Download USCG Equipment Q&A: Mechanical and Electrical Systems Study Guide and more Exams Mechanical Engineering in PDF only on Docsity!
What allows a compressor to start at a reduced load? - ✔✔unloader Type of hydraulic pump widely used in USCG - ✔✔vane pump What is an ammeter used for - ✔✔measuring either direct or alternating electric current, in amperes. what is used to measure resistance and continuity - ✔✔an ohmmeter Two 12v batteries in series, what is the output - ✔✔creates 24v, amps stays the same what is used between the MDE and R/G in case of misalignment from mission operation? - ✔✔FLEXIBLE COUPLING What is the specific gravity of water - ✔✔ 1 Over 600 air PSI is stored in what kind of container? - ✔✔a flask Under 600 air PSI is stored in what kind of container - ✔✔A receiver Under 600 air PSI is stored in what kind of container - ✔✔A receiver What should be used along with water when cleaning plate type heat exchangers? - ✔✔steel wool when installing new hydraulic equipment, it is tested a 150% for how long? - ✔✔ 30 minutes
MK1 SWE 202 5 QUESTIONS | Actual Exam
Questions | 100% Correct Answers | Verified
2025 Version
newly welded deck fittings are tested to a capacity of what percentage? - ✔✔???? Most common contaminant in hydraulic fluid? - ✔✔water what is used to measure electrical insulation? - ✔✔megohmeter PPM of sulfide allowed in sulfide diesel? - ✔✔ 15 smallest micron visible to the human eye? - ✔✔ 40 microns whats the maximum hole you're allowed to cut in the hull of the ship? - ✔✔???? P- 6 SUCTION HOSE LENGTH - ✔✔ 15 ft What safety switch has been removed from the P-6? - ✔✔oil level safety switch maximum effective range for AFFF - ✔✔15ft Most common used dry powder exstinguisher? - ✔✔PKP (potassium bicarbonate) Vibration damper that is most effective for constant speed changes? - ✔✔Harmonic or gear I don't ****ing know what rings are not allowed to be worn? - ✔✔???? NSTM for propeller coatings? - ✔✔ 245
What is the closure member called in a globe valve? - ✔✔Disc Coast guard uses what kind of maintenance system? - ✔✔Bi-level Coast guard MPC numbers use what system? - ✔✔S1000D Another name for a rotary valve that has a disc the moves 90 degrees? - ✔✔Butterfly what kind of brakes are used in turbines and shafts? - ✔✔DISC/ CALIPER BRAKES What does CDGAT stand for? - ✔✔Combined diesel or gas turbine types of flow through a heat exchanger? - ✔✔Turbulent, cross flow, parallel a NIIN should have how many letters? - ✔✔ 9 NIIN stands for? - ✔✔National item identification number Biobor JF and what are the only allowed bio fuels? - ✔✔Navfleet 9 - 303 what percentage of the gauge should your normal readings fall into? - ✔✔ 33 - 66%? what is VI acronym mean in hydraulics? - ✔✔Viscosity index? viscosity indicator? or variable something? where is the TIT2 sensor located on the BF250? - ✔✔front of the engine, its red What directly affects the steering on a jet drive? - ✔✔engine rpm
What hoses are not tracked in the hose log? - ✔✔out board engine hoses Silicone grease should not be used on o-rings in what systems? - ✔✔petroleum systems A zeroed vaccum gauge will measure what? - ✔✔14.7 psiA P- 100 fuel? - ✔✔F- 76 or JP- 5 What is used for lower unit gear oil? - ✔✔SAE 30 VTEC is on which side of the engine? - ✔✔intake How tight should the steering linkages be on the 45RBM? - ✔✔do not torque Water trapped in fuel is called? - ✔✔entrained water 45RBM gear sump oil capacity? - ✔✔0.48 gallons 40 PSI on a 26 trailer is what kind of discrep - ✔✔restrictive NSTM chapter for air compressors? - ✔✔ 551 WHAT ARE TWO TYPES OF MAINTENANCE - ✔✔CORRECTIVE AND PREVENTATIVE after the first 50 hours of running, how many hours past until you change the desalination filter? - ✔✔????
You find something else wrong with the piece of equipment that has already been CASREP'd you should send an? - ✔✔UPDATE WHERE DO YOU FIND THE HIERACHY OF GUIDANCE FOR THE SPECIFICATION PLANS? - ✔✔NEM CH 41 WHICH SPECIFICATIONS MAY BE USED AS GUIDED RESEARCHING TO PROPOSE ENGINEERING CHANGES AND SOLUTIONS? - ✔✔GSO WHERE DO YOU FIND THE AUTHORIZED MATERIAL LIST FOR DECK COVERINGS? - ✔✔NEM CH 634 110 - WPB - 521 - 01, what does 5 21 represent - ✔✔SWBS NUMBER (SHIPS WORK BREAKDOWN STRUCTURE) ETHUSIASM FOR REALISITIC DRILLS MUST OUTWEIGH SOUND JUDGEMENT, OR SOUND EVALUTION OF THE - ✔✔STATE OF THE CREW CASUALITY CONTROL IS USED FOR WHAT TYPE OF CASUALITIES - ✔✔OPERATIONAL AND BATTLE HOW DO YOU HOOK UP AMMETER - ✔✔IN SERIES WHAT DO YOU CLEAN BATTERY TERMINALS WITH? - ✔✔SODIUM BICARBONATE/AMMONIA If a CAN buss has 120 ohm resistors at each end what is the total resistance on the good CAN buss? - ✔✔ 60 OHMS In a DIN what is represented by the letter F? - ✔✔fuse/breaker how would you test a 4 - 20mA sensor - ✔✔in mA, in series
When testing a P1000 pyrometer and you read zero ohms? - ✔✔the center is good/closed installed in all PIM1 and PIM2 cards? - ✔✔MPU how long will a wet cell battery go for off a charge before it needs to be recharged? - ✔✔ 4 - 6 months when using an ammeter to troubleshoot always use the scale - ✔✔highest while during a float charge, the charger monitors what? - ✔✔voltage in a wet cell battery what should the electrolyte level be? - ✔✔3/ in a gel cell battery what is the purpose of the separating plates? - ✔✔separates the pos and neg cells preventing a short circuit a WG of a wire is measured by? - ✔✔the bare wire in the opening of the gauge amperage of the wire is measured in reference to? - ✔✔ 10 and 100 ft lengths the standard for wire manufacturing is? - ✔✔American wire gauge (AWG) how often do zincs last? - ✔✔three months a thrust bearing supports what type of movement? - ✔✔axial With regards to flange shielding on a diesel fuel system, what is considered a hot surface? - ✔✔ 400 degrees F what is a hose shelflife - ✔✔ 10 years
who is responsible for engineering procedures? - ✔✔EO how many decibels for single and double hearing protection? - ✔✔ 84 (single) 104 (double) what happens in a parallel circuit? - ✔✔amperage increases while volts stays the same which hose is not a part of a hose log? - ✔✔outboard hoses should you ever adjust a thermal expansion valve? - ✔✔Never or as little as possible what is the disadvantage of a nonpositive displacement pump? - ✔✔suction lift what does "K" stand for on MTU? - ✔✔relay when should the final shaft alignment be done on surface ships? - ✔✔take with the ship waterborne This type of valve controls the quantity of refrigerant admitted to the cooling coil and reduces the pressure of the refrigerant - ✔✔TXV why are oil heaters provided on AC&R compressors? - ✔✔Reduces the dangers of foaming and also keeps refrigerant out of the oil before using temporary hoses on hydraulic equipment they must be tested to a pressure of atleast? - ✔✔110% POTW hoses should be labelled how many feet - ✔✔ 10 ft a thrust bearing supports what type of movement? - ✔✔axial and radial
which component can be pressure compensated on a non-pressure compensated system? - ✔✔flow control valve With regards to flange shielding on a diesel fuel system, what is considered a hot surface? - ✔✔ 400 degrees what does SSS for a SSS clutch stand for? - ✔✔synchro-self-shifting what are the 4 stages of a basic refrigeration system? - ✔✔compression condesation expansion evaporation what percentage of working pressure do you test a temporary hose to? - ✔✔150% on a honda 150/225 which valve does the VTECH control - ✔✔intake What state is the refrigerant in an AC&R System in which it is in liquid and gas form in the same space - ✔✔saturated when float charging a battery the charger monitors what? - ✔✔voltage what % of hydraulic failure is due to contamination? - ✔✔80% drawings under SWBS #101 refer to? - ✔✔structural drawings what are the three levels of maintenance used in the coast guard? - ✔✔organizational intermediate depot
Drawings under swbs #200 refers to what - ✔✔Propulsion plant DRAWINGS UNDER SWBS #300 REFER TO WHAT? - ✔✔ELECTRICAL DRAWINGS UNDER SWBS #400 REFER TO WHAT? - ✔✔COMMAND AND SURVEILLANCE DRAWINGS UNDER SWBS #500 REFER TO WHAT? - ✔✔PIPING DRAWINGS UNDER SWBS #600 REFER TO WHAT? - ✔✔OUTFITS AND FURNISHINGS HOW MUCH AIR PSI CAN BE STORED IN A RECIEVER? - ✔✔ 600 What rpm does the Honda drop to when there is a loss of oil pressure alarm - ✔✔ 1800 RPM WHAT DO YOU CALL THE WATER FROM THE RO? - ✔✔PERMEATES SFLC MAY AUTHORIZE A DELAY IN OVERHAUL FOR UP TO? - ✔✔20% OF OVERHAUL TWICE WATER TEMP RISE ACROSS AND ENGINE SHOULD NOT EXCEED WHAT? - ✔✔ 10 - 12 DEGREES WHAT IS A DYNAMIC TEST? - ✔✔125% working load limit WHAT IS A STATIC TEST? - ✔✔200% working load limit for 10 minutes PHYSICAL INVENTORIES MUST BE KEPT IN AN AUDIT STATE FOR? - ✔✔ 3 YEARS PLUS CURRENT FISCAL YEAR
HYDRAULIC FLUID PROPERTIES ARE TO? - ✔✔COOL, LUBE, SEAL, TRANSMIT POWER
WHAT FUELS ARE HONDAS ALLOWED TO USE? - ✔✔86% octane 10% ethynol maximum ppm of water in petroleum hydraulic fluid - ✔✔100? double bourdon tube gauges are mainly use to the measure differences across what? - ✔✔filters two stage filters remove contaminants and what else - ✔✔water? number of interactive queries pages in fedlog? - ✔✔???? bearings that are best for misalignment of shaft deflection? - ✔✔thrust? max air psi in recievers? - ✔✔ 600 honda bf250 oil psi alarm at 1800 rpm - ✔✔25, 23, 15, 10 psi???? compressed gas cylinders hydro statically tested every how many years - ✔✔5, 8, 10, or 12???? how long on the 87 RO do you run in dump after changing filters? - ✔✔10, 15, 30, or 60??? what rpm does bf150 drop to when you get low oil psi alarm - ✔✔2000, 1800, 1500 or idle??? ac generator turning electrical power into mechanical power? - ✔✔electromagnetic induction Boat Inspection Report - ✔✔CG- 3022
what is the time limit place on storage and use of fuel other then F-76/JP-5? - ✔✔ 6 months when should clear and bright be tested in fueling? - ✔✔Before fuel is taken onboard and every 15 minutes thereafter what does the clear and bright test do? - ✔✔identifies water and particulate contamination, and to a limited degree, microbial contamination what is the maximum allowed sediment and water content for fuel? - ✔✔0.05 volume-percent What is the minimum flashpoint for marine fuel required by SOLAS law? - ✔✔ 140 deg F what component in the fuel system removes entrained water? - ✔✔water separators (coalescers) what dyed diesel color is not acceptable for use on Coast Guard Vessels? - ✔✔BLACK what dyed diesel color is used domestically? - ✔✔RED single most effective procedure for maintaining fuel quality? - ✔✔stripping the tanks Disadvantage of centrifugal pumps? - ✔✔Lack of suction lift until the pump has been prime, and sensitivity to variation in head and speed what do you call water trapped in fuel? - ✔✔entrained water what are types on anti friction bearings? - ✔✔roller and ball bearings radial flow pumps produce a flow rate capacity at a head - ✔✔low, high
axial flow pumps produce a flow rate capacity at a head - ✔✔high, low what kind of pumps are most potable water pumps? - ✔✔centrifugal close-coupled type NSTM chapter for firefighting? - ✔✔ch 555 before starting any centrifugal pump was should you ensure? - ✔✔that the pump is fully primed what does an aftercooler do on an air compressor? - ✔✔removing the heat of compression from the air after the last stage of compression thrust bearings are designed to absorb what type of forces? - ✔✔axial what pressure vessel stores air at 600 psig and lower - ✔✔air reciever Low pressure air systems ranges from what psig - ✔✔ 150 and below medium air pressure systems range from what psig - ✔✔ 151 - 1000 psig what pressure vessel stores compressed air above 600 psig - ✔✔air flask high pressure air systems range from what psig - ✔✔ 1000 psig + What will happen if full load is apples to quickly to an engine with new rings or liners installed? - ✔✔Risk of galling pistons, scoring liners, or even piston seizure What is galling - ✔✔Breakdown or build up of metal surfaces due to excessive friction between two parts having relative motion.
