IYRS Electrical ABYC Exam
AC receptacles may be used for DC service based on ABYC standards as
long as they are - ✔ ✔ Never used for DC service
Motor circuits that do not provide their own integrated thermal cutout
must be fused based on - ✔ ✔ Motor vendor recommendations
When testing for a non-functional tachometer on a Diesel engine with a
signal generator as the rpm signal source, the technician should use -
✔ ✔ a DVOM set to the AC volts scale
When testing a temperature gauge, the technician removes the wire
from the engine sending unit and grounds it to the engine block. the
gauge then reads full scale. the gauge did not function before. The
problem is - ✔ ✔ A faulty sending unit
Tech A says that combined AC/DC panel boards are grounded via the
DC negative bus. Tech B says that the panel board should be grounded
to the AC grounding bus. which tech is correct - ✔ ✔ Tech B
CO monitors will detect all the following except - ✔ ✔ Smoke
The most common tool used in a corrosion survey is a - ✔ ✔
portable hull potential meter
Appropriate bonding conductor sizing for a system tied in to offer
lightning protections ____ based on ABYC - ✔ ✔ 6 AWG
A polarity indicator light that is glowing more dimly than normal could
be an indicator of - ✔ ✔ An open circuit in the neutral-to-ground
link at an AC generator
, The RMS multiplier you use to determine harmonic distortion in an AC
power supply is - ✔ ✔ 1.414
When clamping a shore power cord and activating AC circuits one by
one, the technician notices that the AC leakage current measured keeps
getting higher as each appliance is turned on. This most likely indicates
- ✔ ✔ A neutral-to-ground link at the boats AC panel board
When installing inverter in a split bus application, it is important to
provide - ✔ ✔ an isolated hot bus and an isolated neutral bus
The best fuse type to use for the DC feed to the inverter is - ✔ ✔
Class T
On an inverter that does not provide a true sine wave output, low-
voltage troubleshooting must be accomplished using a(n) _______-type
DVOM - ✔ ✔ True RMS
as part of an inverter installation, a battery switch is required if the DC
power source has a cumulative CCA rating of _____ or more - ✔ ✔
801
The tool of choice for determining an inverter's level of EMI is the - ✔
✔ Gauss meter
According to ABYC, the shore-power grounded conductor should - ✔
✔ Not be grounded onboard the boat
If a customer complains about receiving shocks from his/her boat when
the boat is plugged into shore power, the first test should be a - ✔ ✔
polarity check of the shore cord
if a customer complains of low voltage at the
AC receptacles may be used for DC service based on ABYC standards as
long as they are - ✔ ✔ Never used for DC service
Motor circuits that do not provide their own integrated thermal cutout
must be fused based on - ✔ ✔ Motor vendor recommendations
When testing for a non-functional tachometer on a Diesel engine with a
signal generator as the rpm signal source, the technician should use -
✔ ✔ a DVOM set to the AC volts scale
When testing a temperature gauge, the technician removes the wire
from the engine sending unit and grounds it to the engine block. the
gauge then reads full scale. the gauge did not function before. The
problem is - ✔ ✔ A faulty sending unit
Tech A says that combined AC/DC panel boards are grounded via the
DC negative bus. Tech B says that the panel board should be grounded
to the AC grounding bus. which tech is correct - ✔ ✔ Tech B
CO monitors will detect all the following except - ✔ ✔ Smoke
The most common tool used in a corrosion survey is a - ✔ ✔
portable hull potential meter
Appropriate bonding conductor sizing for a system tied in to offer
lightning protections ____ based on ABYC - ✔ ✔ 6 AWG
A polarity indicator light that is glowing more dimly than normal could
be an indicator of - ✔ ✔ An open circuit in the neutral-to-ground
link at an AC generator
, The RMS multiplier you use to determine harmonic distortion in an AC
power supply is - ✔ ✔ 1.414
When clamping a shore power cord and activating AC circuits one by
one, the technician notices that the AC leakage current measured keeps
getting higher as each appliance is turned on. This most likely indicates
- ✔ ✔ A neutral-to-ground link at the boats AC panel board
When installing inverter in a split bus application, it is important to
provide - ✔ ✔ an isolated hot bus and an isolated neutral bus
The best fuse type to use for the DC feed to the inverter is - ✔ ✔
Class T
On an inverter that does not provide a true sine wave output, low-
voltage troubleshooting must be accomplished using a(n) _______-type
DVOM - ✔ ✔ True RMS
as part of an inverter installation, a battery switch is required if the DC
power source has a cumulative CCA rating of _____ or more - ✔ ✔
801
The tool of choice for determining an inverter's level of EMI is the - ✔
✔ Gauss meter
According to ABYC, the shore-power grounded conductor should - ✔
✔ Not be grounded onboard the boat
If a customer complains about receiving shocks from his/her boat when
the boat is plugged into shore power, the first test should be a - ✔ ✔
polarity check of the shore cord
if a customer complains of low voltage at the
