ABYC Electrical 2 Exam with correct detailed solutions
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ABYC standard ________ applies to inverters
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||
A. E-2 || ||
B. A-27 || ||
C. A-28 || ||
D. A - 31 - ✔✔D
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A true RMS voltmeter is required to accuralty check output voltage from a(n):
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A. non-sinusoidal output inverter
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B. Isolation transformer
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C. Inverter DC input
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D. Galvanic isolator - ✔✔A
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An AC voltmeter is required at the panel if the boat is equipped with:
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A. A DC windlass
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B. An AC- powered water heater
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C. An inverter
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D. AC- powered reading lamps - ✔✔C
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All of the following could cause a conductor to overheat except.
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,A. Undersized conductor
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B. Excessive Amperage
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C. Insulation temp rating too low
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D. Corroded connector - ✔✔C
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Tech A says that AC and DC are able to run together down the same conductor. Tech
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B says that this is technically impossible which tech is correct?
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A. Tech A
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B. Tech B
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C. Both techs
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D. Neither tech - ✔✔A
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To check for charger output to the battery de-enegize charger check batter open -
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circuit voltage re-energize the charger and check for a voltage ________V DC or
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more Conductance tester
|| || ||
A. Rise of 14
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B. Drop of 0.5
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C. Drop pf 14
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D. Rise of 0.5 - ✔✔D
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The tool of choice for testing AC generator winding insulation integrity is a:
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A. TDR|| ||
B. Fox and hound
|| || || ||
,C. Megohmmeter
|| ||
D. Clamp - type ammeter - ✔✔C
|| || || || || ||
On a brushless generator a possible cause for low AC voltage output under load could
|| || || || || || || || || || || || || || ||
be: ||
A. High engin RPM
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B. Faulty exciter winding diode rectifier
|| || || || || ||
C. Faulty output circuit breaker
|| || || || ||
D. Excessively high DC voltage supply - ✔✔B
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All of the following could cause an overheated electrical connection except:
|| || || || || || || || || || ||
A. Conductor with an excessively high insulation temperature rating
|| || || || || || || || ||
B. Loose terminal connection
|| || || ||
C. Corroded connection
|| || ||
D. Undersized conductor for the load demand - ✔✔A
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When trouble shooting AC appliances and equipment for safety considerations the
|| || || || || || || || || || ||
tech should do all of the following except
|| || || || || || || ||
A. Use lock out and tag out procedures
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B. By-pass over current devices when possible
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C. De-enegrgize the circuit whenever possible
|| || || || || ||
D. Not wear jewelry - ✔✔B
|| || || || ||
, For Charging the battery, the alternator produces alternating current that must be
|| || || || || || || || || || || ||
changed to direct current by the. || || || || || ||
A. Solenoid
|| ||
B. Starter
|| ||
C. Rectifier
|| ||
D. Voltage regulator - ✔✔C
|| || || ||
On an inverter that does not provide a true sine wave output, low voltage
|| || || || || || || || || || || || || ||
troubleshoots must be accomplished using a(n) _________________ type DVOM || || || || || || || || ||
A. Analog
|| ||
B. Average responding
|| || ||
C. True RMS
|| || ||
D. Oscillating - ✔✔C
|| || ||
A tech is installing the cable run from the batteries to the main DC pannelboard on a
|| || || || || || || || || || || || || || || || ||
boat as part of a refit. The boat has a 12-volt system, and the distance from panel to
|| || || || || || || || || || || || || || || || || ||
batteries is 15ft. The max current draw from panel is calculated at 90 amps. what
|| || || || || || || || || || || || || || ||
gauge cable should you use?|| || || || ||
A. 0AWG
|| ||
B. 2AWG
|| ||
C. 4AWG
|| ||
D. 6AWG - ✔✔A
|| || ||
|| || || || || || ||
ABYC standard ________ applies to inverters
|| || || || || ||
||
A. E-2 || ||
B. A-27 || ||
C. A-28 || ||
D. A - 31 - ✔✔D
|| || || || ||
A true RMS voltmeter is required to accuralty check output voltage from a(n):
|| || || || || || || || || || || || ||
A. non-sinusoidal output inverter
|| || || ||
B. Isolation transformer
|| || ||
C. Inverter DC input
|| || || ||
D. Galvanic isolator - ✔✔A
|| || || ||
An AC voltmeter is required at the panel if the boat is equipped with:
|| || || || || || || || || || || || || ||
A. A DC windlass
|| || || ||
B. An AC- powered water heater
|| || || || || ||
C. An inverter
|| || ||
D. AC- powered reading lamps - ✔✔C
|| || || || || ||
All of the following could cause a conductor to overheat except.
|| || || || || || || || || || ||
,A. Undersized conductor
|| || ||
B. Excessive Amperage
|| || ||
C. Insulation temp rating too low
|| || || || || ||
D. Corroded connector - ✔✔C
|| || || ||
Tech A says that AC and DC are able to run together down the same conductor. Tech
|| || || || || || || || || || || || || || || || ||
B says that this is technically impossible which tech is correct?
|| || || || || || || || || || ||
A. Tech A
|| || ||
B. Tech B
|| || ||
C. Both techs
|| || ||
D. Neither tech - ✔✔A
|| || || ||
To check for charger output to the battery de-enegize charger check batter open -
|| || || || || || || || || || || || || ||
circuit voltage re-energize the charger and check for a voltage ________V DC or
|| || || || || || || || || || || || ||
more Conductance tester
|| || ||
A. Rise of 14
|| || || ||
B. Drop of 0.5
|| || || ||
C. Drop pf 14
|| || || ||
D. Rise of 0.5 - ✔✔D
|| || || || ||
The tool of choice for testing AC generator winding insulation integrity is a:
|| || || || || || || || || || || || ||
A. TDR|| ||
B. Fox and hound
|| || || ||
,C. Megohmmeter
|| ||
D. Clamp - type ammeter - ✔✔C
|| || || || || ||
On a brushless generator a possible cause for low AC voltage output under load could
|| || || || || || || || || || || || || || ||
be: ||
A. High engin RPM
|| || || ||
B. Faulty exciter winding diode rectifier
|| || || || || ||
C. Faulty output circuit breaker
|| || || || ||
D. Excessively high DC voltage supply - ✔✔B
|| || || || || || ||
All of the following could cause an overheated electrical connection except:
|| || || || || || || || || || ||
A. Conductor with an excessively high insulation temperature rating
|| || || || || || || || ||
B. Loose terminal connection
|| || || ||
C. Corroded connection
|| || ||
D. Undersized conductor for the load demand - ✔✔A
|| || || || || || || ||
When trouble shooting AC appliances and equipment for safety considerations the
|| || || || || || || || || || ||
tech should do all of the following except
|| || || || || || || ||
A. Use lock out and tag out procedures
|| || || || || || || ||
B. By-pass over current devices when possible
|| || || || || || ||
C. De-enegrgize the circuit whenever possible
|| || || || || ||
D. Not wear jewelry - ✔✔B
|| || || || ||
, For Charging the battery, the alternator produces alternating current that must be
|| || || || || || || || || || || ||
changed to direct current by the. || || || || || ||
A. Solenoid
|| ||
B. Starter
|| ||
C. Rectifier
|| ||
D. Voltage regulator - ✔✔C
|| || || ||
On an inverter that does not provide a true sine wave output, low voltage
|| || || || || || || || || || || || || ||
troubleshoots must be accomplished using a(n) _________________ type DVOM || || || || || || || || ||
A. Analog
|| ||
B. Average responding
|| || ||
C. True RMS
|| || ||
D. Oscillating - ✔✔C
|| || ||
A tech is installing the cable run from the batteries to the main DC pannelboard on a
|| || || || || || || || || || || || || || || || ||
boat as part of a refit. The boat has a 12-volt system, and the distance from panel to
|| || || || || || || || || || || || || || || || || ||
batteries is 15ft. The max current draw from panel is calculated at 90 amps. what
|| || || || || || || || || || || || || || ||
gauge cable should you use?|| || || || ||
A. 0AWG
|| ||
B. 2AWG
|| ||
C. 4AWG
|| ||
D. 6AWG - ✔✔A
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