Download RVIA RV Registered Technician Study Guide - Section B (2017 DACUM) - Electrical Systems and more Exams Nursing in PDF only on Docsity!
RVIA |! RV |! Registered |! Technician |! Study |!
Guide |! - |! Section |! B |! (2017 |! DACUM) |! - |!
Electrical |! Systems |! Exam |! with |! verified |!
solutions
What |! is |! the |! proper |! multimeter |! dial |! setting |! when |! testing |! AC |! voltage? |! (B6a) A. |! Ω B. |! DCV C. |! ACV D. |! Hz ACV To |! test |! DC |! voltage, |! connect |! the |! test |! lead |! colored |! black |! to |! _______________. |! (B6a) A. |! a |! ground. B. |! the |! white |! wire. C. |! to |! the |! + |! battery |! terminal. D. |! a |! fused |! test |! wire. a |! ground. Using |! the |! 50V |! DC |! scale, |! the |! correct |! meter |! reading |! is |! _________VDC. |! (B6a) A. |! 120 B. |! 24
C. |! 55
D. |! 6
To |! properly |! measure |! current |! with |! a |! VOM |! in |! a |! DC |! circuit, |! you |! must |! connect |! the |! VOM |! _________. |! (B6a) A. |! in |! parallel |! with |! the |! source B. |! across |! the |! component C. |! in |! series |! with |! the |! source D. |! on |! the |! positive |! side in |! series |! with |! the |! source To |! protect |! the |! meter |! when |! doing |! an |! Ohms |! test, |! ensure |! that |! the___________. |! (B6a) A. |! meter |! is |! properly |! zeroed B. |! meter |! is |! set |! on |! the |! proper |! scale C. |! the |! circuit |! is |! de-energized D. |! meter |! has |! the |! correct |! polarity the |! circuit |! is |! de-energized When |! reading |! voltage |! with |! a |! voltmeter, |! you |! should |! always |! start |! with |! the |! _______________. |! (B6a) A. |! lowest |! voltage |! scale. B. |! lowest |! ohmmeter |! scale. C. |! highest |! voltage |! scale. D. |! highest |! ohmmeter |! scale. highest |! voltage |! scale.
D. |! one |! load |! of |! the |! meter |! must |! be |! grounded |! to |! a |! common |! ground. disconnected. Which |! of |! the |! below |! meters |! would |! NOT |! be |! contained |! in |! a |! multimeter? |! (B6a) A. |! Voltmeter. B. |! Ohmmeter. C. |! Watt |! meter. D. |! Milliamp |! meter. Watt |! meter. When |! using |! a |! multimeter |! to |! measure |! voltage, |! one |! should |! not |! _________________. |! (B6a) A. |! observe |! polarity |! of |! meter |! probes. B. |! start |! on |! the |! highest |! voltage |! scale. C. |! ensure |! meter |! function |! switch |! is |! set |! properly. D. |! set |! on |! the |! highest |! ohm |! scale. set |! on |! the |! highest |! ohm |! scale. The |! function |! of |! a |! multimeter |! is |! to |! ________________. |! (B6a) A. |! test |! volts |! & |! ohms. B. |! apply |! variable |! loads |! to |! battery. C. |! test |! diode |! type |! battery |! isolators. D. |! measure |! specific |! gravity |! in |! electrolytes. test |! volts |! & |! ohms. If |! the |! needle |! of |! a |! voltmeter |! deflects |! off |! scale |! to |! the |! left, |! you |! should |! _______________. |! (B6a) A. |! change |! to |! a |! higher |! voltage |! scale.
B. |! change |! to |! a |! lower |! voltage |! scale. C. |! reverse |! the |! test |! leads. D. |! replace |! the |! defective |! voltmeter. reverse |! the |! test |! leads. When |! using |! a |! VOM |! to |! measure |! current, |! always |! start |! _______________. |! (B6a) A. |! at |! the |! lowest |! scale. B. |! with |! the |! highest |! volt |! scale. C. |! at |! the |! highest |! scale. D. |! with |! the |! lowest |! ohm |! scale. at |! the |! highest |! scale. Basic |! troubleshooting |! of |! the |! 120 |! VAC |! system |! does |! not |! require |! the |! use |! of |! a |! __________________. |! (B6a) A. |! polarity |! checker. B. |! galvanometer. C. |! multimeter. D. |! GFI |! tester. galvanometer. To |! measure |! current |! drawn |! by |! a |! motor |! using |! a |! clamp-on |! ammeter, |! place |! the |! sensor |! clamp |! around |! the |! ______________. |! (B6b) A. |! ground |! wire. B. |! black |! wire. C. |! white |! and |! black |! wire. D. |! black, |! white |! and |! green |! wires. black |! wire.
D. |! wattage. resistance. A |! continuity |! test |! is |! performed |! with |! an |! ____________________. |! (B6c) A. |! ammeter. B. |! ohmmeter. C. |! wire |! lead. D. |! circuit |! tester. ohmmeter. When |! testing |! a |! good |! diode |! with |! an |! ohmmeter |! and |! then |! measuring |! this |! part |! again |! with |! the |! leads |! reversed, |! you |! should |! have |! _____________. |! (B6c) A. |! two |! low |! readings. B. |! two |! high |! (infinite) |! readings. C. |! one |! high |! (infinite) |! and |! one |! low |! reading. D. |! this |! is |! an |! incorrect |! test. one |! high |! (infinite) |! and |! one |! low |! reading. To |! properly |! test |! that |! GFCI |! protection |! exists |! for |! any |! receptacle |! down |! line |! of |! a |! GFCI |! protection |! device, |! you |! should |! __________. |! (B6d) A. |! turn |! off |! the |! main |! breaker. B. |! unplug |! the |! refrigerator. C. |! use |! a |! GFCI |! fault |! creation |! tester. D. |! push |! the |! test |! button |! on |! the |! breaker. use |! a |! GFCI |! fault |! creation |! tester. A |! hydrometer |! is |! used |! for |! _____________. |! (B6e) A. |! test |! volts |! & |! ohms.
B. |! measuring |! specific |! gravity |! in |! electrolytes. C. |! test |! printed |! circuit |! boards. D. |! test |! diode |! type |! battery |! electrolytes. measuring |! specific |! gravity |! in |! electrolytes. The |! diode |! tester |! is |! designed |! to |! test |! diodes |! found |! in |! ______________. |! (B6f) A. |! fan |! and |! limit |! switches. B. |! relay |! coils. C. |! battery |! isolators |! and |! converter |! systems. D. |! audio |! sound |! systems. battery |! isolators |! and |! converter |! systems. Current |! supplied |! by |! commercial |! power |! lines |! and |! RV |! generators |! is |! known |! as |! ___________. |! (B7b) A. |! Alternating |! Current. B. |! Direct |! Current. C. |! Inducted |! Current. D. |! Accelerating |! Current. Alternating |! Current. Black |! (Hot), |! White |! (Neutral) |! and |! Ground |! provide |! ________volts. |! (B7b) A. |! 12 B. |! 120 C. |! 240 D. |! 480 120 An |! open |! switch |! will |! _________electricity. |! (B8a)
Circuit |! has |! a |! short. The |! opposition |! to |! the |! flow |! of |! electricity |! is |! called |! ________. |! (B8d) A. |! inductance. B. |! amperage. C. |! reluctance. D. |! resistance. resistance. Resistance |! is |! ___________. |! (B8d) A. |! electrical |! pressure |! that |! moves |! electrons. B. |! electrical |! flow. C. |! opposition |! to |! electrical |! flow. D. |! electrical |! flow |! capacitance. opposition |! to |! electrical |! flow. What |! should |! be |! performed |! when |! a |! bonding |! strap |! or |! bonding |! screw |! is |! present |! in |! a |! distribution |! panel |! board |! intended |! for |! use |! in |! an |! RV? |! (B8e) A. |! Attach |! strap |! or |! screw |! to |! panel. B. |! Discard |! strap |! or |! screw. C. |! Add |! electrical |! clamp |! harness. D. |! Attach |! strap |! or |! screw |! to |! ground. Discard |! strap |! or |! screw. A |! polarity |! tester |! is |! used |! to |! _______________. |! (B8f) A. |! determine |! correct |! battery |! hookup. B. |! test |! the |! 12-volt |! DC |! system. C. |! determine |! magnet |! poles.
D. |! test |! the |! 120-volt |! AC |! system. test |! the |! 120-volt |! AC |! system. The |! narrow |! blade |! of |! a |! three |! prong |! 120v |! plug |! is |! connected |! to |! ______________. |! (B8f) A. |! live |! (hot) |! conductor. B. |! neutral |! wire. C. |! ground |! connection. D. |! insulating |! wire. live |! (hot) |! conductor. Current |! flow |! is |! measured |! in |! _____________. |! (B8h) A. |! ohms. B. |! volts. C. |! amperes. D. |! RMS. amperes. Current |! is |! _____________. |! (B8h) A. |! electrical |! pressure |! that |! moves |! electrons. B. |! electron |! flow. C. |! opposition |! to |! electrical |! flow. D. |! electrical |! pressure |! that |! measures |! neutrons. electron |! flow. Voltage |! is |! ____________. |! (B8i) A. |! electrical |! pressure |! that |! moves |! electrons. B. |! electrical |! flow.
A. |! find |! electrical |! faults |! that |! cause |! circuit |! breakers |! to |! trip. B. |! prevent |! annoying |! shocks |! from |! static |! electricity. C. |! verify |! the |! proper |! amount |! insulation |! has |! been |! installed. D. |! assure |! the |! RV |! user’s |! safety. assure |! the |! RV |! user's |! safety. An |! inverter |! is |! used |! to |! change |! _______________. |! (B8l) A. |! 120V |! AC |! to |! 12V |! DC B. |! 12V |! DC |! to |! 24V |! DC C. |! 12V |! DC |! to |! 120V |! AC D. |! 120V |! AC |! to |! 24V |! DC 12V |! DC |! to |! 120V |! AC The |! type |! of |! power |! produced |! by |! the |! oldest |! type |! of |! RV |! converter |! is |! _______________. |! (B8m) A. |! 12 |! volts |! AC. B. |! 12 |! volts |! pure |! DC. C. |! 12 |! volts |! unfiltered |! DC. D. |! 12 |! volts |! square |! wave. 12 |! volts |! unfiltered |! DC. The |! batteries |! used |! in |! most |! RV |! applications |! are |! ___________? |! (B8q) A. |! Lead/carbon. B. |! Steel/carbon. C. |! Lead/acid. D. |! Lithium/acid. Lead/acid.
What |! type |! of |! battery |! is |! used |! in |! an |! RV's |! 12v |! system? |! (B8q) A. |! Alkaline. B. |! Lead |! Acid. C. |! Nickel |! Cadmium. D. |! Dry |! Cell. Lead |! Acid. The |! specific |! gravity |! of |! a |! fully |! charged |! lead |! acid |! battery |! is________. |! (B8q) A. |! 1. B. |! 1. C. |! 1. D. |! 1.
Which |! type |! of |! battery |! is |! most |! often |! used |! for |! the |! chassis |! battery? |! (B8q) A. |! Lead |! Acid |! Gelled. B. |! Deep-Cycle. C. |! Nickel |! Cadmium. D. |! Automotive. Automotive. The |! function |! of |! an |! auto |! transfer |! switch |! _________________. |! (B8r) A. |! connects |! all |! power |! sources |! together. B. |! only |! used |! with |! battery |! chargers. C. |! allows |! only |! one |! power |! source |! to |! the |! vehicle's |! circuit |! at |! a |! time. D. |! move |! vehicle |! electrical |! control |! from |! front |! dash |! area |! to |! entertainment |! center.
C. |! allow |! current |! to |! leak |! to |! ground. D. |! induces |! electricity |! to |! other |! wires. transfer |! electricity |! from |! one |! point |! to |! another. A |! capacitor |! is |! a |! device |! that |! _________________. |! (B8z) A. |! temporarily |! stores |! electrical |! energy. B. |! is |! used |! to |! check |! electrical |! pressure. C. |! indicates |! direction |! of |! a |! magnetic |! field. D. |! measures |! electrostatic |! force |! between |! charged |! particles. temporarily |! stores |! electrical |! energy. Frequency |! is |! also |! known |! as |! ______________. |! (B8aa) A. |! columns. B. |! amplitude. C. |! hertz. D. |! capacitance. hertz. What |! is |! carbon |! monoxide? |! (B8bb) A. |! an |! inert |! welding |! gas. B. |! a |! gas |! found |! in |! propane. C. |! a |! toxic |! gas |! that |! has |! no |! odor, |! taste |! or |! color. D. |! an |! additive |! in |! ink, |! paint |! and |! rubber. a |! toxic |! gas |! that |! has |! no |! odor, |! taste |! or |! color. A |! device, |! in |! a |! circuit, |! which |! utilizes |! power |! from |! the |! source |! is |! called |! a |! _____________. |! (B8cc) A. |! conductor.
B. |! battery. C. |! generator. D. |! load. load. A |! control |! device |! which |! opens |! and |! closes |! in |! a |! circuit |! is |! called |! a |! ______________. |! (B8dd) A. |! battery. B. |! switch. C. |! resistor. D. |! load. switch. The |! power |! which |! is |! consumed |! by |! an |! AC |! electric |! toaster |! is |! called |! ______________. |! (B8ee) A. |! wattage. B. |! ohms. C. |! load. D. |! inductance. wattage. What |! does |! the |! electrical |! term |! "watts" |! mean? |! (B8ff) A. |! Load |! current. B. |! Voltage |! drop. C. |! Battery |! ampacity. D. |! Measurement |! of |! electrical |! power. Measurement |! of |! electrical |! power.
D. |! use |! a |! butt |! connector. cut |! it |! off |! and |! start |! over |! again. What |! is |! an |! obvious |! difference |! in |! 120V |! AC |! vs |! 12V |! DC |! RV |! wiring? |! (B9e&f) A. |! Color |! of |! insulation. B. |! Size |! of |! wire. C. |! Stranded |! wire |! versus |! solid. |! D. |! Ampacity. Stranded |! wire |! versus |! solid. A |! 10-3 |! non-metallic |! sheathed |! cable |! consists |! of |! _____________________. |! (B9f) A. |! two |! hots |! (black |! and |! red), |! one |! neutral |! (white), |! and |! one |! ground |! (bare |! or |! green). B. |! two |! hots |! (black |! and |! blue), |! one |! neutral |! (white), |! and |! one |! ground |! (green). |! C. |! two |! hots |! (black |! and |! white), |! one |! neutral |! (white), |! and |! one |! ground |! (green). D. |! two |! hots |! (black |! and |! red), |! one |! neutral |! (white), |! and |! one |! ground |! (brown). two |! hots |! (black |! and |! red), |! one |! neutral |! (white), |! and |! one |! ground |! (bare |! or |! green). What |! gauge |! number |! indicates |! the |! largest |! diameter |! copper |! wire? |! (B9g) A. |! 0 B. |! 00 C. |! 14 D. |! 12 00 As |! the |! gauge |! of |! copper |! wire |! increases, |! its |! diameter |! ________________. |! (B9g) A. |! decreases |! in |! size
B. |! changes |! composition C. |! increases |! in |! size D. |! varies |! in |! length decreases |! in |! size The |! amount |! of |! amperage |! that |! can |! be |! carried |! by |! a |! 10-gauge |! wire |! versus |! a |! 16-gauge |! wire |! is |! ___________. |! (B9g) A. |! lower. B. |! higher. C. |! equal. D. |! not |! measurable. higher. What |! procedure |! must |! be |! used |! when |! passing |! all |! conductors |! through |! bulkheads |! and/or |! partitions? |! (B9i) A. |! Employ |! clamp |! & |! grommets |! to |! prevent |! chaffing. B. |! Wire |! tie |! all |! parallel |! wires. C. |! Add |! heat |! retardant |! material. D. |! Separate |! dissimilar |! wires |! colors. Employ |! clamp |! & |! grommets |! to |! prevent |! chaffing. When |! making |! a |! 120V |! AC |! connection |! to |! a |! screw, |! the |! wire |! should |! be |! circled |! around |! the |! screw |! post |! connection |! in |! a |! _________direction. |! (B9j) A. |! Counter-clockwise B. |! left |! hand C. |! clockwise D. |! opposite clockwise
