©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:10PM.
Machinist mate Exam Questions And
Answers 2025 Update.
What NSTM deals with propulsion and SSTG Turbines? - Answer✔NSTM 231
Whats type of rotary pump is frequently used as a lubricanting pump on pumpe and other aux
equipment? - Answer✔Simple gear pimp
What is the normal length of a tapered plug? - Answer✔3"
What is installed on a non-condensing turbone to protect turbine casing from excessive
pressure? - Answer✔Combination exhaust relief valve 2-3 psi above exhaust line pressure
On an SSTG, what protects turbine casing from excessive pressure? - Answer✔Back pressure
trip
When starting an SSTG, what is a minimum lube oil temp? - Answer✔60 degrees
What are the four sections of a PQS? - Answer✔Fundamentals, systems, watchstations, qual
card
What is the number for a PMS feedback report? - Answer✔4790/7B
When should oil coolers be put into operation on aux machinery? - Answer✔When temp of
lube oil leaving cooler is 100 degrees
DFT is designed to operate at what pressure and temp? - 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? - Answer✔Wearing rings
The federal water pollution control act was amended in what year? - Answer✔1970
What is the NSTM for compressed air systems? - Answer✔551
What is the max allowable pressure drop across a fuel oil duplex strainer when online? -
Answer✔3%
What is the NSTM for general reduction gear? - Answer✔241
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:10PM.
What is the NSTM for forced draft blowers? - Answer✔554
What is the required amount of sodium nitrate used for a sodium nitrate wet lay up? -
Answer✔10lbs per 1,000 gallons of feed water
What is the NSTM for insulation and lagging? - Answer✔635
What is QA chapter 11? - Answer✔QA forms and instructions
What is QA chapter 12? - Answer✔Submarine preservation
What is QA chapter 13? - Answer✔Wire removal and replacement
What is QA chapter 10? - Answer✔Quality assurance records
What is QA chapter 9? - Answer✔Audits, surveillance, evaluations and assesments
What is QA chapter 3? - Answer✔PQS and training
What is QA chapter 2? - Answer✔Quality maintenance process
What is QA chapter 4? - Answer✔Welder, brazer, and NDT qualifications
What is QA chapter 5? - Answer✔In process control
When is the current ships maintenance project verified and updated? - Answer✔Monthly
PMS schedules are categorized in what manner? - Answer✔Cycle, quarterly, weekly
Main feed pump is classified as what type of pump? - Answer✔Multi stage
High speed
Turbine driven
How long must the engine room/fire room operating log be kept for? - Answer✔2 years
Main feed pumps are fitted with what two types of governors? - Answer✔Speed limiting
Constant speed
the number of revolutions to major speed change is entered in what column? - Answer✔3
Entries for astern pitch are preceded by what level? - 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? - Answer✔1020 degrees
What is the first action taken, when you are experiencing difficulty in maintaining boiler water
level on an automated ship? - Answer✔Shift boiler feed water control to remote/manual
In the engineering bell book, what does I mean? - Answer✔Ahead standard speed
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:10PM.
In the engineering bell book, what does III mean? - Answer✔Ahead flank speed
In the engineering bell book, what does B 1/3 mean? - Answer✔Back 1/3 speed
In the engineering bell book, what does Z mean? - Answer✔Stop
In the engineering bell book, what does BF mean? - Answer✔Back full speed
In the engineering bell book, what does BEM mean? - Answer✔Back emergency speed
In the engineering bell book, what does II mean? - Answer✔Ahead full speed
When order received is recorded as RPM in what column? - Answer✔2
What QA for is used for testing and inspection? - Answer✔QA form 17
Boiler high water alarm is set to what parameter - Answer✔+7 inches
During a white smoke casualty to a boiler, what must never be adjusted? - Answer✔Fuel oil
header pressure
What temp is lube oil maintained on an operating main engine? - Answer✔120-130 degrees
A ruptured feed water control valve diaphragm will have what adverse effect on boiler water
level? - Answer✔Water level increase
Valve will fail open
Maximum steady state superheater outlet temp on a D type 1200 psig boiler? - Answer✔1000
degrees
During loss of vacuum casualty on a main condenser, what action must be taken when vacuum
decreases to 15"? - Answer✔Main engine must be stopped and casualty procedure IAW EOCC
Temporary distortion of SSTG rotor numerous start/stop episodes is known as what? -
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? - 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 - 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? - Answer✔24 hours
Main engine turbine bearings are measured for wear at what normal interval? -
Answer✔Annually
3
Machinist mate Exam Questions And
Answers 2025 Update.
What NSTM deals with propulsion and SSTG Turbines? - Answer✔NSTM 231
Whats type of rotary pump is frequently used as a lubricanting pump on pumpe and other aux
equipment? - Answer✔Simple gear pimp
What is the normal length of a tapered plug? - Answer✔3"
What is installed on a non-condensing turbone to protect turbine casing from excessive
pressure? - Answer✔Combination exhaust relief valve 2-3 psi above exhaust line pressure
On an SSTG, what protects turbine casing from excessive pressure? - Answer✔Back pressure
trip
When starting an SSTG, what is a minimum lube oil temp? - Answer✔60 degrees
What are the four sections of a PQS? - Answer✔Fundamentals, systems, watchstations, qual
card
What is the number for a PMS feedback report? - Answer✔4790/7B
When should oil coolers be put into operation on aux machinery? - Answer✔When temp of
lube oil leaving cooler is 100 degrees
DFT is designed to operate at what pressure and temp? - 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? - Answer✔Wearing rings
The federal water pollution control act was amended in what year? - Answer✔1970
What is the NSTM for compressed air systems? - Answer✔551
What is the max allowable pressure drop across a fuel oil duplex strainer when online? -
Answer✔3%
What is the NSTM for general reduction gear? - Answer✔241
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:10PM.
What is the NSTM for forced draft blowers? - Answer✔554
What is the required amount of sodium nitrate used for a sodium nitrate wet lay up? -
Answer✔10lbs per 1,000 gallons of feed water
What is the NSTM for insulation and lagging? - Answer✔635
What is QA chapter 11? - Answer✔QA forms and instructions
What is QA chapter 12? - Answer✔Submarine preservation
What is QA chapter 13? - Answer✔Wire removal and replacement
What is QA chapter 10? - Answer✔Quality assurance records
What is QA chapter 9? - Answer✔Audits, surveillance, evaluations and assesments
What is QA chapter 3? - Answer✔PQS and training
What is QA chapter 2? - Answer✔Quality maintenance process
What is QA chapter 4? - Answer✔Welder, brazer, and NDT qualifications
What is QA chapter 5? - Answer✔In process control
When is the current ships maintenance project verified and updated? - Answer✔Monthly
PMS schedules are categorized in what manner? - Answer✔Cycle, quarterly, weekly
Main feed pump is classified as what type of pump? - Answer✔Multi stage
High speed
Turbine driven
How long must the engine room/fire room operating log be kept for? - Answer✔2 years
Main feed pumps are fitted with what two types of governors? - Answer✔Speed limiting
Constant speed
the number of revolutions to major speed change is entered in what column? - Answer✔3
Entries for astern pitch are preceded by what level? - 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? - Answer✔1020 degrees
What is the first action taken, when you are experiencing difficulty in maintaining boiler water
level on an automated ship? - Answer✔Shift boiler feed water control to remote/manual
In the engineering bell book, what does I mean? - Answer✔Ahead standard speed
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 8:10PM.
In the engineering bell book, what does III mean? - Answer✔Ahead flank speed
In the engineering bell book, what does B 1/3 mean? - Answer✔Back 1/3 speed
In the engineering bell book, what does Z mean? - Answer✔Stop
In the engineering bell book, what does BF mean? - Answer✔Back full speed
In the engineering bell book, what does BEM mean? - Answer✔Back emergency speed
In the engineering bell book, what does II mean? - Answer✔Ahead full speed
When order received is recorded as RPM in what column? - Answer✔2
What QA for is used for testing and inspection? - Answer✔QA form 17
Boiler high water alarm is set to what parameter - Answer✔+7 inches
During a white smoke casualty to a boiler, what must never be adjusted? - Answer✔Fuel oil
header pressure
What temp is lube oil maintained on an operating main engine? - Answer✔120-130 degrees
A ruptured feed water control valve diaphragm will have what adverse effect on boiler water
level? - Answer✔Water level increase
Valve will fail open
Maximum steady state superheater outlet temp on a D type 1200 psig boiler? - Answer✔1000
degrees
During loss of vacuum casualty on a main condenser, what action must be taken when vacuum
decreases to 15"? - Answer✔Main engine must be stopped and casualty procedure IAW EOCC
Temporary distortion of SSTG rotor numerous start/stop episodes is known as what? -
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? - 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 - 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? - Answer✔24 hours
Main engine turbine bearings are measured for wear at what normal interval? -
Answer✔Annually
3
