ABYC ELECTRICAL 2 EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS.
D - ANS ABYC standard ________ applies to inverters
A. E-2
B. A-27
C. A-28
D. A - 31
A - ANS A true RMS voltmeter is required to accuralty check output voltage from a(n):
A. non-sinusoidal output inverter
B. Isolation transformer
C. Inverter DC input
D. Galvanic isolator
C - ANS An AC voltmeter is required at the panel if the boat is equipped with:
A. A DC windlass
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,B. An AC- powered water heater
C. An inverter
D. AC- powered reading lamps
C - ANS All of the following could cause a conductor to overheat except.
A. Undersized conductor
B. Excessive Amperage
C. Insulation temp rating too low
D. Corroded connector
A - ANS Tech A says that AC and DC are able to run together down the same conductor. Tech
B says that this is technically impossible which tech is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither tech
D - ANS To check for charger output to the battery de-enegize charger check batter open -
circuit voltage re-energize the charger and check for a voltage ________V DC or more
Conductance tester
A. Rise of 14
B. Drop of 0.5
C. Drop pf 14
D. Rise of 0.5
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,C - ANS The tool of choice for testing AC generator winding insulation integrity is a:
A. TDR
B. Fox and hound
C. Megohmmeter
D. Clamp - type ammeter
B - ANS On a brushless generator a possible cause for low AC voltage output under load could
be:
A. High engin RPM
B. Faulty exciter winding diode rectifier
C. Faulty output circuit breaker
D. Excessively high DC voltage supply
A - ANS All of the following could cause an overheated electrical connection except:
A. Conductor with an excessively high insulation temperature rating
B. Loose terminal connection
C. Corroded connection
D. Undersized conductor for the load demand
B - ANS When trouble shooting AC appliances and equipment for safety considerations the
tech should do all of the following except
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A. Use lock out and tag out procedures
B. By-pass over current devices when possible
C. De-enegrgize the circuit whenever possible
D. Not wear jewelry
C - ANS For Charging the battery, the alternator produces alternating current that must be
changed to direct current by the.
A. Solenoid
B. Starter
C. Rectifier
D. Voltage regulator
C - ANS On an inverter that does not provide a true sine wave output, low voltage
troubleshoots must be accomplished using a(n) _________________ type DVOM
A. Analog
B. Average responding
C. True RMS
D. Oscillating
A - ANS A tech is installing the cable run from the batteries to the main DC pannelboard on a
boat as part of a refit. The boat has a 12-volt system, and the distance from panel to batteries is
15ft. The max current draw from panel is calculated at 90 amps. what gauge cable should you
use?
A. 0AWG
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS 100% PASS.
D - ANS ABYC standard ________ applies to inverters
A. E-2
B. A-27
C. A-28
D. A - 31
A - ANS A true RMS voltmeter is required to accuralty check output voltage from a(n):
A. non-sinusoidal output inverter
B. Isolation transformer
C. Inverter DC input
D. Galvanic isolator
C - ANS An AC voltmeter is required at the panel if the boat is equipped with:
A. A DC windlass
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,B. An AC- powered water heater
C. An inverter
D. AC- powered reading lamps
C - ANS All of the following could cause a conductor to overheat except.
A. Undersized conductor
B. Excessive Amperage
C. Insulation temp rating too low
D. Corroded connector
A - ANS Tech A says that AC and DC are able to run together down the same conductor. Tech
B says that this is technically impossible which tech is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither tech
D - ANS To check for charger output to the battery de-enegize charger check batter open -
circuit voltage re-energize the charger and check for a voltage ________V DC or more
Conductance tester
A. Rise of 14
B. Drop of 0.5
C. Drop pf 14
D. Rise of 0.5
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,C - ANS The tool of choice for testing AC generator winding insulation integrity is a:
A. TDR
B. Fox and hound
C. Megohmmeter
D. Clamp - type ammeter
B - ANS On a brushless generator a possible cause for low AC voltage output under load could
be:
A. High engin RPM
B. Faulty exciter winding diode rectifier
C. Faulty output circuit breaker
D. Excessively high DC voltage supply
A - ANS All of the following could cause an overheated electrical connection except:
A. Conductor with an excessively high insulation temperature rating
B. Loose terminal connection
C. Corroded connection
D. Undersized conductor for the load demand
B - ANS When trouble shooting AC appliances and equipment for safety considerations the
tech should do all of the following except
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A. Use lock out and tag out procedures
B. By-pass over current devices when possible
C. De-enegrgize the circuit whenever possible
D. Not wear jewelry
C - ANS For Charging the battery, the alternator produces alternating current that must be
changed to direct current by the.
A. Solenoid
B. Starter
C. Rectifier
D. Voltage regulator
C - ANS On an inverter that does not provide a true sine wave output, low voltage
troubleshoots must be accomplished using a(n) _________________ type DVOM
A. Analog
B. Average responding
C. True RMS
D. Oscillating
A - ANS A tech is installing the cable run from the batteries to the main DC pannelboard on a
boat as part of a refit. The boat has a 12-volt system, and the distance from panel to batteries is
15ft. The max current draw from panel is calculated at 90 amps. what gauge cable should you
use?
A. 0AWG
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
