Deck 14: Lightning Protection

Question 1

The lightning stroke is attracted to the terminal because it is a part of the path that offers the to ground.

A) least impedance
B) most impedance
C) least voltage
D) most voltage

Answer 1

A

Question 2

Cloud-to-Earth lightning strokes are most likely to occur .

A) in urban areas
B) at a high point
C) in valleys
D) in rural areas

Answer 2

B

Question 3

Each atom has at its center a nucleus that is composed of protons and .

A) neutrons
B) electrons
C) neutrinos
D) muons

Answer 3

A

Question 4

Describe the grounding connections in a lightning protection system.

Question 5

The installation of lightning protection systems for structures in the open should be guided by the requirements of Master Label Service, which is endorsed by .

A) UL
B) MET
C) NSF
D) TUV

Question 6

It is estimated that, on average, the earth is struck by lightning 100 times per .

A) second
B) minute
C) hour
D) day

Question 7

Lightning is generated by the ominous-looking cloud or thundercloud.

A) cirrostratus
B) altocumulus
C) cumulonimbus
D) cirrus

Question 8

Persons struck by lightning carry .

A) a high electrical charge that remains for hours
B) a high electrical charge that remains for a few minutes
C) a low electrical charge that remains for a few minutes
D) no electrical charge

Question 9

A(n) is the potential energy a charge gains when one joule of work is done on one coulomb.

A) ohm
B) farad
C) ampere
D) volt

Question 10

If 6,250,000,000,000,000,000 electrons are transferred from Point A to Point B, the quantity of charge is referred to as a(n) _.

A) joule
B) farad
C) coulomb
D) electron-volt

Question 11

Lightning conductors should provide at least paths for current flow from an air terminal to Earth.

A) two
B) three
C) four
D) five

Question 12

A single drop of water contains about atoms.

A) 1000
B) 100,000
C) 10 million
D) 100 billion

Question 13

If you are ever present when a person is struck by lightning, immediately .

A) move them to the lowest elevation
B) begin CPR
C) call 911
D) find shelter

Question 14

When conceptualizing lightning and charge distribution, the endpoints to consider are Point B on Earth and Point A in the _.

A) troposphere
B) ionosphere
C) stratosphere
D) magnetosphere

Question 15

What guidelines should you follow when selecting and installing air terminals?

Question 16

What is an ion and how is it useful?

Question 17

Lightning protection systems have three basic components: air terminals, lightning conductors, and connections.

A) rod
B) standard
C) safety
D) grounding

Question 18

List five safety rules for human protection when lightning threatens that are recommended by United States Departm Atmospheric Administration.

Question 19

The air terminal is a solid or tubular rod made of copper, bronze, or .

A) silver
B) gold
C) aluminum
D) platinum

Question 20

How does lightning restore electrical balance?