MACHINIST MATE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ALL IN ONE DOCUMENT 500 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
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MACHINIST MATE EXAM, PRACTICE EXAM AND
STUDY GUIDE NEWEST 2024 ALL IN ONE DOCUMENT
500 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
What is the purpose of the gland dealing system? - ANSWER- It
prevent steam from leaking out of the main engine and from air
entering
How are flanges installed in a non ferrous system? - ANSWERBrazing
How often are fuel tanks emptied to reduce heavy sludge
deposits? - ANSWER- Every 12 months
What lubricated corrugated ribbon packing? - ANSWERGraphite
What must be done to lube oil coolers that are online more than
24 hours? - ANSWER- Drain seawater side
What material are oil deflectors made from? - ANSWERAluminum or bronze
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DFT will maintain dissolved oxygen context at or below what
level? - ANSWER- 15 ppm
What fuel oil test uses hydrazine? - ANSWER- API gravity
What device is installed on main engine to prevent leakage or
steam from engine? - ANSWER- Labyrinth packing
If rotary pumps are operated at higher than normal speed what
will occur? - ANSWER- Erosion and excessive wear
When shall safety valve gauge be placed on boiler prior to safety
settings? - ANSWER- When steam drum pressure is 100 to 200
psi below lower valve settings or 75% or working pressure,
whichever is higher
To obtain max effective sealing of labyrinth packing the tip
width of packing teeth should be maintained within what
parameter? - ANSWER- .010"
Idle line shaft bearing oil must be sampi 60 At what periodicity?
- ANSWER- Weekly
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Transverse diametrical pitch of reduction gear - ANSWERRatio of number of teeth to number of inches of pitch diameter
What type of reduction gear would you expect to find in aux
type shop? - ANSWER- Tandem articulated
Double reduction
With one or more inputs
Typical end play with cold engine is what? - ANSWER- .008-
.014"
What type of gauge is used to measure clearance between high
pressure and low pressure turbines? - ANSWER- Taper gauge
Chloride is an indication of what type of contamination? -
ANSWER- Sea water
How are steel flanges installed in systems? - ANSWERWelding
What type of corrosion is caused by shore water contamination?
- ANSWER- Caustic
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Max silica content of shore source feed water - ANSWER- .20
ppm
What is primary source of silica contamination? - ANSWERPoor quality shore feed water
Which dishwasher is fully automatic? - ANSWER- 3 tank
machine
Max moisture content of an oil sample drown from centrifugal
compressor? - ANSWER- 100ppm
Main condenser is what type of heat exchanger? - ANSWERCross flow
When stripping fuel oil tanks, system is aligned to draw off how
many gallons of fuel? - ANSWER- 150-300 gallons
Time limit on sodium nitrate wet lay up? - ANSWER- No time
limit
What device is installed on main engine thrust bearing to
indicate flow? - ANSWER- Sight flow indicator