COMPETENCE 4 -Operate Main and Auxiliary Machinery and – Associated Control Systems
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#1. The purpose of the low pressure cutout switch is to _______.
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#2. The thermostatic expansion valve of a refrigeration system is opened _________.
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#3. Fluctuations in the pressure and temperature of the steam supplied to the first-effect of a low pressure submerged tube distilling plant will cause ________.
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#4. Boiler fire side must be kept free of soot accumulations because ________.
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#5. The liquid indicator sight glass is generally located in the _________.
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#6. The inlet pipe connection of dirty oil in disc type centrifugal purifier is located at the________.
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#7. Which of the following descriptions best identifies the operating principle of a flash-type evaporator?
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#8. Salinity cell is installed in the distilling unit to indicate the _______.
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#9. Air compressor cylinder unloader enable the compressor to __________.
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#10. A dehydrator installed in a refrigeration system is used to remove _______.
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#11. The degree of fuel atomization in a diesel engine cylinder depends primarily on _________.
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#12. Boyle’s law can best be defined as _______.
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#13. Burned gas from each cylinder is directed to the exhaust manifold which is part of _________.
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#14. The Brayton Cycle is one where the combustion event occurs at _________.
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#15. Refrigerant is circulated through a refrigeration system by the __________.
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#16. Salinity cell is installed in the distilling unit to indicate the ________.
Incorrect!
#17. In a refrigeration system, the amount of superheat absorbed by the refrigerant is adjusted at the _______.
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#18. Breaking the fuel into fine spray to provide good combustion is called ______.
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#19. Kinetic energy is associated with ________.
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#20. If an air compressor intercooler pressure rises above normal, it usually indicates _______.
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#21. The purpose of expansion valve is to __________.
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#22. A salinity indicating system functions on the basic principle of measuring the __________.
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#23. It is a form of energy which crosses the boundary of a system during a change of state produced by a difference of temperature between the system and its surroundings.
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#24. The expansion tank for the jacket cooling water which is a closed cooling type is used to _______.
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#25. A mooring winch should be equipped with mechanical brakes capable of holding______.
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#26. In a low pressure air compressor, the loss of volumetric efficiency normally results from _______.
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#27. Main engine lube oil sump tank is located ______.
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#28. The “general energy equation” expresses energy in which of the following forms?
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#29. A squeaking sound occurring from within an operating reciprocating air compressor is an indication of ______.
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#30. Fuel oil enters the main engine cylinder through _________.
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There are 30 questions for the actual examination for Competence 4 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 9 mistakes.
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