OIC – ENGINE REPUBLIC OF THE PHILIPPINES DEPARTMENT OF TRANSPORTATION MARITIME INDUSTRY AUTHORITY STCW OFFICE GUIDE QUESTIONNAIRES for seafarers The Annual Publication of Database of Questionnaires is mandated in Republic Act 10635 or the Act Establishing the Maritime Industry Authority (MARINA) as the Single Maritime Administration Responsible for the Implementation and Enforcement of the 1978 International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978, as amended and International Agreements or Covenants related thereto and its Implementing Rules and Regulations. These sample questions have been reviewed and validated by our respective Board of Examiners which may serve as a guide for the review of aspiring Marine Deck and Engineering Officers, towards the successful completion of the Theoretical Examination. The following sample questions do not reflect the actual set of database of questions given during the theoretical examination. Examinees are encouraged to study the contained sample questions and probable answers as they are intended to give an indication of the format and difficulty level of the theoretical examination. You may access these guide questionnaires with your smart gadgets anywhere and anytime at your convenience. Please consider the environment before printing. Thank you. A Publication of the MARINA STCW Office OIC - EW: COMPETENCE 3 - Use internal communication systems No. Questions Choice A Choice B Choice C Choice D A polarization of a radio wave is determined by height of the length of the position of the width of the 1 a: aerial aerial aerial aerial A radio-wave travels in the air at a speed of: 300.000 meters 300.000 300.000 per 300.000 meters per second kilometers per kilometers per per minute 2 second hour A VHF transmission range is mainly determined the moment of the right position the height of the length of the by: propagation of the squelch- aerial aerial 3 adjustment A VHF transmission range is mainly restricted the curvature of reflection by the the length of the atmospheric by: the surface of ionosphere aerial condition 4 the earth A wire aerial for an MF/HF –transmitter must be to prevent to prevent burns to make the way the battery is low suspended between isolators: contact with when touching for aerial 5 earth the aerial currents as long as possible According to the “Regulation and Restrictions” of may be taken off may only be apart from its None of the the mariphone license, the mariphone: the ship present at the position as above temporarily, only place, as indicated also if suitable indicated in the be used in other measures are license places provided taken for the its call sign is at 6 prevention of the least transmitted use of the once at the start mariphone and at the end of each transmission Acoustic feedback can arise: because the because outside because the because the loudspeaker noise is volume battery is strong works as a amplified by the adjustment of 7 microphone loudspeaker in the speaker is the microphone too high All ships with periodically unattended machinery engineer's accommodation personnel alarm All of the above plants shall, in addition to the general alarm assistance- space required by Coast Guard Regulations (46 CFR), needed alarm communication 8 be provided with a/an : system Automatic amplifier regulation is used for the in absence of with weak with varying All of the above following reasons: incoming signals incoming signals incoming signals the noise is distortion is the variation in reduced reduced the out going 9 signal is as small as possible Automatic amplifier regulation is used to: reduce noise if reduce distortion reduce distortion increase there is no of the strong of weak incoming signal signal incoming signal incoming signals 10 Before a mariphone is installed on board: a letter of contribution a license must the ship must registration must must be paid be issued pass the port 11 be applied for state control inspection By DUAL WATCH in maritime VHF- automatic the possibility to to keep a None of the communication is understood: reduction of keep radio- listening watch above transmitting contact with two on two channels 12 power or more stations more or less simultaneously simultaneously By frequency is meant: number of time lapse of number of Any of the vibrations vibrations. vibrations per above 13 unit of time By non-reduced transmitting power in VHF is 1 – 6 watt 5 – 10 watt 6 – 25 watt 25 – 50 watt 14 meant in a power between: By the degree of selectivity of a receiver is ability to make ability to ability to make ability to meant: weak stations distinguish weak strong station distinguish audible stations from audible strong stations 15 adjacent from weak stronger stations stations By wave length is understood: the distance the propagation the propagation the propagation travelled by a speed of a radio direction of a of wave signal 16 radio vibration in vibration in free radio vibration a period space Calls, announcement and conversations from Intelligibility clarity understandabilit loudness one station to another on board should be as y 17 brief as possible and consistent with ___________. Channel 70 for digital selective calling for 158.526 MHz 157.526 MHz 156.526 MHz 159.526 MHz Distress, Safety and Calling frequency operate 18 at: Due to the volume of traffic on the radio, you are Key the Broadcast Broadcast Broadcast unable to communicate with the vessel in microphone "Seelonce" "Seelonce "Charlie Quebec 19 distress. What action should you take? three times in immediately Distress" Mayday" quick succession For the connection between VHF and antenna a three vein a coax cable of a copper wire of an arbitrary coax must be used: cable with earth- proper sufficient cable 20 connection impedance diameter to minimize loses For the VHF-antenna connection is used: an arbitrary coax a 50-ohm a properly a coax cable of cable resistance coax insulated copper proper 21 cable wire of sufficient impedance diameter How should the letter "D" be pronounced when DUKE DA VID DONKEY DELL TAH 22 spoken on the radiotelephone? In daytime, as a result of sunlight, the number of increase decrease not change vanish 23 layers of ionization will: In making VHF communication or test first tap on the identify yourself with DSC use, All of the above transmission you must: mike several with your call first broadcast times, but not sign and /or the carrier wave 24 more than ten ships name for at least three times seconds In maritime communication two international Solas and its Solas and the The IMO at Both treaties are primarily involved. They are: rules international London and the international and treaty of far ITU at Geneva local rules 25 messaging In maritime radio-communication by “low power” 0.5 – 1.0 watt 1.0 – 1.5 watt O.5 watt 2.0 - 2.5 watt given by a nautical phone is meant a transmitting maximum 26 power of: In radiotelephone communications, the prefix the message the message a ship is a calling station PAN indicates: following the following is a threatened by has an urgent prefix will be meteorological grave and message about 27 about the safety warning imminent danger the safety of a of navigation and requests person assistance In radio-telex distress traffic preference is given Direct telex ARQ ISS IRS 28 to: In shore-ship use, what is useful range of VHF? About 30-70 About 40-70 About 30-70 About 50-70 miles "Line of miles "Line of miles "Line of miles "Line of 29 sight" sight" sight" sight" In subjecting a metal to an axial pull, its strength main haul breaking elasticity 30 ______can be found. strength International NAVTEX service means the 518 KHz 2182 KHz 518 MHz 500 MHz coordinated broadcast and automatic reception 31 on___________ of maritime safety information by means of narrow-band direct-printing telegraphy using the English language. Long distance communication in the HF-bands ionization layers ground wave satellites dimmer setting 32 depends on: Modulation is __________: detecting blending LF & to enhance the controlling the frequencies HF signals side bands in wave signal 33 relation to the carrier wave Moored in a harbour, transmitting with a allowed in not allowed always allowed sometimes mariphone is __________. consultation with allowed 34 the harbour- master What does MUF stand for? highest possible highest possible most effective mega/ultra high frequency that frequency that frequency , to frequency will be reflected can be made make a 35 by the with an HF- connection with ionosphere transmitter on an HF- board transmitter Of the AM-signal __________. amplitude and amplitude is both amplitude amplitude frequency of the variable and and frequency of modulation 36 carrier wave are frequency of the carrier wave constant carrier wave is are variable constant On board an accident happened. Urgent radio- routine safety urgency security medical advice is needed. We choose the 37 category __________. On which frequency are navigational and 518KHZ 2182KHz 214KHz 216KHz meteorological messages normally sent on the 38 NAVTEX system? One wishes to have a telephone conversation a personal call a collect call a direct call a private call with a person whose name is known. This is 39 what is called __________. Pledge of secrecy applies __________: for everybody only for those only to for Management who want to certificate Level officers 40 send and/or holders only receive a message Polarization of a radio wave means the direction of the beam-angle the propagation transmission of 41 __________: the electrical of a transmitting speed of the radio wave field aerial signal Radio signals in the HF channels propagate through hops between the along the in the mainly: between the earth and curvature of the ionosphere 42 ionized layers satellites earth and the earth Radio waves used in satellite communication are the frequency of a disc aerial is TDM-signals are the frequency of not affected by ionosphere because the radio waves used used the radio waves 43 _____________.