Exam (elaborations)
ABYC Electrical
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Exam of 5 pages for the course 11 Body Systems (Anatomy & Physiology at 11 Body Systems (Anatomy & Physiology (ABYC Electrical)
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ABYC Electricalhigher voltage increased capacity - correct answer-2 or More batteries connected in series
provides_________, or in parallel to provide_________
hydrogen - correct answer-Batteries gas of what
the engine negative terminal or the DC main negative bus - correct answer-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. - correct
answer-Difference between an isolation transformer and polarization transformer
800 100 - correct answer-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 - correct answer-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 - correct answer-Inverters are only tied
together when......
10 feet - correct answer-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 - correct answer-All AC cables from the shore power inlet to the main
shore power breakers shall be in conduit or supported by means of____________
neutrals - correct answer-Boats with more than one shore power inlet should never connect
________ together from multiple inlets.
Galvanic isolator - correct answer-What is the only device permitted to be installed in series
with the AC grounding conductor
6 - correct answer-Durring an installation of an galvanic isolator conductors shall be
supported and/or clamped to relive strain within ______inches of isolator case
135 - correct answer-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 - correct
answer-Isolation transformers offer engineers the ability to do what?
, automatically deals with dock-side polarity issues - correct answer-What does a polarization
transformer automatically do?
Ungrounded black grounded white - correct answer-Reverse polarity indicating devices shall
respond to the reversal of the ____________ and ________ conductors.
25,000 ohms - correct answer-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 - correct answer-One tool used to confirm the integrity of electrical supply at
the dock is ________________
open neutral - correct answer-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 - correct answer-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 - correct answer-if there is high voltage at AC generator
you should....
check slip rings they could be worn or burned - correct answer-if there is erratic voltage at
AC generator you should....
check for cycling loads, If erratic with all loads off, check governor function - correct answer-if
there is erratic frequency at AC generator you should.....
check the governor could be out of adjustment - correct answer-if there is high frequency at
AC generator you should....
auxiliary set of windings called exciter windings - correct answer-Brushless generators use
what
megohmmeter - correct answer-A device used to confirm the integrity of the winding
insulation inside generator or motor is called a
1 megohm or more - correct answer-An acceptable reading when using a megommeter to
test winding insulation is
600volts - correct answer-Where AC and DC conductors are run together or installed in the
same terminal box or enclosure the DC conductors shall have a minimum insulation voltage
of...
balanced - correct answer-multiple legs on 240 volt systems must be....
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