Set B Vol 2 Self Test Flashcards Preview

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Flashcards in Set B Vol 2 Self Test Deck (235)
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1

What explosive do we use as the comparison to measure explosive power?

TNT.

2

What are the economic requirements for military explosives?

Raw materials must be cheap and plentiful and the manufacturing process must be relatively cheap, simple, and safe. Raw materials must not be vital to other phases of the war effort.

3

What is brisance?

The shattering or fragmentation effect of explosives.

4

What term describes the tendency of a substance to produce vapors?

Volatility.

5

When a military explosive does not react with the metal that encases it or with another explosive, it is said to have what characteristic?

A natural compatibility.

6

What is meant by explosive toxicity?

An explosive’s poisonous characteristics.

7

What is hygroscopicity?

The moisture-absorbing property of an explosive.

8

What is the autocombustion rate of low explosives?

A few inches per minute to 1,300 feet per second.

9

What term do we use to describe the tendency of a substance to burn with a rapid and sparkling combustion?

Deflagration.

10

What condition is necessary for an explosive to detonate rather than deflagrate?

It must be confined.

11

What are the basic components of an explosive train?

Detonator, booster, and bursting charge.

12

What is a relatively small and sensitive initial component that begins the functioning of the explosive train?

Primer.

13

What are the two means by which we can activate a detonator?

By the action of a primer or by a non-explosive impulse.

14

What is the purpose of a delay?

A delay controls the timed delay in the functioning of the train.

15

What does an explosive booster do?

Detonates a main charge.

16

Of the three common explosive trains discussed here, which action—time, superquick, or delay—would cause a bomb to detonate on impact?

Superquick action.

17

Which effect of a general-purpose bomb does the most damage: blast or fragmentation?

Blast.

18

What effect causes greater penetration of the explosive charge?

Munroe effect.

19

What happens when you increase the standoff distance of an explosive?

Its penetrating capability is increased.

20

Name four weapons that use the Munroe effect.

(1) Artillery shells.
(2) Rocket warheads.
(3) Demolition charges.
(4) Antitank mines.

21

What are the four factors that control the visibility of pyrotechnics?

Candlepower, color, weather, and light.

22

What type of weather reduces the visibility range of pyrotechnics?

Moist weather, rain.

23

How do we classify pyrotechnics?

According to their purpose as illuminants, signals, combinations of signal and illuminants and simulators.

24

What are the two effects of signals?

Light and smoke

25

How can you identify pyrotechnic ammunition?

By its nomenclature, lot number, model designation, painting, marking, NSN, and DODIC.

26

How long does the AN–MK6 Mod 3 signal burn?

Approximately 40 minutes.

27

What is the candlepower rating of the AN–MK13 flare?

3,000 candlepower

28

Which day-night signal is designed to be used with only one hand?

The MK124 Mod 0.

29

How many flares does the personnel distress signal kit A/P 25S–1 contain?

Seven.

30

At what height and for how long does the A/P 25S–1 burn?

Minimum height of 300 feet for five seconds.