Question

1. the headlights get brighter as the engine is revved. technician a says this is caused by a high capacity battery. technician b says this is caused by a faulty voltage regulator. who is correct?

technician a
technician b
both a and b
neither a or b

Explanation:

Step1: Understand headlight - brightness principle

Headlight brightness depends on voltage.

Step2: Analyze Technician A's statement

A high - capacity battery doesn't directly cause headlight brightness to change as engine is revved.

Step3: Analyze Technician B's statement

A faulty voltage regulator can't maintain stable voltage. As engine revs up, alternator output voltage may increase without proper regulation, making headlights brighter. So Technician B is correct.

Answer:

B. Technician B