When Does a Star Experience Helium Fusion

question 138

Multiple Choice

When does a star experience helium fusion?

• A) just before it enters the main sequence
• B) after it has become a red giant star
• C) when it is on the horizontal branch
• D) before it leaves the main sequence

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Definitions:

Engine Management ECM

Engine Management Electronic Control Module, a central part of the engine management system that processes information from engine sensors to adjust fuel delivery, ignition timing, and other engine parameters for optimum performance and emissions.

Automotive

Pertaining to the design, production, and operation of motor vehicles.

Light-duty Truck Equivalent

A classification for trucks and commercial vehicles based on weight, design, and usage, typically for less demanding transportation tasks.

J1939 Data Bus

A communications network protocol used in heavy-duty vehicles, allowing electronic control units (ECUs) to communicate.