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,The minimum amp circuit breaker that should be used to A. 15
protect a 120V water heater circuit with a 1600-watt
element would be rated at ___________ amps.
When testing for excessive EMF emission near a C. Gauss meter
conductor or appliance, the tool of choice is a (n):
What is the symbol for a variable resistor? variable resistor
The primary problem with using a series circuit to supply A. Voltage drop through the circuit will be excessive
multiple loads is that:
Based on this section (Ch. 2), the most common electrical C. Unwanted open
circuit problem in marine application is:
The primary by-product of excessive electrical resistance D. Heat
is:
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 D. Resistance to electrical current flow
common problem with electrical circuitry.
When using Ohm's Law, if any two of the three values are A., Multiplication or division
known, the thrid value can be calculated by ________.
If the voltage in a circuit is 12 volts and the resistance is 3 C. 4
Ohms, Ohm's Law can be used to find that the rate of flow
is _______ amps.
If resistance decreases and the voltage remains constant B. Increase
in a circuit, then the amperage will _________.
The unit of measure for power is the __________. A. Watt
A microwave oven with a wattage of 1.2 KW (1,200 watts) D. 10
and a 120 VAC will draw __________ amps.
Cranking motor (engine) circuits are not required to have B. Overcurrent protection
___________.
, In a _______ circuit, there is only one path allowed for C. Series
electrical flow.
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, B. Voltage drop
which is commonly referred to as ___________.
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 B. Heat
is __________.
Based on what this section has told you, the tool of choice D. TDR= Time-Domain Reflectometer
today for tracing shortened and open circuits is the:
What material is recommended for clamping conductors C. Metal
over engines and moving machinery according to ABYC?
According to ABYC, acceptable minimum clearance for B. 9 in. (225 mm)
routing wire near a dry exhaust section is:
The maximum number of terminals allowed to be attached D. 4
to any one terminal stud based on ABYC Standards is:
How much current should flow through the DC grounding B. 0 amps
conductor in a 25-amp DC motor circuit?
Conductors of #10 AWG and larger shall be permitted to C. Where the ampacity of each individual conductors is sufficient to carry the entire
be connected in parallel _______ load current shared by the parallel conductors.