What is the function of an automatic voltage regulator (AVR) on a marine alternator?
Direct Answer
Option B: Maintain constant generator terminal voltage despite changes in electrical load
Automatic Voltage Regulators sense alternator terminal voltage and modulate exciter field current to maintain a stable output. As electrical loads fluctuate, the AVR instantly compensates to keep voltage within strict regulatory tolerances for safe shipboard distribution.
All Options
Detailed Explanation & Context
Automatic Voltage Regulators sense alternator terminal voltage and modulate exciter field current to maintain a stable output. As electrical loads fluctuate, the AVR instantly compensates to keep voltage within strict regulatory tolerances for safe shipboard distribution.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
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