14270644
Descripción
Test por Ve'Laura Bradshaw, actualizado hace más de 1 año
|
Creado por Ve'Laura Bradshaw
hace casi 6 años
|
|
Pregunta 1
Pregunta
Underwater objects appear larger and closer
Respuesta
- True
- False
Pregunta 2
Pregunta
How much faster does sound travel and water as compared to its speed and air.
Respuesta
-
100
-
50
-
4
-
10
Pregunta 3
Pregunta
FSW to ATA. [blank_start]FSW / 33[blank_end]. [blank_start]+ 1[blank_end]
Respuesta
-
FSW / 33
-
FSW • 33
-
FSW + 14.7
-
FSW. • .445
-
+ 1
-
-1
-
none
Pregunta 4
Pregunta
What are the units of measure used in diving to express pressure
Respuesta
-
PSIG PSIA. ATA ATM FSW
-
USAF CIA FBI ATT MMA LDS
Pregunta 5
Pregunta
What concentration of oxygen is required or necessary to support life
Respuesta
-
16
-
5
Pregunta 6
Pregunta
A cubic foot of Sea water weighs 62.4 pounds
Respuesta
- True
- False
Pregunta 7
Pregunta
The most common pollutant found in air.
Respuesta
-
Carbon monoxide
-
Carbon dioxide
Pregunta 8
Pregunta
What are three Interrelated factors that affect a divers breathing gas
Respuesta
-
Temperature
-
Pressure
-
Volume
-
Defusion
-
Re-fraction
Pregunta 9
Pregunta
What are the two factors affecting the amount of pressure acting on a diver
Respuesta
-
Weight of water weight of Atmosphere
-
Weight of suit
-
Weight of the world
-
Weight of last meal
Pregunta 10
Pregunta
What three laws represent components of the general gas law
Respuesta
-
Fisk law
-
Henry’s law
-
Boyles law
-
Charles and gay Loussac’s law
Pregunta 11
Respuesta
-
correct
-
correct again
Pregunta 12
Pregunta
Boyles law defines the interrelationship of a gas at a constant temperature where is the volume inversely relates to pressure
Respuesta
- True
- False
Pregunta 13
Pregunta
Internal pressure affects the volume in Boyles law.
Respuesta
- True
- False
Pregunta 14
Pregunta
What diving related injury can be explained by Boyles law
Respuesta
-
POIS
-
PAWS
-
Squeezes
Pregunta 15
Pregunta
Any gas at a constant pressure the volume will very proportionally with the temperature as described in Henry’s law
Respuesta
- True
- False
Pregunta 16
Pregunta
What formula is used to represent Charles law
Respuesta
-
V2= V1•T2/T1
-
V1/T1 = V2/T2
-
V2/T1=V1/T2
-
V1= V2•T1/T1
Pregunta 17
Pregunta
Gay Loussac law expresses the relationship between what two properties of diving gases? Any gas at a constant volume the [blank_start]pressure[blank_end] very proportionately with the absolute [blank_start]temperature.[blank_end]
Respuesta
-
pressure
-
temperature.
Pregunta 18
Pregunta
Convert Fahrenheit to Celsius F=[blank_start]C[blank_end]• [blank_start]9[blank_end]÷[blank_start]5[blank_end]+[blank_start]32[blank_end]
Respuesta
-
32
-
5
-
9
-
C
Pregunta 19
Pregunta
What concentration of oxygen is required to support combustion
Respuesta
-
12
-
16
Pregunta 20
Respuesta
-
ATA
-
ATM
-
FSW
-
FFW
-
MSW
-
ATM
-
ATA
-
PSIG
-
PSIA
-
PSIA
-
PSIG
-
/33
-
x 33
-
x 33
-
/ 33
Pregunta 21
Pregunta
Convert Celsius to Fahrenheit. C = [blank_start]5[blank_end] ( [blank_start]F[blank_end] - [blank_start]32[blank_end] ) / [blank_start]9[blank_end]
Respuesta
-
5
-
F
-
32
-
9
Pregunta 22
Pregunta
Using Charles law what happens to a flexible balloon if we double the absolute temperature of the air inside? If the [blank_start]pressure[blank_end] is [blank_start]constant[blank_end] and [blank_start]absolute[blank_end] [blank_start]temperature[blank_end] is [blank_start]doubled[blank_end] the [blank_start]volume[blank_end] will [blank_start]doubled[blank_end].
Respuesta
-
pressure
-
constant
-
absolute
-
temperature
-
doubled
-
volume
-
doubled
Pregunta 23
Pregunta
What is the formula used to represent Gay-Lussac’s Law. P2 = P1 • [blank_start]T2[blank_end] / [blank_start]T1 [blank_end]
Respuesta
-
T2
-
T1
Pregunta 24
Pregunta
PSIG to ATA= [blank_start]PSIG. +14.7[blank_end] [blank_start]/14.7[blank_end]
Respuesta
-
/14.7
-
•14.7
-
PSIG. +14.7
-
PSIG. -14.7
Pregunta 25
Pregunta
It is easier for divers to determine the direction to a sound source under water.
Respuesta
- True
- False
Pregunta 26
Pregunta
PSIG to ATA= [blank_start]PSIG. +14.7[blank_end] [blank_start]/14.7[blank_end]
Respuesta
-
PSIG. +14.7
-
PSIG. -14.7
-
/14.7
-
•14.7
Pregunta 27
Pregunta
ATA to FSW. [blank_start]ATA -1[blank_end]. [blank_start]•33[blank_end]
Respuesta
-
ATA -1
-
ATA + 1
-
•33
-
/33
-
/14.7
Pregunta 28
Pregunta
PSIG to ATA= [blank_start]PSIG. +14.7[blank_end] [blank_start]/14.7[blank_end]
Respuesta
-
/14.7
-
•14.7
-
PSIG. +14.7
-
PSIG. -14.7
Pregunta 29
Pregunta
PSIG to ATA= [blank_start]PSIG. +14.7[blank_end] [blank_start]/14.7[blank_end]
Respuesta
-
/14.7
-
•14.7
-
PSIG. +14.7
-
PSIG. -14.7
Pregunta 30
Pregunta
PSIG to ATM PSIG. [blank_start]/14.7[blank_end]
Respuesta
-
/14.7
-
• 14.7
-
•33
Pregunta 31
Pregunta
Archimedes principle deals with the concept of
Respuesta
-
Pressure
-
Volume
-
Buoyancy
-
Temperature
Pregunta 32
Pregunta
And object will displace a amount of fluid equal to the volume of fluid required to completely fill or flood that object floatable volume.
Respuesta
- True
- False
Pregunta 33
Pregunta
MMP stands for minimum manifold pressure.
Respuesta
- True
- False
Pregunta 34
Pregunta
ATM to ATA [blank_start]+1[blank_end]
Respuesta
-
+1
-
-1
Pregunta 35
Pregunta
Applying the principles of Henry’s law what is the primary factor that directly influences how much of breathing gas components gets absorbed by the divers body tissues.
Respuesta
-
Partial pressure of an inert gas in breathing media
-
The water temperature
Pregunta 36
Pregunta
What is the formula we used for Henry’s law calculations. [blank_start]None[blank_end]
Respuesta
-
None
Pregunta 37
Pregunta
[blank_start]Red[blank_end] is the first color to be filtered out in water and [blank_start]blue[blank_end] penetrates the deepest.
Respuesta
-
Red
-
blue
Pregunta 38
Pregunta
What changes in a diverse environment will trigger a change and gases absorbed in her body tissues.
Respuesta
-
Depth and pressure
-
What they guy across the street thinks about politics and women.
-
The weather outside
-
Changes in the amount of inert gas in the breathing media
Pregunta 39
Pregunta
If a diver on the surface is breathing a mixture of 80% helium and 20% oxygen what happens to her body. Is the N2 replaced by the He she’s breathing?
Respuesta
- True
- False
Pregunta 40
Pregunta
Name two ways a diver can change her buoyancy.
Respuesta
-
Add weight
-
Add volume
-
Skip breakfast
-
Drink five sodas.
Pregunta 41
Pregunta
Boyle’s law (pressure/ volume) plays a major factor in the measurement of adequate gas and volume supplies provided from the surface to the diver
Respuesta
- True
- False
Pregunta 42
Pregunta
Defending an open circuit man type or free flow helmet or mask requires increasing pressure supplied to the umbilical to the units for proper function At depth.
Respuesta
- True
- False
Pregunta 43
Pregunta
The minimum operating pressure these regulators are sent to is called the over bottom pressure. The [blank_start]OBP[blank_end] required varies with depth.
Respuesta
-
OBP
-
EGS
-
MMP
Pregunta 44
Pregunta
An object will displace an amount of fluid equal to the volume of fluid required to completely fill ( flood) that object. Floodable volume
Respuesta
- True
- False
Pregunta 45
Pregunta
If the weight of a body is equal to that of the displaced liquid, the buoyancy is [blank_start]neutral[blank_end].
Respuesta
-
neutral
-
positive
-
negative
Pregunta 46
Pregunta
Underwater objects appear larger and closer.
Respuesta
- True
- False
Pregunta 47
Pregunta
The visual distortion that is due to the bending of light energy is known as [blank_start]refraction[blank_end].
Respuesta
-
refraction
-
Defraction
-
Hue
-
reflection
Pregunta 48
Pregunta
Sound travels [blank_start]four[blank_end] times faster in water as compared to its speed in air.
Respuesta
-
four
-
five
-
equally
Pregunta 49
Pregunta
An object will displace an amount place of fluid equal to the volume of fluid required to completely fill (flood)that object.
Respuesta
- True
- False
Pregunta 50
Pregunta
When the water temperate reaches 70 degrees Fahrenheit, the ambient temperature surrounding the diver are to cold for the body to generate enough heat to compensate.
Respuesta
- True
- False
Pregunta 51
Pregunta
At what temperature is a dry suit recommended over a wetsuit?
Respuesta
-
60
-
70
Pregunta 52
Pregunta
At what temperature it is a hot water suit recommended over a dry suit or a wetsuit?
Respuesta
-
40
-
30
Pregunta 53
Pregunta
What are the two data plate specifications that determine the usable air output of an LP compressor?
Respuesta
-
Max pressure
-
Input volume
Pregunta 54
Pregunta
The volume of breathing media in storage and the adequacy of breathing media in diving system must be able to support the following:
Respuesta
-
The pressure requirement to maintain external work load and supply structural equipment with back up system.
-
Conservative and minimal fuel requirements not to exceed more than 55 gallons of Diesel fuel for a 72 hour operation.
-
Need the consumption rate for the full duration of the plan dive including max depth bottom time decompression and designated number of divers including standby divers.
-
Air or gas flow and pressure requirements for the designated equipment during heavy and emergency flow requirements no cubic feet per minute and psi and calculations.
Pregunta 55
Pregunta
Boyles law applies most directly to the discussion of a divers air supply requirements.
Respuesta
- True
- False
Pregunta 56
Pregunta
What is the unit used to express the output of an LP air compressor.
Respuesta
-
ACFM
-
SCFM
-
MMP
Pregunta 57
Pregunta
What does the number 18 represent on a data plate as an LP air compressor which reads 18 CFM @ 100 PSIG?
Respuesta
-
Volume and take that passes through the inlet
-
Gallons of fuel required
Pregunta 58
Pregunta
In any LP diving system the compressor is always the component that determines how much breathing media it is possible to deliver to the diver
Respuesta
- True
- False
Pregunta 59
Pregunta
As a diver descendants will the SCF required to support him to go up or down.
Respuesta
-
Down
-
Up
Pregunta 60
Pregunta
What is the SCFM requirement for a driver to work at 99FSW using a helmet that requires 1.480 CFM of air.
Respuesta
-
6×4.5×2 = 54
-
4×1.4×1 = 5.6
Pregunta 61
Pregunta
How much air in SCFM does a compressor have to provide to support diving operations for two diapers working in 165FSW assume that the equipment being used is free flow hats .
Respuesta
-
6×4.5×2 = 54
-
4×1.4×1 = 5.6
Pregunta 62
Pregunta
How many SCF of air will a diver use in 21 minutes wearing a super light 17 in demand mode and working and 132 feet of seawater?
Respuesta
-
SCF equals ATAx ACFMx Nx T= 5×1.4×1×21 = 147 SCF
-
SCF equals ATAx ACFMx Nx T=. 6×4.5×2 = 54
Pregunta 63
Pregunta
Name two connections that each diver umbilical will have in amanifold box.
Respuesta
-
Communication box, pnneumofathometer, main and secondary air.
-
EGS, regulator, bailout bottle.
Pregunta 64
Pregunta
What is the minimum number of connections in a manifold console rack box for air supply air coming into the box from sources like compressors or banks.
Respuesta
-
Two- primary and backup
-
One main intake
-
Main back up and power line
Pregunta 65
Pregunta
Does MMP change if you increase the number of divers supplied from a manifold box.
Respuesta
-
Yes, Each diver pulls pressure from the system while using up the volume.
-
No, The more the number of divers the more volume is needed not pressure.
Pregunta 66
Pregunta
What is the formula for computing stowage/ total volume of air in a storage bank
Respuesta
-
PSI +14.7÷14.7x V x N
-
psi-MMP/14.7 x V x N
Pregunta 67
Pregunta
What is the formula for computing the available volume of air in a flask cylinder.
Respuesta
-
Psi+ 14.7/14.4xVxN
-
PSI- MMP/14.7xVxN
Pregunta 68
Pregunta
When computing available volume of air in a flask we do not use absolute pressure.
Respuesta
- True
- False
Pregunta 69
Pregunta
When computing stowage and total volume of air in a flask cylinder we do not use absolute pressure’s.
Respuesta
- True
- False
Pregunta 70
Pregunta
Of the following components of air are we most concerned with when discussing decompression?
Respuesta
-
N2
-
CO2
-
CO
Pregunta 71
Pregunta
What is the rate of a sent from the bottom to the first in water decompression stop?
Respuesta
-
30ft/min
-
40ft/min
-
10ft/min
Pregunta 72
Pregunta
What two factors govern inert gas absorption and the selection of a decompression schedule.
Respuesta
-
Bottom time and depth
-
Weight and sobriety
-
Age and gender
Pregunta 73
Pregunta
What is the maximum descent rate?
Respuesta
-
75ft/min
-
55ft/min
-
65ft/min
Pregunta 74
Pregunta
Define bottom time.
Respuesta
-
The time you spent on the bottom.
-
The time you leave the surface to the time you start to leave for the surface.
-
The time you leave the bottom till the time you reach the surface.
Pregunta 75
Pregunta
Decompression schedules are in 5/10 foot increments and 5/10 minute bottom time increments.
Respuesta
- True
- False
Pregunta 76
Pregunta
Air decompression tables combine three modes of decompression into one table: decompression on [blank_start]air[blank_end] and water decompression on [blank_start]air[blank_end] and [blank_start]oxygen[blank_end] and surface decompression on [blank_start]oxygen[blank_end].
Respuesta
-
air
-
air
-
oxygen
-
oxygen
Pregunta 77
Pregunta
What is the rate of ascent from the bottom to the first in water decompression stop?
Respuesta
-
20ft/min
-
30ft/min
-
45ft/min
Pregunta 78
Pregunta
Using the air decompression tables when does a divers time at a stop begin.
Respuesta
-
You reach and leave your first stop only you leave all other stops and the start time starts when you leave.
-
When the total time elapses from when the driver left the surface to when they left bottom.
Pregunta 79
Pregunta
When you’re keeping record of a dive when does bottom time BT begin?
Respuesta
-
When the driver leaves the bottom
-
When the driver leaves the surface.
-
When the diver leaves their first decompression stop.
Pregunta 80
Pregunta
When does bottom time (BT) end.
Respuesta
-
When the diver leaves the surface.
-
When the diver leaves their first decompression stop.
-
When the diver leaves bottom.
Pregunta 81
Pregunta
Deepest depth of dive is defined as the deepest depth the diver obtained.
Respuesta
- True
- False
Pregunta 82
Pregunta
What is meant by the term maximum depth ?
Respuesta
-
Deepest depth of dive plus Pneumo correction factor.
-
Gas consumption calculations beyond 4.5 ACFM.
Pregunta 83
Pregunta
Total DECO time.
Respuesta
-
TDT
-
TTD
-
DDT
Pregunta 84
Pregunta
Left surface
Respuesta
-
LS
-
LB
Pregunta 85
Pregunta
TBT
Respuesta
-
Total time dive
-
Total deco time
-
Total bottom time
Pregunta 86
Pregunta
RNT
Respuesta
-
Residual nitrogen time
-
Reached bottom time
-
Reach surface time
Pregunta 87
Pregunta
What does the term surface interval?
Respuesta
-
The time between two dives. Think RNT designator.
-
The time corresponding between two different diverse
-
The depth difference between the two divers.
Pregunta 88
Pregunta
As the diver decisions and salt water how does this affect the nitrogen and her body?
Respuesta
-
Her equilibrium.
-
Her heart rate.
-
Her on gassing.
Pregunta 89
Pregunta
[blank_start]30 ft./m[blank_end] is the rate of ascent from the bottom to the first in water decompression stop.
Respuesta
-
30 ft./m
-
40 ft./m
-
25 ft./m
Pregunta 90
Pregunta
Using the air decompression tables when does a diverse time at stop and.
Respuesta
-
When the Diver leaves the bottom heading towards the decompression stop
-
When the diver actually leaves the decompression stop
-
The time between the first decompression stop to the surface.
Pregunta 91
Pregunta
What is the deepest depth and maximum time for air decompression?
Respuesta
-
500/10
-
300/25
-
250/30
Pregunta 92
Pregunta
30 ft./m using the decompression tables is the rate of travel between stops.
Respuesta
- True
- False
Pregunta 93
Pregunta
A repetitive dive is any dive I’ve conducted less than 10 minutes (SI). This is where the diver still has residual nitrogen in her tissue from the prior dive.
Respuesta
- True
- False
Pregunta 94
Pregunta
.The time given at the intersection of the RNT timetable (new designation) for repetitive air dives is the RN (residual nitrogen) time/number that needs to be added to the repet dive time on the no-deco dive table along with the new planned time.
Respuesta
- True
- False
Pregunta 95
Respuesta
-
G
-
K
Pregunta 96
Pregunta
G Repet designation for 60 FSW with a SI of 3:31, what is the new Repet designation and time to be added?
Image:
Mobile upload (image/jpeg)
Respuesta
-
C:19
Pregunta 97
Pregunta
There is concern of fire/combustion when divers are breathing oxygen at an increased partial pressure in Deco Chambers.
Respuesta
- True
- False
Pregunta 98
Pregunta
Decompression time for a no decompression dive can be defined as left bottom to reach surface.
Respuesta
- True
- False
Pregunta 99
Pregunta
Maximum descent rate in the water column is 75 ft./m
Respuesta
- True
- False
Pregunta 100
Pregunta
Maximum ascent rate in the water column is 30ft/m which is actually between 40 ft/m and 20 ft/m.
Respuesta
- True
- False
Pregunta 101
Pregunta
What is the rate of ascent from the bottom to the first in water decompression stop?
Respuesta
-
40
-
30
-
50
Pregunta 102
Pregunta
Using the air decompression tables when does a diverse time at the first in water stop begin.
Respuesta
-
You reach and leave your first stop.
-
You leave all other stops and the start time starts when you leave.
-
When you reach the surface.
Pregunta 103
Pregunta
Using the air decompression tables when does a diverse time at other in water stops begin.
Respuesta
-
That time when the diver actually leaves the stop
-
When the diver reach surface.
Pregunta 104
Pregunta
The max depth and Max time for air decompression is 300/25
Respuesta
- True
- False
Pregunta 105
Pregunta
Using the air decompression tables what is the rate of travel between stops.
Respuesta
-
30 ft./m
-
20 ft./m
-
100 ft./m
Pregunta 106
Pregunta
In the air decompression tables travel time between stops is included in any of the decompression stop time.
Respuesta
- True
- False
Pregunta 107
Pregunta
Using and water air decompression how long does it take from leaving the last stop in the water to reach the surface.
Respuesta
-
40 seconds, at least record it as one minute.
-
15 seconds
-
Two minutes
Pregunta 108
Pregunta
Decompression stops on oxygen commence at what depths?
Respuesta
-
30 and 20 FSW
-
Bottom to midway
Pregunta 109
Pregunta
What is the maximum time is to take to travel Shift to O2 and ventilate all divers?
Respuesta
-
Three minutes
-
Two minutes
-
Five minutes
Pregunta 110
Pregunta
30 minutes to breathe 02 with a five minute air brake max is the amount of minutes a diver can continuously breath 02 without an air break at the 30 and 20 FSW stops.
Respuesta
- True
- False
Pregunta 111
Pregunta
Airbrakes count towards the required decompression time.
Respuesta
-
No
-
Yes
Pregunta 112
Pregunta
Is an air break required if the total oxygen stop time is 35 minutes or less?
Respuesta
-
No an air brake is not required at the 30 minute mark
-
Yes an air brake is required at the 30 minute mark
Pregunta 113
Pregunta
Is an air Brake required at the 30 minute mark if the final 02 period is 35 or less?
Respuesta
-
No
-
Yes
Pregunta 114
Pregunta
After completion of the O2 time the driver is serviced breathing [blank_start]02[blank_end].
Respuesta
-
02
Pregunta 115
Pregunta
And water decompression on air and oxygen is strongly recommended whenever the total decompression time in air exceeds [blank_start]15[blank_end] minutes and service decompression on oxygen is not a viable alternative.
Respuesta
-
15
-
20
Pregunta 116
Pregunta
Oxygen toxicity is a concern when a diaper is breathing oxygen at an increased partial pressure
Respuesta
- True
- False
Pregunta 117
Pregunta
If a water stop is required during a cent what is the rate of travel from the bottom to that water stop.
Respuesta
-
30 FSW/min
-
20 FSW/ min
Pregunta 118
Pregunta
If you use surface decompression and no and water stops are required what is the rate of travel from the bottom to the surface.
Respuesta
-
LB two RS at 40 feet of seawater at 30 feet of seawater per. minute
-
100 feet of seawater per minute.
Pregunta 119
Pregunta
What is the maximum time it can take for the divergent go from the surface of the water RS to50 feet in the chamber. [blank_start]Four[blank_end] minutes
Respuesta
-
Four
-
five
-
six
Pregunta 120
Pregunta
Utilizing surface decompression were there also in water stops it should take a diver one minute to travel from the last water stop to reach the surface.
Respuesta
- True
- False
Pregunta 121
Pregunta
It should take a diver four minutes to get undressed into the chamber decompressed to 50 feet in the chamber and ready to go on O2 assuming the driver has completed all in water stops and has traveled from the last water stop to the surface in the prescribed amount of time.
Respuesta
- True
- False
Pregunta 122
Pregunta
Utilizing surface decompression where there are in water stops what is the total I’m allowed time for the driver to go from the last water step stop at 50 feet in the chamber and ready to go on O2.
Respuesta
-
Five minutes
-
Three minutes
Pregunta 123
Pregunta
100 ft./m is the maximum rate of travel from the surface to 50 feet of seawater for surface decompression to the chamber.
Respuesta
- True
- False
Pregunta 124
Pregunta
When does oxygen time at 50 FSW in the chamber begin and what is the minimum amount of time the diver will breath O2 at 50 at FSW?
Respuesta
-
When the driver is on 02. 15 minutes on 02 at 50 feet of seawater 15 minutes on 02 at40 feet of seawater.
-
When the diver reaches the surface
Pregunta 125
Pregunta
30 minutes for surface decompression is the maximum amount of time for a divers O2 breathing period.
Respuesta
- True
- False
Pregunta 126
Pregunta
In surface decompression, air brakes are included in the required decompression time .
Respuesta
- True
- False
Pregunta 127
Pregunta
After a diver completes his required a two-time what is the rate of travel from 50 40 and 30 feet in the chamber to the surface. [blank_start]30[blank_end].
Respuesta
-
30
-
40
Pregunta 128
Pregunta
A dive within a SI of >:10 is a repetitive dive.
Respuesta
- True
- False
Pregunta 129
Pregunta
If a diver has an SI of less than 10 minutes what is the RNT to be equal to?
Respuesta
-
A continuation of the dive it is the same dive
-
Total bottom time
-
total decompression time
Pregunta 130
Pregunta
What are the four pieces of information you need to determine a divers RNT on a repetitive dive.
Respuesta
-
Repair group from last dive
-
Time the diver reached bottom on last dive
-
Return to service from previous dive
-
Left service of previous dive
-
Left surface for current dive
-
Depth of last dive
-
Depth of current dive
Pregunta 131
Pregunta
Is it possible for a diver to have an RNT that is greater than the total bottom time of her previous dive?
Respuesta
-
No
-
Yes you won’t counted on the dive log
Pregunta 132
Pregunta
Speaker question and then give your answer
Respuesta
- True
- False
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