on a freshwater generator's distillate line?
The main condenser in a steam plant exists primarily to:
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