問題一覧
1
The content of table #2 of radiotelephony procedure is _______.
Position in code from the International code of signals
2
Distess alert initiated for other than an appropriate test, by communications equipment intended for alerting, when no distress situation actually exists.
False alarm
3
In making VHF communication or test transmission you must?
with DSC use, first broadcast the carrier wave for at least three seconds.
4
On board an accident happened. Urgent radio-medical advice is needed. Which category you should choose?
safety
5
Which of the following reasons why an Acoustic amplifier regulation is used?
with varying incoming signals the variation in the out going signals is as small as possible
6
What is the content of table #3 of radiotelephony procedures?
Nature of distress in code from the International code of signals
7
How would you understand by the wave length?
independent of the frequency
8
Where should the GMDSS radio log be kept on board ship?
At the GMDSS operating position
9
The transmitting range of an HF transmitter is mainly determined by?
the height of the transmitting antenna
10
How does the polarization of a radio wave can be determine?
Position of the aerial
11
With an Inmarsat C installation there is the addressing-option "special". Via the option?
You can send a message by express delivery.
12
When the voyage is to be 48 hours or greater duration, which equipment must be tested NOT more than 12 hours prior to getting underway from a port?
Emergency generator
13
What should you do FIRST to correct a condition wherein a diesel engine is operating with excessively high temperature on all cylinders?
Reduce the engine load
14
You are approaching a port when you see three lights in a vertical line. The upper and lower are green and the middle white. What does this mean?
A vessel may proceed only when it has received specific orders to do so.
15
According to the "Regulation and Restrictions" of the mariphone license, how you define the mariphone?
apart from its position as indicated alsobe used in other places provided its call sign is at least transmitted once at the start and at the end of each transmission
16
VHF radiotelephone calling/safety/distress frequency is?
156.8 MHz (channel 16)
17
The reconnected connection between antenna and VHF is _____.
coax cable connection
18
This communication system is used for distress alert, transmission and reception of maritime safety information via enhanced group calls. This may also be used for general communications.
Satcom C
19
Which of the listed requirements regarding radiotelegraph installations do not correspond to present regulation?
The installation shall include equipment for radiotelephone communication on distress frequencies in addition to working frequencies
20
When the vessels steering wheel on the navigation bridge is turned , the difference existing between the position of the wheel and that of the rudder is known as?
the error signal
21
Which stat about the transmitting distress messages by radiotelephone is incorrect? Analyze Marine Engineers Question and Answers. Eduard Sweetman Co.
It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration.
22
You see a vessel displaying the code flag "LIMA" below which is a red ball. The vessel is?
in distress
23
By non-reduced transmitting power in VHF how many power in watt should be require?
5-10 watt
24
A polarization of a radio wave is determined by a:
Position of the aerial
25
The "squelch" adjustment in the front of a mariphone serves to?
adjust the noise threshold of the mariphone receiver
26
A polarization of a radio wave is determined by a ?
Position of the aerial
27
The VHF radiotelephone frequency for Channel 14 is?
156.7 MHz
28
Which system may be useful for messages, such as local storm warning or a shore-to-ship distress alert,for which it is inappropriate to alert all ships in the satellite coverage area?
EGC
29
Channel 70 for digital selective calling for Distress, Safety, and Calling frequency operate a ?
156.526 MHz
30
Which distress signal is required for a liferaft in ocean service and could be effectively used to attract the aftention of aircraft at night?
Red flares
31
On board an accident happened. Urgent radio-medical advice is needed. What category you should choose?
safety
32
In making VHF communication or test transmission you must tell how,when,where,and why?
with DSC use, first broadcast the carrier wave for at least three seconds.
33
Squelch mode serves to supress?
noise in speech-breaks in an SSB-signal
34
One wishes to have a telephone conversation with a person whose name is known. This is what we called a?
a personal call
35
The ship normally carries portable VHF and UHF marine radios. They are used for internal communications and small boat operations. They are called?
walkie talkies
36
How does the prefix PAN indicates in radiotelephone communications?
a calling station has an urgent message about the safety of a person
37
What is the maximum range of a VHF radio-set set from ship to ship at sea?
200 Nautical Miles
38
Calls, announcements and conversations from one station to another on board should be as brief as possible and consistent with?
intelligibility
39
Which channel and mode should be used when initiating a distress alert transmission?
Channel 70 DSC
40
What is the most effective way of detecting any malfunction of machinery during their operation?
Electric siren
41
Which visual distress signal is acceptable for daylight use only?
Hand-held orange smoke distress flare
42
Pledge of secrecy applies?
only for those who want to send and/or receive a message
43
Which one of the listed requirements regarding radiotelephone auto alarm do not correspond to present regulations?
in presence of atmospheric or interfering signals automatically adjust itself
44
In radiotelephone communications can you indicates the prefix PAN?
a calling station has an urgent message about the safety of a person
45
The VHF radiotelephone frequency for Channel 15 is?
156.75 MHZ
46
What is the content of table #1 of radiotelephony procedure?
Phonetic alphabets and figure spelling
47
All ships with periodically unattended machinery plants shall, in addition to the general alam requirements should be provided with a _______.
engine room deadman's alarm
48
Which one of the list can mainly restricted to VHF transmission range?
The curvature of the surface of the earth
49
The typical "daylight frequencies" for long distance transmission are located in the?
8 or 12 MHz-band
50
Which one of the list is required before a mariphone is installed on board?
a license must be issued
51
Automatic amplifier regulation is used to?
reduce distortion of weak incoming signals
52
On which frequency are navigational and meteorological messages normally sent on the NAVTEX system?
518KHZ
53
At what temperature in degree Celsius will safety devices called fusible plug installed in air compressor or compressed air system melts in order to prevent explosion?
100
54
The button or switch "dimmer" of a mariphone serves?
to regulate the transmitting power
55
Which of the following is the full abbreviation VDR?
voyage data recorder
56
When onboard channel 16 is used for a shore radio-communication, you always work?
simplex
57
In order to comply with GMDSS regulations, what is the minimum number of portable two way VHF walkie talkies to use in survival craft that should be carried onboard vessels?
3 sets
58
In maritime radio-communication by "low power" given by a nautical phone is meant a transmitting power. What is the maximum power of watt given?
0.5 watt maximum
59
What is the Automatic amplifier regulations?
reduce distortion of weak incoming signals
60
What is the calling in distress frequency on a single side band(SSB) marine radiotelephone?
2182 kHz
61
Who operates as marine traffic monitoring and communications systems , providing navigational information and the tracking of vessel movements within port limits?
VTS
62
Regulations require that any tankship making a voyage of over a 48 hour duration must have certain tests conducted not more than 12 hours prior to leaving port. Meeting this requirement includes testing of the?
means of communication between the bridge and engine room
63
Which of the listed requirements regarding portable radio apparatus for survival crafts do not correspond to present regulations?
Transmitter and receiver to be tested with intervals of not more than one month
64
What is the best example of a wire to be used for the connection between VHF and antenna?
a copper wire of sufficient diameter to minimize loses
65
Can you recall on the list why an Acoustic feedback can arise?
because the volume adjustment of the speaker is too high
66
Acoustic feedback can arise?
because the volume adjustment of the speaker is too high
67
For the VHF-antenna connection is used?
a properly insulated copper wire of sufficient diameter
68
Which channel has been designated for on-scene communication in GMDSS? Remember Marine Engineers Question and Answers By Eduard Sweetman Co.
16 and 2174.5
69
An incinerator is a waste disposal unit that will burn?
solid material and all types of liquid waste
70
Which of the following is correct about frequency modulation?
the frequency is constant
71
Which of the listed requirements regarding two-way radiotelephone apparatus for survival crafts do not correspond to present regulations?
The apparatus shall be capable of being operated on VHF channel 16
72
What should you include in the body of a radio message seeking advise for a medical emergency at sea?
The name and owner of the ship, its position and destination
73
The holder of ship low power radiotelephone operator's permit is authorized to operate equipment or station using?
A3 or F3 emissions
74
What does a modulation meant?
to enhance the side bands in relation to the carrier wave
75
Regulations require that any ship making a voyage of over a 48 hour duration must have certain tests conducted not more than 12 hours prior to leaving port, this requirement includes the testing of ______.
means of communication between bridge and engine room
76
You see an iceberg that has not been reported. What kind of radio message do you transmit to warn others? Apply Marine Engineers Question & Answers..Eduard Sweetman Co.
Safety message
77
What item is considered the equivalent of aircraft's black box?
VDR
78
With the use of INMARSAT and digital selective calling, distress alerts can be received?
With the NAVTEX
79
You have received a call from the watchstander in the engine room reporting that a high temperature alarm for a main bearing has just sounded. Your next instruction to the watchstander should be to?
bring the main engine speed to idle
80
What is a Polarization of a radio wave means?
the direction of the electrical field
81
Vessel with an EPIRB, you must check?
the working of the charger and check the logged condition of the battery
82
What is meant by frequency?
time lapse of vibrations
83
In maritime communication two internal treaties are primarily invoved. Identify who are they?
Solas and the international treaty of far messaging
84
Which of the following VHF marine frequencies have been set aside by the ITU for Digital Selective Calling frequency?
70
85
What is a frequency mean?
time lapse of vibrations
86
Radio waves used in satellite communication are not affected by ionosphere because?
TDM-signals are used
87
Which statement concerning GMDSS alerts is true?
Information contained in a distess alert includes the name and position of the distressed vessel, and may include additional information such as the nature of situation and what kind of assistance that may be required
88
Which of the following type/sizes of vessels in international trade do not need to be fitted with radiotelephone station?
Cargo ships below 300 tons gross
89
The wavelength of a radio-signal reflected against the F-layer may be?
1.5 m
90
By the degree of selectivity of a receiver meant?
Ability to make weak stations audible
91
Which of the following is a homing device to enable ships and SAR aircraft to accurately pinpoint a ship in distress position?
SART
92
The VHF radiotelephone frequency for Channel 13 is?
156.65 MHz
93
The VHF radiotelephone calling/safety/distress frequency is?
156.8 MHz (channel 16)
94
In shore-ship use, what is useful range of VHF?
About 30-70 miles Line of sight
95
What is the primary purpose of Digital Selective Calling(DSC)?
DSC is to be used for transmitting and receiving distress alerts to and from other ships or coast radio stations via radio.
96
Where does a long distance communication in the HF-bands depends on?
satellites
97
How should the letter "D" to be pronounced when spoken on the radiotelephone?
DELL TAH
98
The call sign of a vessel is meant to?
be able to identify oneself
99
One wishes to have a telephone conversation with a person whose name is known. This is what we called a?
a personal call
100
Where does the radio-telex in distress traffic preference is given?
ARQ