RVTI Level 1 Certification Prep Exams 2025-2026 Guide, Exams of Mechanical Engineering

Download RVTI Level 1 Certification Prep Exams 2025-2026 Guide and more Exams Mechanical Engineering in PDF only on Docsity!

RVTI Level 1 Certification Prep Exams 2025-2026 Guide

RVTI Level 1 Certification Prep Exams 2025-2026 Guide Propane, as extracted, - ANSWER-Is odorless and colorless The device used on a propane tank to reduce pressure is called a- ANSWER-Regulator The boiling point for propane is - ANSWER--44*F (42*C) A property of propane is that, when heated, it - ANSWER-Expands When an element or compound changes from the liquid phase to a vapor, it is called - ANSWER- Vaporization When working with propane systems, the most important factor to consider is - ANSWER-Safety Propane is flammable, can explode with pressure, and is able to - ANSWER-Freeze skin Tt is important to wear gloves when using propane because it can - ANSWER-Freeze the skin When working with propane, it is important to wear - ANSWER-Appropriate gloves To close a service valve on a propane tank, it is best to tighten the valve with - ANSWER-A hand Ina shop environment, always wear- ANSWER-Safety glasses When transporting or storing containers, always use- ANSWER-A POL plug or dust cap Which service valve is mandatory in the RV industry? - ANSWER-Type 1 OPD What is now required to be part of ASME tanks but was not required prior to 1983? - ANSWER- OPD The maximum allowable working pressure on an ASME tank can be found on the - ANSWER- Data plate The most common securing methods for cylinders include - ANSWER-Adiustable straps and T- bars Purging is nceessary for - ANSWERNew and contaminated containers For purging, you must increase pressure by 15 psi and is the total number of purgings required. - ANSWERS The tare weight of a cylinder is 19 pounds. The propane capacity is 20 pounds. To how many pounds should the cylinder be filled and to what level? - ANSWER-39 pounds; 80% level The relic! valve will finetion if the pressure of the compressed air plus the pressure of the propane meets or exceeds the relief valve setting of - ANSWER-375 psi Immediately after conducting the operating pressure test - ANSWER-Close up the gas cock Any regulator pressure over inches WC will require the regulator to be replaced. - ANSWER-14 During a timed pressure drop test, no pressure drop should be detect $a pressure increase due to thermal expansion __, and if there is a pressure drop .- ANSWER- Repeat the test...locate and repair leal, and retest What should be documented for a timed pressure drop test with a test apparatus? - ANSWER. Inches of water should show a working pressure of about ____inehes.- ANSWER-14 When adjusting a system regulator, the operating 11 inches, and the lockup pressure should never The operating test is used 1a determine the pressure the regulator is giving whicn al Icast __ of the appliance load is functioning. - ANSWER-30% Aregulator must have a rated capacity equal to or greater than the total Btu/Hr input of - ANSWER-AIl appliances The RV standard requires that the timed pressure drop test be conducted for at least - ANSWER-3 minutes What is the most important reason to document tests? - ANSWER-Prot against lawsuits What should be documented for a timed pressure drop test when doing th at the range? - ANSWERManometer measurement and duration hat does DWV mean? - ANSWER-Drain, waste, vent Why is ABS piping used in the RV industry? - ANSWERIt resists impact in cold temperature An RV water distribution system needs - ANSWER-A means of providing pressure Ifa customer complains of lukewarm water at one or more hot faucets - ANSWER-A bypass valve might be partially open or failed Sealants used when building city water test kits should - ANSWERBe for potable water What sealant is most appropriate to use when assembling a city water test kit?- ANSWER- Thread Which step is part of a freshwater system inspection? - ANSWER-Conduct a water system leak Lost. on, make sure il functions properly on - ANSWER-Pump and When inspecling a freshwater city water hookup How long do demand system and air pressure tests last? - ANSWER-10 minutes When winterizing the waste system, what is the purpose of pouring another cup of antifreeze down the drain at the kitchen, lavatory sink, and show/tub drains? - ANSWER-To check if the p- traps have antifreeze After flushing and cleaning holding tanks during winterization, drain each tank and - ANSWER. Close Lerminalion valves Sewage wastewater holding tanks can receive discharge from - ANSWER-Any number of RV fixtures Which test requires the entire drainage system, including holding tanks, to be filled until water system? - ANSWER-Fixture flood test appoars at lhe bottom of the lowest. fixture on cac What is checked last during a flow Losi? - ANSWER-Leaks Which statement is true? - ANSWER-Electrons in the outer orbits are attracted less power filly to the nucleus Which of these is a function of insulators? - ANS WEF-Confines electron flow What is true about the ends of permanent magnets? - ANSWER-They are more concentrated than the middles Ifa length of wire carrying a current is bent to form a loop, the lines of force around the conductor will leave at one side of the loop and enter - ANSWEF-On the opposite side What is the symbol for current flow? - ANSWERI When two points of unequal potential or voltage are connected - ANSWER-Current flows Joining RV batteries in series allows the technician to- ANSWER-Keep the same amperage and add voltage To properly measure current with a VOM, you must connect the VOM - ANSWET-In series with the source Convert 125 milliamps to amperes - ANSWER-.125 What is the correct setting on a VOM for measuring DC Amperage? - ANSWER-mA or DCA When using a voltmeter to test for voltage in a simple circuit, always connect the meter in wilh the load. - ANSWER-Parallel Convert 400 millivolts to volts. - ANSWER-.AQ What is the basic unit of resistance? - ANSWER-Ohm At constant voltage, double the resistance is equal ta the current. - ANSWER-1/2 In the final calculations of Ohm’s Law, current is always expressed in- ANSWER-Amperes When an accident occurs, it must be reported to - ANS WER-The supervisor A parallel RV batte the voltage the same , bank allows the technician to - ANSWER-Incre: = current and keep An unknown resistor is connected across a battery. The voltage across it is 12 volts and the current flowing is4 amperes. What is the resistance of the resistor? - ANSWER-3 ohms In reference to current, what is the minimum threshold for irreparable damage to body tissues? - ANSWEI-Over a few amps In DC currents, the direction of current flaw - ANSWEF-In constant Wire size is expressed in terms of - ANSWER-Gauge Steps for measuring AC current on an analog or digital meter include placing the meter in a safe position, sclecling ac current mode, and then immediately switching to the ___ ewren! range. - ANSWER-Highest When measuring current on an analog or digital meter, what relationship should the meter capacity have to the expected amperage? - ANSWERIt should be higher When testing for an electrical short during the hot skin test, place one voltmeter probe on an earth ground surface and the other on what type of surface? - ANSWER-Bare metal Tfthe skin of the unit is not hot, the voltmeter will read - ANSWER-O When conducting an AC voltage test, an acceptable reading will be at or near VAC or equal to the voltage output of the source. - ANSWER-120 When conducting an AC voltage test, place the test probes into slotted openings of a receptacle. - ANSWER-2 AGECTI has receptacles that are protected at this place if the receptacle is properly wired. - ANSWER-Downstream Inverters are rated in- ANSWER-Watts Identify an advantage of alternators. - ANSWEF-Delivers higher current at a lower rpm than generators RV battcrics contain acid. - ANSWER-Snlfuric What is Lruc of smoke alarms for RVs?- ANSWER They need Lo be listed for RV nse and installed Identify the necessary electrical safety tests. - ANSWER-120 vac, hot skin, ac voltage, and GFCI When pressing the button on a Lester during a GFCI lest, what must happen? - ANSWER-The circuit breaker must trip Why do RVs use converters? - ANSWER-Convert AC to DC What is the result of a thermocouple that is not performing very well? - ANSWER-Propane flow will be prevented A technician must verify which weight capacity of a truck to use a truck camper? - ANSWER. Suspension capacity What is a cooktop with an oven called? - ANSWER-Range Verify which of the following weights regarding the adequacy of the pickup?- ANSWERGVWR The data plate for a range is located - ANSWER-In the burner box When performing PDI on expandable rooms, slide-out operation can be hindered by - ANSWER. Location of furniture The temperature setting of 300" F is referenced when inspecting - ANSWER-Ovens When performing PDI on slide outs, verify alignments in open and closed positions - ANSWER- Front to rear, Lop Lo bottom Two main types of RV microwaves include standard and- ANSWER-Convection Primary and secondary are two major types of - ANSWER Sealant When performing PDI on microwaves, document the make, model, and- ANSWER-Serial number When checking seals that are already in an RV, a technician must - ANSWER-Observe that they are visible How long should tap water be microwaved when performing PDI? - ANSWER-1 minute The windshield wiper operates the windshield wipers at all designated speeds. - ANSWERControl Of all the manufacturers, what is the most common functions of all hydronic heating systems? - ANSWET Interior heat When inspecting the parking brake, make sure there is no __. ercep. - ANSWER-Forward The boiler tank in a hydronic heating systom is healed in all of the following ways EXCEPT - ANSWER-Through solar power cells schnician is testing a motorized RV. The first step enacted is ensuring that the seat moves up, down, forward, and back. Identify the next main steps for the technician to perform. - ANSWER Adjust scalback, resi scat heaters, inspect armrest When performing a propylene glycol level test, you should use which tool - ANSWER- Refractometer The engine must run for a few minutes for this to work properly. - ANSWEF-Heat and cool modes When inspecting the hydraulic fluid level in the reservoir, clean the top of the Reservoir before removing the cap to- ANSWER-Prevent foreign material from entering the hydraulic system When conducing PDI on RV furnaces, ensure that air flow is- ANSWER-Warmer than ambient temperature For chassis leveling systems, hydraulic fluid should always be checked when levelers and/or rooms are - ANSWER-Retracted Water heaters can be tested only after the water tanks have been - ANSWERFilled When interpreting the year of production, an RV Lire has a typical life of - ANSWERS to 7 years: When inspecting ovens, set the oven thermostat to- ANSWER300° F When verifying the age of a tire, “1206” in the last grouping indic: the tire was made in the - ANSWER-12th week of 2006 When performing PDI on a microwave, scl a in the appliance - ANSWER-Container of water When inspecting tires on a towable RV, inspect lug nuts for proper - ANSWER-Torque RV generators can be powered by - ANSWEF-Gasoline and propane When verifying the installation of pin box couplers on a fifth wheel hitch, the hitch should be the frame. - ANSWER-Square with A generator transforms ___ energy into energy. - ANSWERMechanical: electrical Inspect the whole underside of the towable coach looking for loose, hanging, or components. - ANSWER-Damaged Prior to putting a load online, allow a warm-up period of to minutes. - ANSWER. 2,3 Bolore using stabilizer jacks, be sure thal the landing gear on the _. _ wheel operates properly. - ANSWER-Fifth Current generators have non-adjustable carburetors that are - ANSWER-EPA-mandated When inspecting stabilizer jacks, ensure they fully extend and- ANSWER-Retract Always check the before starting any generator - ANSWER-Oi] level Where do the trailer brakes get their power when the brake-away switch is activated? - ANSWER-Coach batlory The run test with load on a gencrator is porformed with the generator - ANSWER-Connected to When performing an interior electrical inspection, verify the volt DC ports have power. - ANSWER12 A technician is weighing a vehicle with no cargo as built at the factory. The vehicle includes full fuel, engine oil, and coolants and no freshwater, propane, occupants, or dealer-installed es. Which type of weight is Ihe technician measuring? - ANSWEF-Unloaded Vehicle ht (OVW) Ord ac{ce: When in the motor home cockpit, test steering wheel adjustment and check that it is- ANSWER Straight when it is in the straight position GCWR - GVWR (railer) =- ANSWER-Maximum allowable weight for the tow vehicle Whon testing steering wheel adjusiment, cheek for when it is nol turned to cither side. - ANSWER -Straightness GCWR is most closely associated with - ANSWER-Total loaded weight When performing PDI on the entrance and compartment doors, the technician should have keys to fit every lock. This means that set(s) of keys should exist. - ANSWER2 CCC is equal to weight minus a couple factors. What is one of those factors? - ANSWERUVW Inspect all entrance doors and drip caps for - ANSWER-Intact butyl and/or caulking CCC was formerly called - ANSWERNet Carrying Capacity (NCC) When performing PDI on the entrance and compartment doors, test operation of all compartment as necessary. - ANSWEF-Lubricate doors and CCC stands for___ Carrying Capacity. - ANSWERCarga When checking entrance doorsteps, them if needed. - ANSWER-Paint The GVWR minus UVW, fill fresh water, full propane, and SCWR is equal to?- ANSWERCCC Ifa roof is not walk-on style and a technician must walk on it, - ANSWERUse ply wood as support Consult the vehicle manufacturer, tire dealer, or tire manufacturer when considering changing to a lire olher than those shown in the - ANSWER-Federal certification labol There are five types of roofing material uscd on RVs. They are aluminum, fiberglass, PVC, TPO, and - ANSWER-EPDM Canadian Compliance Labels are - ANSWEI_Different in content from RVIA weight labels Ensure that decals are on the unit.- ANSWEF-Standards certification Ifa vehicle dors not have a certification label listed on it, find tire and loading information - ANSWER-In the owncr’s manual