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OIC-EW MARINA REVIEWER / QUIZ COMPETENCE 3 – PART 4

22 March, 2023
REVIEWER

COMPETENCE 3 – Use Internal Communications Systems

Results

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Next

#1. What does MUF stand for?

highest possible frequency that will be reflected by the ionosphere

highest possible frequency that will be reflected by the ionosphere

highest possible frequency that can be made with an HF- transmitter on board

highest possible frequency that can be made with an HF- transmitter on board

most effective frequency , to make a connection with an HF- transmitter

most effective frequency , to make a connection with an HF- transmitter

mega/ultra high frequency

mega/ultra high frequency

Incorrect!

Next

#2. Pledge of secrecy applies __________:

for everybody

for everybody

only for those who want to send and/or receive a message

only for those who want to send and/or receive a message

only to certificate holders

only to certificate holders

for Management Level officers only

for Management Level officers only

Incorrect!

Next

#3. On board an accident happened. Urgent radio- medical advice is needed. We choose the category ___________.

routine

routine

urgency

urgency

safety

safety

security

security

Incorrect!

Next

#4. Radio signals in the HF channels propagate mainly:

through hops between the ionized layers and the earth

through hops between the ionized layers and the earth

between the earth and satellites

between the earth and satellites

along the curvature of the earth

along the curvature of the earth

in the ionosphere

in the ionosphere

Incorrect!

Next

#5. Polarization of a radio wave means _________ :

the direction of the electrical field

the direction of the electrical field

the beam-angle of a transmitting aerial

the beam-angle of a transmitting aerial

the propagation speed of the signal

the propagation speed of the signal

transmission of radio wave

transmission of radio wave

Incorrect!

Next

#6. On which frequency are navigational and meteorological messages normally sent on the NAVTEX system?

518KHZ

518KHZ

2182KHz

2182KHz

214KHz

214KHz

216KHz

216KHz

Incorrect!

Next

#7. Modulation is ________:

detecting frequencies

detecting frequencies

blending LF & HF signals

blending LF & HF signals

to enhance the side bands in relation to the carrier wave

to enhance the side bands in relation to the carrier wave

controlling the wave signal

controlling the wave signal

Incorrect!

Next

#8. One wishes to have a telephone conversation with a person whose name is known. This is what is called .

a personal call

a personal call

a collect call

a collect call

a direct call

a direct call

a private call

a private call

Incorrect!

Next

#9. Moored in a harbour, transmitting with a mariphone is _______.

allowed in consultation with the harbour- master

allowed in consultation with the harbour- master

not allowed

not allowed

always allowed

always allowed

sometimes allowed

sometimes allowed

Incorrect!

Next

#10. Of the AM-signal _________.

amplitude and frequency of the carrier wave are constant

amplitude and frequency of the carrier wave are constant

amplitude is variable and frequency of carrier wave is constant

amplitude is variable and frequency of carrier wave is constant

both amplitude and frequency of the carrier wave are variable

both amplitude and frequency of the carrier wave are variable

amplitude modulation

amplitude modulation

Incorrect!

Finish

There are 10 questions for the actual examination for Competence 3 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 3 mistakes.

DISCLAIMER

The questionnaires contained in this “reviewer” are extracted from the post released by MARINA on their official website and other review materials. Please note that Seaman Kowts is not affiliated with, endorsed by, or connected to the official website of MARINA. The information provided on this website is for general informational and educational purposes only and should not be relied upon as official or authoritative. If you require official information or services, please visit the official website or any relevant review center. We do not assume any responsibility or liability for any consequences resulting from the use of information or services provided on this website.

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