A Cloud-To-Ground Lightning Discharge Will Sometimes Appear to Flicker

question 27

Multiple Choice

A cloud-to-ground lightning discharge will sometimes appear to flicker.This is because

• A) you are able to see the separate steps of the stepped leader.
• B) you are able to distinguish separate return strokes.
• C) the bright light causes you to blink.
• D) of refraction caused by turbulent thunderstorm winds.

Recognize the different types of circles and their characteristics.

Differentiate between true and false characteristics of drawing elements.

Comprehend the significance of repetition symbols in technical drawings.

Describe the types of lines used for different purposes in drawings.