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ABYC Electrical Exam Questions and Answers
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ABYC Electrical Exam Questions and Answers
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ABYC Electrical Exam Questions andAnswers
higher voltage increased capacity - Answers -2 or More batteries connected in series
provides_________, or in parallel to provide_________
hydrogen - Answers -Batteries gas of what
the engine negative terminal or the DC main negative bus - Answers -If an AC system is
installed the main AC system grounding bus shall be connected to what?
isolation transformer isolates all current crying AC system conductors and the AC
drowning conductor, Polarization transformers do not isolate the AC grounding
conductor. - Answers -Difference between an isolation transformer and polarization
transformer
800 100 - Answers -A battery switch shall be installed in the positive conductors from
each battery or battery bank with a CCA rating greater than _____amperes or _____Ah
if CCA is unavailable
green white - Answers -with 120Volt systems, the _______ and ________ get tied
together at an AC power source, but only at a source of AC power.
the inverter is operating in AC production mode - Answers -Inverters are only tied
together when......
10 feet - Answers -A standard based issue states that in shore power systems
overcorrect protection be located no more than ______ from the point of inlet into the
boat
Metal straps or clamps - Answers -All AC cables from the shore power inlet to the main
shore power breakers shall be in conduit or supported by means of____________
neutrals - Answers -Boats with more than one shore power inlet should never connect
________ together from multiple inlets.
Galvanic isolator - Answers -What is the only device permitted to be installed in series
with the AC grounding conductor
6 - Answers -Durring an installation of an galvanic isolator conductors shall be
supported and/or clamped to relive strain within ______inches of isolator case
, 135 - Answers -The galvanic isolator shall be provided with wiring terminals or wire
leads for connection, having an ampacity that is __________ percent of its nominal
rating.
step up or step down voltage from one side of the transformer to the other - Answers -
Isolation transformers offer engineers the ability to do what?
automatically deals with dock-side polarity issues - Answers -What does a polarization
transformer automatically do?
Ungrounded black grounded white - Answers -Reverse polarity indicating devices shall
respond to the reversal of the ____________ and ________ conductors.
25,000 ohms - Answers -The total impedance of polarity indicating and production
devices connected between normal current carrying conductors and the grounding
conductor shall not be less than __________
Ideal SureTest - Answers -One tool used to confirm the integrity of electrical supply at
the dock is ________________
open neutral - Answers -In Split 240/120V systems one cause for AC equipment to fail
depending on unbalanced legs is.....
check voltage, verify correct engine rpm, check all connections and wire termination
positions for integrity - Answers -If there is low voltage at AC generator you should....
check frequency for normal range, if possible, adjust voltage regulator and verify correct
engine rpm and governor setting - Answers -if there is high voltage at AC generator you
should....
check slip rings they could be worn or burned - Answers -if there is erratic voltage at AC
generator you should....
check for cycling loads, If erratic with all loads off, check governor function - Answers -if
there is erratic frequency at AC generator you should.....
check the governor could be out of adjustment - Answers -if there is high frequency at
AC generator you should....
auxiliary set of windings called exciter windings - Answers -Brushless generators use
what
megohmmeter - Answers -A device used to confirm the integrity of the winding
insulation inside generator or motor is called a
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