ABYC MARINE ELECTRICAL DC POWER
DISTRIBUTION AND INSTALLATION CORE
TOPICS REVIEW SHEET FULL ANSWER
COLLECTION
●● When testing for excessive EMF emission near a conductor or
appliance, the tool of choice is a (n):
Answer: C. Gauss meter
●● What is the symbol for a variable resistor?
Answer: variable resistor
●● The primary problem with using a series circuit to supply multiple
loads is that:
Answer: 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:
Answer: C. Unwanted open
●● The primary by-product of excessive electrical resistance is:
Answer: D. Heat
,●● One horsepower equals ______________.
Answer: B. 746 watts
●● Excessive electrical resistance can be caused by ____________.
Answer: D. Undersized wire, loose connections, and corrosion
●● _________ through circuits on a boat is perhaps the most common
problem with electrical circuitry.
Answer: 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 ________.
Answer: 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.
Answer: C. 4
●● If resistance decreases and the voltage remains constant in a circuit,
then the amperage will _________.
Answer: B. Increase
,●● The unit of measure for power is the __________.
Answer: A. Watt
●● A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120
VAC will draw __________ amps.
Answer: D. 10
●● Cranking motor (engine) circuits are not required to have
___________.
Answer: B. Overcurrent protection
●● In a _______ circuit, there is only one path allowed for electrical
flow.
Answer: C. Series
●● In a series circuit, the amperage (current) is ______________.
Answer: 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 ___________.
Answer: B. Voltage drop
●● The most common type of circuit fault is a(n) ______.
, Answer: C. Open circuit
●● The ______ is the most dangerous type of short circuit.
Answer: D. Short circuit to ground
●● Inter-circuit shorts are usually caused by __________.
Answer: C. An errant screw sticking through a look or wiring harness
●● One horsepower is equal to __________ watts.
Answer: A. 746
●● The primary by-product of excessive electrical resistance is
__________.
Answer: B. Heat
●● Based on what this section has told you, the tool of choice today for
tracing shortened and open circuits is the:
Answer: D. TDR= Time-Domain Reflectometer
●● What material is recommended for clamping conductors over
engines and moving machinery according to ABYC?
Answer: C. Metal
DISTRIBUTION AND INSTALLATION CORE
TOPICS REVIEW SHEET FULL ANSWER
COLLECTION
●● When testing for excessive EMF emission near a conductor or
appliance, the tool of choice is a (n):
Answer: C. Gauss meter
●● What is the symbol for a variable resistor?
Answer: variable resistor
●● The primary problem with using a series circuit to supply multiple
loads is that:
Answer: 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:
Answer: C. Unwanted open
●● The primary by-product of excessive electrical resistance is:
Answer: D. Heat
,●● One horsepower equals ______________.
Answer: B. 746 watts
●● Excessive electrical resistance can be caused by ____________.
Answer: D. Undersized wire, loose connections, and corrosion
●● _________ through circuits on a boat is perhaps the most common
problem with electrical circuitry.
Answer: 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 ________.
Answer: 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.
Answer: C. 4
●● If resistance decreases and the voltage remains constant in a circuit,
then the amperage will _________.
Answer: B. Increase
,●● The unit of measure for power is the __________.
Answer: A. Watt
●● A microwave oven with a wattage of 1.2 KW (1,200 watts) and a 120
VAC will draw __________ amps.
Answer: D. 10
●● Cranking motor (engine) circuits are not required to have
___________.
Answer: B. Overcurrent protection
●● In a _______ circuit, there is only one path allowed for electrical
flow.
Answer: C. Series
●● In a series circuit, the amperage (current) is ______________.
Answer: 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 ___________.
Answer: B. Voltage drop
●● The most common type of circuit fault is a(n) ______.
, Answer: C. Open circuit
●● The ______ is the most dangerous type of short circuit.
Answer: D. Short circuit to ground
●● Inter-circuit shorts are usually caused by __________.
Answer: C. An errant screw sticking through a look or wiring harness
●● One horsepower is equal to __________ watts.
Answer: A. 746
●● The primary by-product of excessive electrical resistance is
__________.
Answer: B. Heat
●● Based on what this section has told you, the tool of choice today for
tracing shortened and open circuits is the:
Answer: D. TDR= Time-Domain Reflectometer
●● What material is recommended for clamping conductors over
engines and moving machinery according to ABYC?
Answer: C. Metal
