ABYC Electrical Updated Actual Questions and Correct Answers ()

ABYC Electrical Updated Actual Questions and Correct Answers
(2026-2027)

Question 1.
The minimum amp circuit breaker that should be used to protect a 120V water heater
circuit with a 1600-watt element would be rated at ___________ amps.

Correct Answer: A. 15


Question 2.
When testing for excessive EMF emission near a conductor or appliance, the tool of choice
is a (n):

Correct Answer: C. Gauss meter


Question 3.
What is the symbol for a variable resistor?

Correct Answer: variable resistor




Question 4.
The primary problem with using a series circuit to supply multiple loads is that:

Correct Answer: A. Voltage drop through the circuit will be excessive


Question 5.
Based on this section (Ch. 2), the most common electrical circuit problem in marine
application is:

Correct Answer: C. Unwanted open

,Question 6.
The primary by-product of excessive electrical resistance is:

Correct Answer: D. Heat


Question 7.
One horsepower equals ______________.

Correct Answer: B. 746 watts


Question 8.
Excessive electrical resistance can be caused by ____________.

Correct Answer: D. Undersized wire, loose connections, and corrosion


Question 9.
_________ through circuits on a boat is perhaps the most common problem with electrical
circuitry.

Correct Answer: D. Resistance to electrical current flow


Question 10.
When using Ohm's Law, if any two of the three values are known, the thrid value can be
calculated by ________.

Correct Answer: A., Multiplication or division


Question 11.
If the voltage in a circuit is 12 volts and the resistance is 3 Ohms, Ohm's Law can be used
to find that the rate of flow is _______ amps.

Correct Answer: C. 4


Question 12.
If resistance decreases and the voltage remains constant in a circuit, then the amperage
will _________.

Correct Answer: B. Increase


Question 13.
The unit of measure for power is the __________.

Correct Answer: A. Watt

,Question 14.
A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120 VAC will draw
__________ amps.

Correct Answer: D. 10


Question 15.
Cranking motor (engine) circuits are not required to have ___________.

Correct Answer: B. Overcurrent protection


Question 16.
In a _______ circuit, there is only one path allowed for electrical flow.

Correct Answer: C. Series


Question 17.
In a series circuit, the amperage (current) is ______________.

Correct Answer: A. The same everywhere it is measured


Question 18.
In all circuits, voltage is lost as it travels through the circuit, which is commonly referred to
as ___________.

Correct Answer: B. Voltage drop


Question 19.
The most common type of circuit fault is a(n) ______.

Correct Answer: C. Open circuit


Question 20.
The ______ is the most dangerous type of short circuit.

Correct Answer: D. Short circuit to ground


Question 21.
Inter-circuit shorts are usually caused by __________.

Correct Answer: C. An errant screw sticking through a look or wiring harness

, Question 22.
One horsepower is equal to __________ watts.

Correct Answer: A. 746


Question 23.
The primary by-product of excessive electrical resistance is __________.

Correct Answer: B. Heat


Question 24.
Based on what this section has told you, the tool of choice today for tracing shortened and
open circuits is the:

Correct Answer: D. TDR= Time-Domain Reflectometer


Question 25.
What material is recommended for clamping conductors over engines and moving
machinery according to ABYC?

Correct Answer: C. Metal


Question 26.
According to ABYC, acceptable minimum clearance for routing wire near a dry exhaust
section is:

Correct Answer: B. 9 in. (225 mm)


Question 27.
The maximum number of terminals allowed to be attached to any one terminal stud based
on ABYC Standards is:

Correct Answer: D. 4


Question 28.
How much current should flow through the DC grounding conductor in a 25-amp DC motor
circuit?

Correct Answer: B. 0 amps