5-13.
Magnetic, acoustic, and pressure mines are
grouped into which of the following general
classifications?
1.
Influence only
2.
Contact only
3.
Influence and contact
4.
Pressure and magnetic
5-14.
Mine cases may be made of which of the
following materials?
1.
Sheet metal only
2.
Aluminum only
3.
Spun glass only
4.
Sheet metal, aluminum, or spun glass
5-15.
The amount of explosives used in air-laid
mines ranges from 160 pounds to what
maximum number of pounds?
1.
1,300 lb
2.
1,500 lb
3.
1,700 lb
4.
1,900 lb
5-16.
Depending on the type of mine, the explosive
system may contain which of the following
components?
1.
A booster only
2.
A main charge only
3.
An initiating system only
4.
A booster, a main charge, and an initiating
system
5-17.
Air-laid mines contain which of the following
types of explosives?
1.
HBX, Comp B, H6, or TNT
2.
Comp B, TNT, RDX or tritonal
3.
Comp B, TNT, H6, or RDX
4.
TNT, H6, tritonal, or BOOM I
5-18.
In an air-laid mine, what device opens a hole in
the mine case, causing the mine to sink?
1.
A booster
2.
A main charge
3.
An initiating system
4.
An auxiliary explosive
5-19.
The arming device in an air-laid mine consist
of what type of (a) switch piston and (b)
aligning piston?
1.
(a) Electrical
(b) mechanical
2.
(a) Hydrostatic
(b) explosive
3.
(a) Electrical
(b) explosive
4.
(a) Hydrostatic
(b) mechanical
5-20.
In an air-laid mine, what component prevents
firing until the mine has been submerged for a
predetermined period of time?
1.
The hydrostatic switch piston
2.
The explosive aligning piston
3.
The clock-delay mechanism
4.
The mechanical time-delay fuze
5-21.
What time delay range can be programmed
into a clock-delay mechanism?
1.
6 min to 8 days
2.
8 min to 10 days
3.
10 min to 12 days
4.
12 min to 14 days
5-22.
What type of firing mechanism detects the
sound waves generated by nearby ships?
1.
Pressure
2.
Acoustic
3.
Magnetic
4.
Contact
5-23.
What type of firing mechanism is actuated by a
decrease in the water pressure surrounding the
mine?
1.
Pressure
2.
Acoustic
3.
Contact
4.
Depth
5-24.
What type of parachute pack is used to release
a mine from an aircraft that is flying at a high
altitude?
1.
Large
2.
Quick-release
3.
Small
4.
Delayed-opening
5-25.
When a mine is released with a parachute
installed, the parachute is deployed by what
means?
1.
The airstream
2.
The parachute release band
3.
The removal of the arming wire
4.
The firing of an explosive fitting
5-26.
A Mk 55 service mine is classified as what type
of mine?
1.
A moored mine
2.
A bottom mine
3.
A surface mine
4.
A floating mine
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