ABYC ELECTRICAL STUDY 1 Questions
And Answers
commutator a slip ring that serves to reverse the direction in which an electrical current
flows from the generator
armature the iron the coil goes on
excitation (ac alternator generators) on the rotor
voltage difference in potiental
for sailboa...
commutator a slip ring that serves to reverse the direction in which an electrical current
flows from the generator
armature the iron the coil goes on
excitation (ac alternator generators) on the rotor
voltage difference in potiental
for sailboats the top of the lighting rod should be 6in above everything else on the mast
and filed to a sharp point
independent breaker to activate inverter
ohm meter reads amps AC only
, ABYC ELECTRICAL STUDY 1 Questions
And Answers
single phase needs netural
ground fault if electricity leaks from intended paths in these 2 wires ( ac hot and neutral)
battery isolator charge batteries with 1 alternator
galvanic isolator blocks bad DC currents
only at the source of power the neutral and ground should be connected
the minimum amp circuit breaker that should be used to protect a 120v water heater circuit with
a 1600-watt element would be rated at________amps. 15
when testing for excessive EMF emission near a conductor or appliance, the tool of choice
gauss meter
, ABYC ELECTRICAL STUDY 1 Questions
And Answers
the primary problem with using a series circuit to supply multiple loads is voltage drop
through the circuit will be excessive
based on this section, the most common electrical circuit problem in marine applications is
unwanted open
the primary by-product of excessive electrical resistance is heat
one horsepower equals 746 watts
excessive electrical resistance can be caused by undersized wires,loose connections and
corrosion
gauss meter helps detect sources of magnetic interference that affect electronic
compasses,autopliots and others
an intercircuit short circuit is one which unwanted conductors , such as an errant screw,
completes a circuit in ways it wasn't designed to be connected
, ABYC ELECTRICAL STUDY 1 Questions
And Answers
time-domain reflectometer can pinpoint the location of short circuts and open circuits
BASED ON ABYC STANDARDS, A 1,000 WATT 120VAC WATER HEATER, WHOSE
SUPPLY CABLE HAS 105C THERMAL RATING, IS RUN OUTSIDE OF THE ENGINE
ROOM AND IS NOT BUNDLED WITH ANY OTHER CONDUCTORS. WHAT MINIMUM
SIZE WIRE GAUGE WILL BE REQUIRED TO SERVICE THIS CIRCUIT? 16 gauge
WHICH OF THE FOLLOWING COMPONENTS DOES NOT REQUIRE OVERCURRENT
PROTECTION? STARTER MOTOR
1. EXCESSIVE ELECTRICAL RESISTANCE CAN BE CAUSED BY: UNDERSIZED
WIRE, LOOSE CONNECTIONS AND CORROSION
1. THE MINIMUM AMP CIRCUIT BREAKER THAT SHOULD BE USED TO PROTECT A
120V WATER HEATER CIRCUIT WITH A 1600-WATT ELEMENT WOULD BE RATED
AT___________ AMPS 15 AMPS
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