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MACHINIST MATE ACTUAL EXAM TEST BANK 500+
QUESTIONS AND WELL ELABORATED ANSWERS TOP
RATED VERSION FOR ALREADY A GRADED
HIGHLY RECOMMENDED BY EXPERTS | NEW AND
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MACHINIST MATE ACTUAL EXAM TEST BANK 500+
QUESTIONS AND WELL ELABORATED ANSWERS TOP
RATED VERSION FOR ALREADY A GRADE...
MACHINIST MATE ACTUAL EXAM TEST BANK 500+
QUESTIONS AND WELL ELABORATED ANSWERS TOP
RATED VERSION FOR 2024-2025 ALREADY A GRADED
HIGHLY RECOMMENDED BY EXPERTS | NEW AND
REVISED
What NSTM deals with propulsion and SSTG Turbines? - CORRECT ANSWER-NSTM 231
Whats type of rotary pump is frequently used as a lubricanting pump on pumpe and other aux
equipment? - CORRECT ANSWER-Simple gear pimp
What is the normal length of a tapered plug? - CORRECT ANSWER-3"
What is installed on a non-condensing turbone to protect turbine casing from excessive pressure? -
CORRECT ANSWER-Combination exhaust relief valve 2-3 psi above exhaust line pressure
On an SSTG, what protects turbine casing from excessive pressure? - CORRECT ANSWER-Back pressure
trip
When starting an SSTG, what is a minimum lube oil temp? - CORRECT ANSWER-60 degrees
What are the four sections of a PQS? - CORRECT ANSWER-Fundamentals, systems, watchstations, qual
card
What is the number for a PMS feedback report? - CORRECT ANSWER-4790/7B
When should oil coolers be put into operation on aux machinery? - CORRECT ANSWER-When temp of
lube oil leaving cooler is 100 degrees
DFT is designed to operate at what pressure and temp? - CORRECT ANSWER-15 psi and 240-250 degrees
,What is installed on a centrifugal pump to eliminate renewing of an entire propellor and pump casing
due to rapid wear? - CORRECT ANSWER-Wearing rings
The federal water pollution control act was amended in what year? - CORRECT ANSWER-1970
What is the NSTM for compressed air systems? - CORRECT ANSWER-551
What is the max allowable pressure drop across a fuel oil duplex strainer when online? - CORRECT
ANSWER-3%
What is the NSTM for general reduction gear? - CORRECT ANSWER-241
What is the NSTM for forced draft blowers? - CORRECT ANSWER-554
What is the required amount of sodium nitrate used for a sodium nitrate wet lay up? - CORRECT
ANSWER-10lbs per 1,000 gallons of feed water
When is the current ships maintenance project verified and updated? - CORRECT ANSWER-Monthly
PMS schedules are categorized in what manner? - CORRECT ANSWER-Cycle, quarterly, weekly
Main feed pump is classified as what type of pump? - CORRECT ANSWER-Multi stage
High speed
Turbine driven
How long must the engine room/fire room operating log be kept for? - CORRECT ANSWER-2 years
Main feed pumps are fitted with what two types of governors? - CORRECT ANSWER-Speed limiting
Constant speed
,the number of revolutions to major speed change is entered in what column? - CORRECT ANSWER-3
Entries for astern pitch are preceded by what level? - CORRECT ANSWER-B
What is the max allowable super heater outlet temp during transition periods of 15mins - 1 hour on a
1200 psig D type boiler? - CORRECT ANSWER-1020 degrees
What is the first action taken, when you are experiencing difficulty in maintaining boiler water level on
an automated ship? - CORRECT ANSWER-Shift boiler feed water control to remote/manual
In the engineering bell book, what does I mean? - CORRECT ANSWER-Ahead standard speed
In the engineering bell book, what does III mean? - CORRECT ANSWER-Ahead flank speed
In the engineering bell book, what does B 1/3 mean? - CORRECT ANSWER-Back 1/3 speed
In the engineering bell book, what does Z mean? - CORRECT ANSWER-Stop
In the engineering bell book, what does BF mean? - CORRECT ANSWER-Back full speed
In the engineering bell book, what does BEM mean? - CORRECT ANSWER-Back emergency speed
In the engineering bell book, what does II mean? - CORRECT ANSWER-Ahead full speed
When order received is recorded as RPM in what column? - CORRECT ANSWER-2
What QA for is used for testing and inspection? - CORRECT ANSWER-QA form 17
Boiler high water alarm is set to what parameter - CORRECT ANSWER-+7 inches
, During a white smoke casualty to a boiler, what must never be adjusted? - CORRECT ANSWER-Fuel oil
header pressure
What temp is lube oil maintained on an operating main engine? - CORRECT ANSWER-120-130 degrees
A ruptured feed water control valve diaphragm will have what adverse effect on boiler water level? -
CORRECT ANSWER-Water level increase
Valve will fail open
Maximum steady state superheater outlet temp on a D type 1200 psig boiler? - CORRECT ANSWER-1000
degrees
During loss of vacuum casualty on a main condenser, what action must be taken when vacuum
decreases to 15"? - CORRECT ANSWER-Main engine must be stopped and casualty procedure IAW EOCC
Temporary distortion of SSTG rotor numerous start/stop episodes is known as what? - CORRECT
ANSWER-Bowed rotor
Whenever a propulsion turbine casing joint is opened for any reason, a final contact check is required by
taking a red and blue check of the made up joint, what is the required contact for non pumping groove
joints? - CORRECT ANSWER-75% contact over entire joint, 1/4" minimum continuous contact inside the
groove and across each pressure section
What is the function of staff packing on SSTG - CORRECT ANSWER-Prevent leakage of stem from ingress
of air into turbines
Prior to conducting thrust measurements on a main engine, turbine must be at ambient temp with
throttles shit for how long? - CORRECT ANSWER-24 hours
Main engine turbine bearings are measured for wear at what normal interval? - CORRECT ANSWER-
Annually
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