ABYC Electrical Questions with 100% Correct
Answers
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.
A. 15
When testing for excessive EMF emission near a conductor or appliance, the tool of
choice is a (n):
C. Gauss meter
What is the symbol for a variable resistor?
variable resistor
The primary problem with using a series circuit to supply multiple loads is that:
A. Voltage drop through the circuit will be excessive
Based on this section (Ch. 2), the most common electrical circuit problem in marine
application is:
C. Unwanted open
The primary by-product of excessive electrical resistance is:
D. Heat
One horsepower equals ______________.
B. 746 watts
Excessive electrical resistance can be caused by ____________.
D. Undersized wire, loose connections, and corrosion
,_________ through circuits on a boat is perhaps the most common problem with
electrical circuitry.
D. Resistance to electrical current flow
When using Ohm's Law, if any two of the three values are known, the thrid value can
be calculated by ________.
A., Multiplication or division
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.
C. 4
If resistance decreases and the voltage remains constant in a circuit, then the amperage
will _________.
B. Increase
The unit of measure for power is the __________.
A. Watt
A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120 VAC will draw
__________ amps.
D. 10
Cranking motor (engine) circuits are not required to have ___________.
B. Overcurrent protection
In a _______ circuit, there is only one path allowed for electrical flow.
C. Series
,In a series circuit, the amperage (current) is ______________.
A. The same everywhere it is measured
In all circuits, voltage is lost as it travels through the circuit, which is commonly
referred to as ___________.
B. Voltage drop
The most common type of circuit fault is a(n) ______.
C. Open circuit
The ______ is the most dangerous type of short circuit.
D. Short circuit to ground
Inter-circuit shorts are usually caused by __________.
C. An errant screw sticking through a look or wiring harness
One horsepower is equal to __________ watts.
A. 746
The primary by-product of excessive electrical resistance is __________.
B. Heat
Based on what this section has told you, the tool of choice today for tracing shortened
and open circuits is the:
D. TDR= Time-Domain Reflectometer
What material is recommended for clamping conductors over engines and moving
machinery according to ABYC?
, C. Metal
According to ABYC, acceptable minimum clearance for routing wire near a dry
exhaust section is:
B. 9 in. (225 mm)
The maximum number of terminals allowed to be attached to any one terminal stud
based on ABYC Standards is:
D. 4
How much current should flow through the DC grounding conductor in a 25-amp DC
motor circuit?
B. 0 amps
Conductors of #10 AWG and larger shall be permitted to be connected in parallel
_______
C. Where the ampacity of each individual conductors is sufficient to carry the entire load
current shared by the parallel conductors.
A technician is installing the cable run from the batteries to the main DC panelboard on
a boat as part of a refit. the boat has a 12-volt system, and the distance from the panel to
batteries is 15 ft (approximately 5 m). The maximum current draw from the panel is
calculated at 90 amps. What gauge cable should be used at a minimum to maintain
Standards compliance?
A. 0 AWG
DC grounded conductors on new boats that are also equipped with AC systems should
use what color insulation?
Answers
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.
A. 15
When testing for excessive EMF emission near a conductor or appliance, the tool of
choice is a (n):
C. Gauss meter
What is the symbol for a variable resistor?
variable resistor
The primary problem with using a series circuit to supply multiple loads is that:
A. Voltage drop through the circuit will be excessive
Based on this section (Ch. 2), the most common electrical circuit problem in marine
application is:
C. Unwanted open
The primary by-product of excessive electrical resistance is:
D. Heat
One horsepower equals ______________.
B. 746 watts
Excessive electrical resistance can be caused by ____________.
D. Undersized wire, loose connections, and corrosion
,_________ through circuits on a boat is perhaps the most common problem with
electrical circuitry.
D. Resistance to electrical current flow
When using Ohm's Law, if any two of the three values are known, the thrid value can
be calculated by ________.
A., Multiplication or division
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.
C. 4
If resistance decreases and the voltage remains constant in a circuit, then the amperage
will _________.
B. Increase
The unit of measure for power is the __________.
A. Watt
A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120 VAC will draw
__________ amps.
D. 10
Cranking motor (engine) circuits are not required to have ___________.
B. Overcurrent protection
In a _______ circuit, there is only one path allowed for electrical flow.
C. Series
,In a series circuit, the amperage (current) is ______________.
A. The same everywhere it is measured
In all circuits, voltage is lost as it travels through the circuit, which is commonly
referred to as ___________.
B. Voltage drop
The most common type of circuit fault is a(n) ______.
C. Open circuit
The ______ is the most dangerous type of short circuit.
D. Short circuit to ground
Inter-circuit shorts are usually caused by __________.
C. An errant screw sticking through a look or wiring harness
One horsepower is equal to __________ watts.
A. 746
The primary by-product of excessive electrical resistance is __________.
B. Heat
Based on what this section has told you, the tool of choice today for tracing shortened
and open circuits is the:
D. TDR= Time-Domain Reflectometer
What material is recommended for clamping conductors over engines and moving
machinery according to ABYC?
, C. Metal
According to ABYC, acceptable minimum clearance for routing wire near a dry
exhaust section is:
B. 9 in. (225 mm)
The maximum number of terminals allowed to be attached to any one terminal stud
based on ABYC Standards is:
D. 4
How much current should flow through the DC grounding conductor in a 25-amp DC
motor circuit?
B. 0 amps
Conductors of #10 AWG and larger shall be permitted to be connected in parallel
_______
C. Where the ampacity of each individual conductors is sufficient to carry the entire load
current shared by the parallel conductors.
A technician is installing the cable run from the batteries to the main DC panelboard on
a boat as part of a refit. the boat has a 12-volt system, and the distance from the panel to
batteries is 15 ft (approximately 5 m). The maximum current draw from the panel is
calculated at 90 amps. What gauge cable should be used at a minimum to maintain
Standards compliance?
A. 0 AWG
DC grounded conductors on new boats that are also equipped with AC systems should
use what color insulation?
