100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
ABYC Advanced Pretest Exam Questions & Answers (SCORED A) $10.89   Add to cart

Exam (elaborations)

ABYC Advanced Pretest Exam Questions & Answers (SCORED A)

 8 views  0 purchase
  • Course
  • ABYC Advanced Pretest
  • Institution
  • ABYC Advanced Pretest

An inter-circuit short can cause: - ANSWER -" All of the above; Unrelated circuits to operate simultaneously; Components to work at reduced capacity; An over-current situation" Which of the following is addressed by ABYC A-32? - ANSWER -Power conditioning and conversion LED navigation lights ...

[Show more]

Preview 4 out of 37  pages

  • March 13, 2024
  • 37
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • ABYC Advanced Pretest
  • ABYC Advanced Pretest
avatar-seller
IMORA
ABYC Advanced Pretest Exam
Questions & Answers (SCORED A)
A metallic shore power inlet becomes hot to the touch. Which would not be a
contributing factor? - ANSWER -Temperature rating of shore-cord insulation

An inter-circuit short can cause: - ANSWER -" All of the above; Unrelated circuits to
operate simultaneously; Components to work at reduced capacity; An over-current
situation"

Which of the following is addressed by ABYC A-32? - ANSWER -Power conditioning
and conversion

LED navigation lights are required to meet: - ANSWER -72 Colregs

Which of the following are recommended for 3-phase shore power? - ANSWER -Power
conditioning and phase-rotation monitoring

Which of the following is an example of a power-quality issue? - ANSWER -Nuisance
tripping of magnetic circuit breakers

What tool can be used instead of a power-quality analyzer to measure phase
amplitude? - ANSWER -DVOM

All of the following are functions of a generator voltage regulator EXCEPT: - ANSWER -
Control generator power factor

A true-DC wind generator might be inadvertently powered by the batteries if a ________
is not part of the installation. - ANSWER -Blocking diode

Which power sources can be seamlessly transferred? - ANSWER -" All of the above;
AC generators; Shore power; Inverters"

Which of the following needs to be considered when retrofitting an electric-propulsion
engine? - ANSWER -Proper ventilation of batteries

In a NMEA 2000 digital switching system it is necessary to use - ANSWER -Terminating
resistors

A boat's hull potential is measured: - ANSWER -Between a reference cell and main
engine negative

,Which statement is correct pertaining to a NMEA 2000 system? - ANSWER -" Both a
and b; Resistors are to be used only at both ends of the system;
NMEA cables provide power and data in a single cable"

Slower than normal engine cranking could be an indication of all the following except: -
ANSWER -Battery fully charged

Which tool could not-be used to diagnose excessive voltage drop? - ANSWER -
Ammeter

An advantage of an insulated DC ground system is: - ANSWER -Easier detection of
ground faults

Which equipment may not need to be changed when a boat built by an international
builder using 50 Hz AC is imported to the US? - ANSWER -Water Heater

Which of the following could cause a shore-power ELCI main breaker to trip? -
ANSWER -Multiple shore-power inlet neutral conductors on the load side of the ELCI
are connected

The maximum battery cable gauge that can be connected to a terminal via wingnut is: -
ANSWER -8

VFDs control the speed of electric motors (pumps, fans, hoists) by regulating ____? -
ANSWER -frequency

Do VFDs typically display fault codes, and how can you determine the nature of a fault?
- ANSWER -Yes, they do; refer to the manufacturer's list of fault codes.

According to ____ , seamless transfers between sources cannot maintain parallel for
more than I second - ANSWER -ABYCA-32

True or False: four-wire sensors are the most common configuration in today's engine-
control systems. - ANSWER -FALSE; two- and three-wire configurations are more
common.

According to ABYC A-32, "synchronization" means matching all EXCEPT - ANSWER -
amperage

Compared to traditional US power sources, _____ delivers three times the power with
only 1.5 times the conductor material. - ANSWER -three-phase power

In a delta configuration, the phase voltage is _____ the line voltage - ANSWER -equal
to

Three-phase power ______ than single-phase power - ANSWER -is more efficient

,Proper overcurrent protection for a three-phase motor requires - ANSWER -a triple-pole
breaker

Three-phase induction motors can be damaged by ____ in a three-phase power
distribution system. - ANSWER -loss of voltage

The most common cause of AC ripple from an alternator is: - ANSWER -Faulty/low-
quality rectifier diode(s)

Based on the Fourier method, total harmonic distortion is calculated using: - ANSWER -
First and third harmonics only

The distortion caused by multiple frequencies in output is called: - ANSWER -Harmonic
distortion

AC voltage transients cause all the following EXCEPT: - ANSWER -Capacitance
coupling

When attempting to diagnose intermittent power quality issues, which feature of the
power quality analyzer is used? - ANSWER -Data logging

Which function is operational when a block load is applied? - ANSWER -Volts per Hz

Which of the following components would NOT prevent a generator from creating
voltage? - ANSWER -Shorted droop CT

The following are adjustments on voltage regulators EXCEPT - ANSWER -Load gain

Electricity coming from a solar panel must be ___ before it's delivered to a battery bank:
- ANSWER -regulated

What is the first step in specifying solar capacity on a boat? - ANSWER -DC load
analysis

A semiconductor - ANSWER -exhibits properties directly between those of conductors
and insulators

Cabling from the solar-panel positive terminal to the controller should induce a voltage
drop of: - ANSWER -not more than 3.0%

Diode test function on a multi-meter (DMM) is important to ensure that: - ANSWER -
Series circuits don't have excessive resistance.

A8YC Standard A-32 addresses power-conversion systems installed between all
EXCEPT: - ANSWER -the public utility and the dockside shore-power outlet.

, Synchronization may refer to compatibility of: - ANSWER -any of the above;
voltage;frequency ;waveform

E-11.8.1 Load Calculations - __ - ANSWER -DC

"Statement A: Switching between AC power sources can be done with seamless
transfer. Statement B: Switching between AC power sources can apply the break-
before-make method." - ANSWER -Statements A and B are both True

E-11.8.1.1 The following method shall be used for calculating the total electrical load
requirements for determining the minimum size of each ___________, switchboard, and
their main conductors. Additionally, this information may be used to size the alternator,
or __________, and the battery. (See E-11.6.1.1 and ABYC E-10, Storage Batteries.) -
ANSWER -panelboard, other charging means

Per ABYC Standards, before a seamless tranfer, power sources shall be: - ANSWER -
synchronized.

When converting from a gasoline engine power source to an all-electric, which of the
following does NOT need to be considered? - ANSWER -Horsepower of the old
gasoline engine

Per ABYC E-30 standards, what is the maximum impedance for ground-fault monitoring
on an AC system with regard to electric propulsion? - ANSWER -1,000 ohms per volt

Based on ABYC E-30, if a 144 VDC electric propulsion system has a battery capacity of
240 amp-hours, what is the required AIC rating of the overcurrent protection? -
ANSWER -24,000

The best choice for mounting a digital switching power distribution module is: -
ANSWER -Follow manufacturer's recommendations.

The maximum allowable voltage drop for a DSS power distribution module is: -
ANSWER -3%

Digital switching for AC appliances is appropriate as long as ____? - ANSWER -It is not
used.

When programming electronic circuit protection in a DSS system, it is important to use
which reset feature? - ANSWER -Manual reset

Which of the following best describes the function of a galvanic isolator? - ANSWER -
Blocks DC current

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller IMORA. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.89. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82215 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.89
  • (0)
  Add to cart