Question 9Electricity & Electronics - QMED

The correct answer is C) slip rings and commutators. Brushless alternators are designed to operate without the use of slip rings and commutators, which are required in conventional alternators. Slip rings and commutators are mechanical components that can wear out over time, reducing the alternator's efficiency and reliability. Brushless alternators eliminate these components by using an electronic voltage regulator to control the alternator's output, making them more durable and maintenance-friendly compared to conventional alternators. The other options are incorrect because: A) Brushless alternators still require voltage regulators to control the output. B) Brushless alternators use rectifiers, just like conventional alternators, to convert the alternating current (AC) to direct current (DC). D) Brushless alternators do not use exciters, which are separate generators used to provide the initial field current in some alternator designs.