Skip to content
DG Exit Exam
Home
Answer Key

AIGF exit exam questions and answers — Set 8

Set 8 of the Advanced Training for Ships subject to the IGF Code (AIGF) exit exam bank — 30 of 342 questions, with the correct option marked and a one-line explanation for every one. Read it end to end, jump to a single set, or search it — then sit the same bank as a timed paper. The real DG Shipping exit exam is 30 marks with 15 to pass.

These are the bank's original groupings. Practising deals the whole bank out again every time you reshuffle, so a practice “Set 3” is a different 30 questions each time — the set numbers below are the source file's, and are only used here so the key stays navigable. Options are listed in their original order with fixed letters; when you practise, those move too.

Bank last rebuilt .

Practise these AIGF questions AIGF mock exit exam, 30 marks AIGF exit exam sets and syllabus

30 of 30 shown · Set 8

Nothing in this set matches that. Try a shorter word, or search the whole key.

Set 8 — 30 AIGF exit exam questions with answers

1. Shaft generator produces electricity from the _________

  • A. None of the above
  • B. side proposion engine
  • C. main proposion engine
  • D. left engine
Answer: C — main proposion engine
A shaft generator utilizes mechanical rotational power from the main propulsion engine shaft to generate shipboard electricity, eliminating the need to run auxiliary diesel generators at sea.

2. Prime surgreen focuses towards fulfilling of all emission standards from the _____________

  • A. None of the above
  • B. Director General of Shipping
  • C. Mercantile Marine department
  • D. International Maritime Organisation
Answer: D — International Maritime Organisation
Maritime green shipping initiatives focus on meeting and exceeding IMO greenhouse gas reduction targets, EEDI/CII ratings, and Tier III emission limits.

3. Prime surgreen focuses towards fulfilling of all _________ standards from the International Maritime Organisation

  • A. depletion
  • B. emission
  • C. None of the above
  • D. omision
Answer: B — emission
Environmental regulations set by the IMO mandate continuous reductions in vessel greenhouse gas emissions, SOx, NOx, and particulate matter.

4. ________ increases efficieny and reduce emissions of main engine

  • A. propulsion shaft cleaning
  • B. turbo charger refitting
  • C. None of the above
  • D. exhaust boiler cleaning
Answer: B — turbo charger refitting
Retrofitting high-efficiency turbochargers improves scavenge air pressure and combustion efficiency, reducing specific fuel consumption and exhaust emissions.

5. Reducing fouling of engine parts can be achieved by using ___________

  • A. VTA technology
  • B. None of the above
  • C. ATV technology
  • D. Vat tehnology
Answer: A — VTA technology
Variable Turbine Area (VTA) turbochargers reduce engine carbon deposits and fouling by maintaining optimal air-to-fuel ratios during low-load operation.

6. Disadvantage of LNG fuel is

  • A. emission of CO2
  • B. emission of NOX
  • C. release of unburned methane into atmosphere
  • D. emission of sox
Answer: C — release of unburned methane into atmosphere
A primary environmental challenge of Otto-cycle gas engines is methane slip, where unburned methane escapes into the exhaust stream.

7. Burners are designed to maintain _____________ under all firing conditions.

  • A. spontaneous combustion
  • B. stable combustion
  • C. explosive combustion
  • D. unstable combustion
Answer: B — stable combustion
Gas burners on marine auxiliary boilers are engineered with specialized flame stabilizers and air registers to maintain stable combustion under all firing rates.

8. On the pipe of each gas burner a _______________ are fitted

  • A. automatically operated shut-off valve
  • B. manually operated shut-off valve
  • C. manually operated switch-on valve
  • D. automatically operated switch-on valve
Answer: B — manually operated shut-off valve
Each gas burner supply pipe must be equipped with a local manual shut-off valve in addition to automated double block and bleed safety valves.

9. The exhausts are appropriately configured to prevent any accumulation of ___________

  • A. un-burnt fuel gas
  • B. none of the above
  • C. burnt fuel gas
  • D. both (a) and (b)
Answer: A — un-burnt fuel gas
Exhaust uptakes and boiler flues on gas-fueled vessels are configured to prevent pockets or dead zones where unburned fuel gas could accumulate.

10. Pressure relief systems within the exhaust uptakes to be lead to a ______________ location away from personnel.

  • A. non-hazardous
  • B. toxic
  • C. hazardous
  • D. risky
Answer: A — non-hazardous
Pressure relief vents on boiler exhaust ducts and gas supply systems must discharge to safe non-hazardous open-air locations clear of personnel and air intakes.

11. In gas turbine may be fitted in a gas-tight enclosure a ____________ in the gas supply piping may be accepted within this enclosure

  • A. pressure above 30 bar
  • B. pressure above 10 bar
  • C. pressure above 50 bar
  • D. pressure below 10 bar
Answer: B — pressure above 10 bar
When marine gas turbines are housed in gas-tight enclosures, fuel gas piping with pressures exceeding 10 bar may be approved within the ventilated enclosure.

12. What is the full redundancy for ventilation for the enclosure for ESD protected machinery spaces ?

  • A. 2x100% capacity fans from different electrical circuits
  • B. 2x200% capacity fans from same electrical circuits
  • C. 2x100% capacity fans from same electrical circuits
  • D. 2x200% capacity fans from different electrical circuits
Answer: A — 2x100% capacity fans from different electrical circuits
Ventilation for ESD-protected machinery enclosures must feature 100% redundancy with two independent extraction fans powered from separate electrical circuits.

13. Each __________ are fitted with an automatic shutdown device for high exhaust temperatures.

  • A. pelton wheel
  • B. none of the above
  • C. both (a) and (b)
  • D. turbine
Answer: A — pelton wheel
Gas turbines and high-temperature machinery are equipped with automatic over-temperature trips to initiate emergency gas fuel shutoff if exhaust temperatures exceed safe limits.

14. Fuel cells design are to ensure that any single failure in active components of the fuel cell system not lead to ____________

  • A. loss of propulsion
  • B. loss of efficiency
  • C. loss of manoeuring
  • D. loss of brake air
Answer: A — loss of propulsion
Marine fuel cell installations must be designed with redundancy so that a single failure in any active component will not result in total loss of vessel propulsion or steering.

15. To make a fuel cell space non hazardous, all fuel pipes are enclosed in a gas tight _________

  • A. loss of propulsion
  • B. double open space
  • C. single enclosure
  • D. ring space
Answer: A — loss of propulsion
To maintain a fuel cell compartment as a gas-safe space, all fuel supply piping must be fully enclosed within gas-tight double-wall ducts or ventilated casings.

16. The fuel cell space is fitted with gas detection and an _______________ for Emergency ShutDown protected machinery spaces.

  • A. programmed shut down system
  • B. instructed shut down system
  • C. automatic shut down system
  • D. manual shut down system
Answer: C — automatic shut down system
Fuel cell compartments must be fitted with continuous gas detection systems and automated emergency shutdown (ESD) systems to isolate fuel upon leak detection.

17. For fuel cell systems with aggregate power ______________, the installation of the whole fuel cell system in the same compartment may be accepted by the Administration

  • A. lower than 375 kW
  • B. lower than 500 kW
  • C. lower than 775 kW
  • D. lower than 275 kW
Answer: A — lower than 375 kW
Small fuel cell systems with an aggregate power below 375 kW may be installed in a single compartment subject to approval by the Administration.

18. Fuel tanks located above the bulkhead deck shall be shielded with ________ insulation towards accommodation.

  • A. class A-120
  • B. class A-90
  • C. class A-60
  • D. class A-80
Answer: C — class A-60
Fuel tanks situated on open decks above the bulkhead deck must be shielded from accommodation spaces, service spaces, and control stations by A-60 class thermal insulation.

19. ______________used for refrigeration or cooling of fuel must be compatible with the fuel.

  • A. boiler
  • B. freezing
  • C. Refrigerants
  • D. Griller
Answer: C — Refrigerants
Refrigerants utilized in fuel reliquefaction and gas cooling systems must be chemically compatible with the fuel and non-reactive in the event of heat exchanger leakage.

20. Heat exchangers can be repaired on board without ___________

  • A. heat sources
  • B. external sources
  • C. power sources
  • D. internal sources
Answer: B — external sources
Plate and shell-and-tube fuel heat exchangers are arranged with isolation valves and bypasses to allow maintenance and tube cleaning on board without external assistance.

21. What is arranged to enable each fuel storage tank to be safely gasfreed and to be safely filled with fuel gas from a gas-free condition?

  • A. storage tank
  • B. Gas Combining Unit
  • C. heat exchangers
  • D. piping system
Answer: D — piping system
Dedicated piping connections must be provided to allow each fuel storage tank to be safely inerted, gas-freed with air, and re-gassed from a gas-free state.

22. Dry air only applicable for which type of tankvwhere condensation and icing due to cold surfaces is an issue?

  • A. cargo tanks
  • B. storage tanks
  • C. fuel tanks
  • D. liquid tanks
Answer: C — fuel tanks
Dry air purging is utilized to dry fuel tanks and hold spaces prior to gassing up to eliminate moisture and prevent ice formation on cryogenic surfaces.

23. The ship's motion shall include ______________

  • A. surge
  • B. heave
  • C. sway
  • D. All the above
Answer: D — All the above
Structural design of fuel tanks must account for all six degrees of ship motion: rolling, pitching, yawing, surging, swaying, and heaving.

24. What properties are adequate for the intended service to Thermal insulation and other materials used in liquefied gas fuel containment systems?

  • A. All the above
  • B. absorption of the liquefied gas fuel
  • C. solubility in the liquefied gas fuel
  • D. compatibility with the liquefied gas fuels
Answer: A — All the above
Thermal insulation materials used on cryogenic fuel containment systems must exhibit proven structural integrity, low thermal conductivity, and fire-resistant properties at service temperatures.

25. The properties for Thermal insulation the range should be how much

  • A. neutral
  • B. minimum
  • C. between temperature in service and 5°C below the minimum design temperature
  • D. zero
Answer: C — between temperature in service and 5°C below the minimum design temperature
Thermal insulation properties must be tested and certified across the temperature range between operational service conditions and 5°C below the minimum design temperature.

26. The properties for Thermal insulation and other materials including composites tested how much should be the minimum Design temperature should not be lower than__________

  • A. plus196°C
  • B. minus196°C
  • C. plus196°F
  • D. minus196°F
Answer: B — minus196°C
Materials used in cryogenic LNG fuel containment systems must be impact tested at design temperatures down to -196°C to verify ductility against brittle failure.

27. _________ refers to the usage of other power supply sources to feed power to the ship

  • A. alternate marine power system
  • B. ship marine power system
  • C. None of the above
  • D. alternate feed power system
Answer: A — alternate marine power system
Alternative Marine Power (AMP / Cold Ironing) supplies electrical power to the vessel from the shoreside grid while berthed, allowing auxiliary engines to be shut down.

28. _______ reduces the emission by the ship by a great margin

  • A. main marine power system
  • B. auxiliary marine power system
  • C. alternate marine power system
  • D. None of the above
Answer: C — alternate marine power system
Shore power connection (AMP) drastically reduces local port emissions of NOx, SOx, PM, and greenhouse gases while ships are berthed in port.

29. Alternate Marine Power provides powers to

  • A. lights
  • B. refrigerator
  • C. All of the above
  • D. air conditioner
Answer: C — All of the above
AMP supplies high-voltage electrical power to all shipboard consumers, including hotel loads, refrigeration, lighting, and auxiliary pumps.

30. Which type of vessel has got the biggest disadvantage with reference to Alternate Marine Power?

  • A. tanker
  • B. bulK carrier
  • C. passenger ships
  • D. container
Answer: A — tanker
Tankers face significant safety challenges with shore power connections due to hazardous area zoning and potential ignition risks during cargo operations.

Printing this? Use your browser's Print (Ctrl/⌘ + P) — the buttons, the search box and the site chrome drop out and the questions run on as plain text, so a set fits a few pages. Filter to one set first if you only want that set on paper.

Practise these AIGF questions as a timed paper All 342 AIGF questions and answers AIGF exit exam sets and syllabus All 27 STCW exit exam courses